| Entries |
| Document | Title | Date |
|---|
| 20080230164 | Pneumatic Tire - A pneumatic tire in which a tread surface is provided with a main groove extending as a straight shape in a tire circumferential direction, and a block row formed by arranging a plurality of blocks facing to the main groove in the tire circumferential direction, the block row has a plurality of first blocks in which a wall surface facing to the main groove is chamfered, and a plurality of second blocks arranged between the first blocks and in which a position in a tire width direction of an edge portion of a wall surface facing to the main groove is differentiated from the first block. | 09-25-2008 |
| 20080251175 | SIPE BLADE AND TIRE MOLDED USING THE SAME - A sipe blade for forming a sipe with one end opened and the other end closed in a land portion on a tread surface of a tire includes a front-end portion that forms the closed end of the sipe and a connection-end portion that forms the open end of the sipe being connected to a rib that forms a groove. A first thickness of the front-end portion is larger than a second thickness of a thinnest portion. A third thickness of the connection-end portion is 3 mm or less and is the largest thickness in a portion between the front-end portion and the connection-end portion, and the ratio of the third thickness with respect to the second thickness; i.e., the third thickness/the second thickness is 1.2 to 3.0. | 10-16-2008 |
| 20080271826 | Pnuematic tire - A pneumatic tire has a ground contacting tread. The tread is located between a pair of opposing tire shoulders. The tire shoulders have circumferentially spaced sets of raised ribs. Each set of raised ribs has two to ten ribs, each rib extending in the radial direction relative to the center of rotation of the tire. | 11-06-2008 |
| 20080289737 | AGRICULTURAL VEHICLE TIRE - This invention provides a tire for agricultural vehicles that employs a tread design having a flattened contact surface across the width and a plurality of curved lugs that alternately extend from each sidewall to a location nearly adjacent to the opposing side wall. Each lug curves so that a central section at the center of the tire width is located on the surface ahead on the circumference of adjoining sections of the lug that extend toward each of the opposing sidewalls. In this manner, each lug appears to have a curved “banana” shape that extends across the width of the tire contact surface in a generally axial alignment. The grooves between lugs extend generally axially across the width, as a result. They are narrowed, having a circumferential width that is between approximately 20% and 30% of the average circumferential width of a lug. This geometry places more lug surface in contact with the road for better handling and longer tread life and provides less groove space to retain mud and detritus. This geometry also causes more accumulated mud and detritus to be squeezed from, and ejected out of, the tire prior to the transition onto hard road from soft ground, thereby reducing undesirable tracking on the road surface. | 11-27-2008 |
| 20080302457 | TREAD BLOCKS HAVING REDUCED EDGE STIFFNESS - A tire comprising a circumferential tread including at least one tread block having at least one edge. The tread block includes at least one void provided therein not more than about 4 millimeters from the edge of the tread block. Exemplary voids include sipes, such as one-end open sipes, two-end open sipes, and internal sipes, and cutouts, such as internal cut-outs and edge cut-outs. | 12-11-2008 |
| 20090038723 | Tread Having a Tread Pattern With Incisions - A tire tread includes at lest one longitudinal rib limited by grooves. Each rib includes a plurality of incisions each opening into the grooves. Each incision has at least three parts at least two at least of these parts being of essentially transverse orientation and opening into the grooves. At least one other part is oriented essentially in the longitudinal direction. All parts of the incision of essentially longitudinal orientation are devoid any structure for blocking relative movement between the opposing faces of the incision. The parts of essentially transverse orientation include structure for limiting the amplitude of the relative movements of these faces at least in the direction of the thickness of the tread. | 02-12-2009 |
| 20090050248 | PNEUMATIC TIRE - A sipe formed in a block of a tread surface is provided with a first sipe portion having a first wide portion, a second sipe portion having a second wide portion in a different side from the first wide portion in a sipe width direction and positioned close to a sipe bottom portion side of the first sipe portion so as to become wider than the first sipe portion, and a third sipe portion having a third wide portion in the same side as the first wide portion in the sipe width direction and positioned close to a sipe bottom portion side of the second sipe portion so as to become wider than the second sipe portion. | 02-26-2009 |
| 20090065116 | Tire for Carrier Vehicle - A radial tire for a handling vehicle, comprising a tread in which the thickness in the radial direction in the circumferential mid-plane is greater than 40 mm. The tire comprises at least three circumferential grooves, at least the central circumferential groove having an axial width L of less than 15 mm and a radial depth H which are such that the ratio of axial width L to radial depth H is between 0.1 and 0.3. | 03-12-2009 |
| 20090078350 | PNEUMATIC TIRE - A pneumatic tire structured such that a sipe is formed in a land portion of a tread surface. The sipe has a wide portion extending along a longitudinal direction at least at one position in a depth direction. The wide portion is structured by alternately arranging concave portions which are smaller in the longitudinal direction and the depth direction than the sipe, in both sides of a sipe wall surface along the longitudinal direction of the sipe. | 03-26-2009 |
| 20090101259 | Pneumatic Tire - Disclosed is a pneumatic tire including a plurality of land portions and a plurality of fine grooves. The plurality of land portions are formed of blocks and a rib, and are defined in a tread part of the pneumatic tire. The fine grooves with a depth of 0.1 mm to 0.8 mm, a width of 0.1 mm to 0.8 mm and a pitch of 0.5 mm to 2.0 mm are formed in the tread surface of each of the land portions to be inclined at an angle of 42° to relative to the circumferential direction of the tire. The inclined directions of the fine grooves relative to the circumferential direction of the tire are reverse to each other on the left and right sides of the equator of the tire. | 04-23-2009 |
| 20090101260 | PNEUMATIC TIRE - Provided is a pneumatic tire which is capable of securing a driving stability on dry road surfaces and concurrently of improving snow performance without worsening its pattern noise. The pneumatic tire includes four main grooves each extending in its tread part in a tire circumferential direction, and the four main grooves partition the tread part into: a center land part; paired intermediate land parts located with the center land part being interposed in between; and paired shoulder land parts located with the center land part and the paired intermediate land parts being interposed in between. Each of the intermediate land parts and the shoulder land parts includes multiple V-shaped grooves each configured of: a thick groove part extending in a tire width direction; and a thin groove part extending in the tire circumferential direction. The V-shaped grooves are arranged in a way that each paired V-shaped grooves are opposed to each other in the tire circumferential direction with a connecting groove part being interposed between vertices of the respective paired V-shaped grooves. Each thick groove part communicates with the main grooves or the outside of a ground contacting area. Each thin groove part terminates within the land part. | 04-23-2009 |
| 20090107601 | Tire tread having three different sipe types - A pneumatic tire ( | 04-30-2009 |
| 20090114323 | PNEUMATIC TIRE - Disclosed is a pneumatic tire including a straight main groove and two wave-shaped main grooves arranged in the center area of a tread, and diagonal grooves arranged in each shoulder area ranging from each wave-shaped main groove to the outer side of the tire, and extending obliquely outward from the wave-shaped main groove to a direction reverse to the tire rotational direction, the rotational direction being specified for the tire. Each diagonal groove is formed to have a convex protruding toward the outer side of the tire, and the extending end portion of the diagonal groove terminates in the shoulder area. Thus, each shoulder area is provided with a non-block pattern in which a land section continues in the tire circumferential direction. Thereby, the pneumatic tire has increased driving stability and uneven wear resistance while substantially maintaining good drainage performance and noise performance against columnar resonance. | 05-07-2009 |
| 20090133792 | Tire with decoupling groove for truck/bus - Disclosed is a truck/bus tire that has an improved decoupling groove capable of suppressing unbalanced wear of a shoulder rib and preventing side chipping of a tread, and that has enhanced durability of a belt. The tire has a decoupling groove formed between an outermost rib and a tread lateral side. An offset structure is provided by cutting off a portion around a start point where a virtual line extending from a distal end of the outermost rib of the tread intersects a virtual line extending from the tread lateral side. A side of the outermost rib is parallel to the tread lateral side and the cut-off portion is formed with a “<”-shaped groove. A sacrifice rib protruding from the “<”-shaped groove is formed coplanar with the start point located on the virtual line extending from the tread lateral side. | 05-28-2009 |
| 20090159167 | PNEUMATIC TIRE TREAD WITH SIPES AND MOLD BLADE - The invention provides a tire tread, the tread having at least one circumferentially extending or laterally extending main groove, the maximum radial depth of the at least one main groove defining a non-skid tread depth, the at least one main groove partially forming at least one tread element, the at least one tread element having a sipe therein, wherein the sipe has a first portion and a second radiused portion, and a transition section located between the first portion and the second portion, the transition section having a curved surface with an outer radius that has a center external to the sipe, wherein the ratio of r | 06-25-2009 |
| 20090165908 | PNEUMATIC TIRE - A pneumatic tire is provided which has sufficient total properties and mass productivity of a tire without reducing drainage capability due to narrowed circumferential grooves, achieves high design flexibility of tread patterns and stiffness of land portion as intended, and also effectively reduces undesired air column resonance noise produced by the circumferential grooves. The pneumatic tire includes a circumferential groove | 07-02-2009 |
| 20090165909 | PNEUMATIC TIRE - In a pneumatic tire provided on a groove surface with at least one main groove continuously extending in the circumferential direction of the tire, the air column resonance noise is effectively reduced without reducing the volume of the main groove, and the design flexibility is enhanced in consideration of the entire property of the tire. A pneumatic tire of the present invention is provided on a tread surface | 07-02-2009 |
| 20090165910 | PNEUMATIC TIRE - A pneumatic tire maintaining excellent traction performance for the entire life of the tire. The tire ( | 07-02-2009 |
| 20090211678 | NON-PNEUMATIC TIRE HAVING ANGLED TREAD GROOVE WALL - A non-pneumatic tire comprising side cavities that are staggered with respect to laterally opposing side cavities, and laterally extending tread grooves that are either in substantial radial alignment with the cavities or substantially offset relative to the cavities. The tread grooves have at least one wall that is angled with respect to the radial direction, i.e., the direction relative to the tire's axis of rotation. The wall may be an open angle having an angle of 5° to 65° relative to the radial direction. Also provided are processes for making such tires and to off-the-road (OTR) vehicles employing such tires. | 08-27-2009 |
| 20090218019 | Mark with Improved Visibility and Marketing Method | 09-03-2009 |
| 20090218020 | TREAD SIPE COMPRISING LOCKING PARTS - A tire tread comprising a plurality of sipes ( | 09-03-2009 |
| 20090236021 | PNEUMATIC TIRE AND METHOD OF DESIGNING TREAD PATTERN OF THE TIRE - A pneumatic tire reduces the columnar resonance noise of the tire while controlling the lowering of wet performances, wherein four circumferential grooves continuously extending in the circumferential direction of the tire are disposed in a treading face and a plurality of lateral grooves each having one end opened to the circumferential groove and terminated in a land portion are formed with respect to two circumferential grooves among the four circumferential grooves, and these lateral grooves and the respective circumferential grooves have such a groove width that both groove walls of the groove do not contact with each other in a ground contact face and one or more lateral groove are always completely included in the ground contact face, and an extending length of a portion of each lateral groove in the ground contact face having a groove width of the lateral groove corresponding to not less than 30% of a groove width of the circumferential groove is made not less than 40% of an extending length of the circumferential groove in the ground contact face. | 09-24-2009 |
| 20090266458 | PNEUMATIC TIRE - On a pneumatic tire provided with a lug-grooved rib | 10-29-2009 |
| 20090272474 | PNEUMATIC TIRE - A pneumatic tire sufficiently enhances the frequency dispersion effect for the columnar resonance noise due to the presence of the circumferential grooves, per se, or the lowering effect for the sound pressure level, in association with the cross-sectional area of the lateral grooves. The tire has a tread surface provided with a plurality of circumferential grooves ( | 11-05-2009 |
| 20090277550 | PNEUMATIC TIRE - A pneumatic tire | 11-12-2009 |
| 20090283188 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion; a plurality of main grooves extending in a tire circumferential direction on the tread portion; at least four ribs sectioned by the main grooves on the tread portion; a plurality of open sipes, each formed across both edge portions of the rib, the open sipes being formed on each of the ribs; and a plurality of multisipes, each formed on one of the edge portions of the rib. The multisipes are formed on only each of the ribs between which an outer main groove is positioned, and are aligned along the edge portion of the rib. The outer main groove is a main groove in an outermost position in a tire width direction out of the main grooves. | 11-19-2009 |
| 20090283189 | SNOW TIRE - The present invention discloses a snow tire for improving steering performance and braking performance while running on a general road surface. The snow tire of the present invention comprises a plurality of tread blocks | 11-19-2009 |
| 20090301620 | Tyre - A tyre, wherein the tread has a number of raised blocks divided into a number of elements by sipes crosswise to a motion direction of the tyre; wherein each element has at least a first lateral surface separated by a sipe from a second lateral surface of an adjacent element and having at least one first portion sloping with respect to the motion direction and facing a second portion of the second surface; and wherein parting of the first and second portion in the motion direction is controlled by an elastic locking device for locking the two portions to each other. | 12-10-2009 |
| 20090301621 | PNEUMATIC TIRE - Provided is a pneumatic tire capable of providing improved lateral sliding resistance on show, improved traction on snow, and improved uneven-wear resistance. The provided tire includes: at least one circumferential main groove formed in a tread portion and extending in the tire-circumferential direction; and plural columns of land areas defined in the tread portion by the circumferential main groove. Plural lug grooves and plural sipes are formed in at least one of the plural land-area columns. Each of the lug grooves extends in the tire-width direction. At least one end of each lug groove is formed as a dead end located in the corresponding land area. Each of the sipes extends so as to surround the corresponding lug groove. Each sipe intersects with the lug groove in question, and is communicatively connected to the corresponding single one of the circumferential main grooves at the two ends of the sipe. | 12-10-2009 |
| 20090308515 | MOTORCYCLE TIRE - A motorcycle tire comprises a tread portion having a tread face curved along a radially outwardly convex arc in the cross section of the tire including the rotational axis of the tire. The tread face is provided in the ground contacting region during straight running with three parallel circumferential grooves which are: a wide circumferential groove having a width Wg | 12-17-2009 |
| 20100006197 | Tire For Construction Vehicle - A construction vehicle tire, in which a temperature rise at the tread portion is suppressed by enhancing the heat radiation property at the tire center portion (C). Lug grooves ( | 01-14-2010 |
| 20100018619 | Pneumatic Tire - A pneumatic tire has a tread surface is provided with a groove portion, and a land portion sectioned by the groove portion. In wall surfaces facing the groove portion in the land portion, an inside wall surface facing an inner side at a time of being installed to a vehicle is formed by a zigzag surface, and an outside wall surface facing an outer side at a time of being installed to the vehicle is formed by a flat surface. | 01-28-2010 |
| 20100051154 | PNEUMATIC TIRE - Provided is a pneumatic tire which achieves both of excellent wet traction and wear resistance from an early stage to an advanced stage of wear. Multiple dent parts are formed, at certain intervals in a tire circumferential direction, in both side walls of each of at least two land portions of multiple land portions being formed in a tread surface and extending in the tire circumferential direction. Each of the dent parts has a smaller depth than main grooves that define the land portion where this dent part is formed. Multiple sipes are formed to traverse the land portion in a tire width direction between the right and left dent parts opposed to each other. Each of the sipes has a greater depth in both end regions opening to the dent parts than in a center region thereof. | 03-04-2010 |
| 20100078105 | PNEUMATIC TIRE - There is provided a pneumatic tire capable of improving on-snow performance on a snowy road surface including a sherbet-like snowy road surface without deteriorating on-ice performance. | 04-01-2010 |
| 20100084061 | PNEUMATIC RADIAL TIRE - A pneumatic radial tire in which a plurality of land portion rows | 04-08-2010 |
| 20100084062 | Pneumatic Tire - An object of the present invention is to provide a pneumatic tire capable of ensuring both of the ice braking performance and the ice turning performance while increasing the dry steering stability performance. To achieve the above object, a sipe extending in a width direction of the tire is formed a land portion, the sipe having: pluralities of wide portions each having an inclined plane that begins from the tread surface of a road surface, and terminates in the half way of a sipe wall while inclining so that a sipe width decreases toward the groove bottom of the sipe, and a pair of side faces connecting the inclined plane and the sipe wall therebetween, wherein the pluralities of wide portions are located alternately on both sipe walls along a longitudinal direction of the sipe. | 04-08-2010 |
| 20100116393 | Pneumatic Tire - A pneumatic tire has a tread pattern including a plurality of main grooves extending along a tire circumferential direction, and a shoulder land portion constructed by a rib or a block row formed in an outer side in a tire width direction of the main groove positioned in an outermost side. A circumferential sipe is provided in each of the shoulder land portions in both sides in the tire width direction. The number of the circumferential sipes provided in the shoulder land portion in a vehicle inner side is larger than the number of the circumferential sipes provided in the shoulder land portion in a vehicle outer side. | 05-13-2010 |
| 20100122760 | Pneumatic Tire - A pneumatic tire has a rib sectionalized by main grooves extending along a tire circumferential direction in a center portion of a tread surface. Depressions are arranged in series in a center portion in a width direction of the rib so as to leave a space in the tire circumferential direction. The depressions extend in the tire circumferential direction and become wider from both end portions in a longitudinal direction toward a center portion. | 05-20-2010 |
| 20100139826 | PNEUMATIC TIRE WITH ASYMMETRIC TREAD PATTERN - A tire having an asymmetric tread pattern that land proportion of outer side area | 06-10-2010 |
| 20100154951 | PNEUMATIC TIRE - A plurality of ribs ( | 06-24-2010 |
| 20100154952 | PNEUMATIC TIRE WITH SIPES - A pneumatic tire whose steering stability on dry roads is improved with minimizing lowering of on-snow performances and which has round shoulders and comprises tread portion | 06-24-2010 |
| 20100180997 | TIRE - An object the present invention is to provide a tire, in which wear resistance has been enhanced by optimizing the shape and location of block land portions. The tire has plural rows | 07-22-2010 |
| 20100186860 | TREAD FOR A RADIAL MEDIUM TRUCK TIRE - A pneumatic tire includes a casing and a tread. A set of first sipes of a first rib extend both axially and circumferentially from a first groove toward an edge of the tread. A set of second sipes of a second rib extend both axially and circumferentially from both the first groove toward a centerline of the tread and from a second groove toward an edge of the tread. A set of third sipes of a third rib extends both axially and circumferentially from both the second groove toward the centerline of the tread and from a third groove toward the centerline of the tread. A set of fourth sipes of a fourth rib extends both axially and circumferentially from both the third groove toward an edge of the tread and from a fourth groove toward the centerline of the tread. A set of fifth sipes of a fifth rib extends both axially and circumferentially from the fourth groove toward an edge of the tread. | 07-29-2010 |
| 20100193096 | PNEUMATIC TIRE - Provided is a pneumatic tire having further improved ice performance achieved by narrow grooves. The pneumatic tire of the present invention is provided, in a tread, with land sections formed by partitioning the tread by grooves, and each of the land sections is provide with narrow grooves in a ground contact surface of the land section. The angle of tilt of the narrow grooves relative to the tire's circumferential direction is set to be larger in end regions located at both sides of a center region in a tire's lateral direction in each of the land sections than in the center region. | 08-05-2010 |
| 20100206446 | PNEUMATIC TIRE - Provided is a pneumatic tire having snow performances which are capable of being enhanced without sacrificing its running performance on dry road surfaces. A pneumatic tire of the invention includes two first main grooves, a plurality lateral grooves and a plurality of sipes in a tread part. In the pneumatic tire, a groove wall surface, of each first main groove, closer to a tire equatorial line is formed so as to cyclically repeat, in the tire circumferential direction, a change in an inclination angle of the groove wall surface to a direction normal to a tread, the change being a gradual increase from a minimum value of 0° to 15° to a maximum value of 15° to 45°. In places where the inclination angel of the groove wall surface, of the first main groove, closer to the tire equatorial line, is at its maximum, no lateral grooves communicate with the first main groove, and in the places, the other groove wall surface, of the first main groove, closer to a corresponding contact end extends uninterruptedly. | 08-19-2010 |
| 20100212793 | Pneumatic Tire - A pneumatic tire has a main groove extending along a tire circumferential direction in a tread surface. A plurality of projections having different heights are provided in a groove bottom of the main groove in such a manner that an outer peripheral surface is inclined so as to repeat trough portions depressed to an inner side in a tire diametrical direction and peak portions protruding to an outer side in the tire diametrical direction along the tire circumferential direction. | 08-26-2010 |
| 20100212794 | PNEUMATIC RADIAL TIRE - The present invention provides a pneumatic radial tire which is, by effectively suppressing collapse-deformation of a relatively large magnitude in sectioned portions of each block, which sections are demarcated by sipes, and also effectively preventing the sipe from making narrowing-deformation, excellent in not only driving performance and braking performance on an icy or snowy road but also driving stability on a general road. The tire characteristically includes: a tread having a contact surface | 08-26-2010 |
| 20100212795 | PNEUMATIC TIRE - A pneumatic tire having on-snow performance improved by increasing traction performance on snow-covered road with maintaining dry grip performance high, and comprising tread surface | 08-26-2010 |
| 20100218867 | PNEUMATIC TIRE - The present invention has an object to provide a pneumatic tire having a sipe, which can increase ice braking performance without reducing anti-wear performance. The pneumatic tire includes: a plurality of land portions | 09-02-2010 |
| 20100218868 | PNEUMATIC TIRE - Provided is a pneumatic tire characterized by that a tread surface roughness (Ra 75) after running 3000 km on a paved road which is measured based on JIS B0601 is 10 to 100 μm and that a whole sipe length per 1 cm | 09-02-2010 |
| 20100224296 | PNEUMATIC TIRE - There is provided a pneumatic tire sufficiently improving drainage performance, driving stability, uneven wear resistance and quiet performance. A pneumatic tire | 09-09-2010 |
| 20100236681 | TIRE HAVING TREAD BLOCKS WITH BLENDED WALLS - A pneumatic tire includes a carcass having an axis of rotation and a tread disposed radially outward of the carcass. The tread includes a plurality of grooves and a plurality of tread blocks located between the grooves. Each of the tread blocks has a road-contacting surface and at least one wall extending from the road-contacting surface so as to border at least one of the grooves. The wall has a faceted radially outer edge blending radially inward to a linear base of the tread block. The base of the tread block transitions to a base surface of the corresponding groove to define an axially extending and concave transition surface therebetween. | 09-23-2010 |
| 20100243119 | Pneumatic Tire - A pneumatic tire has a sipe is formed in a land portion of a tread surface. The sipe has a wide region in which a sipe width is made larger than a tread at position which is at a distance from the tread. The wide region is constructed by alternately providing a concave groove extending in a depth direction of the sipe in both sides of a sipe wall surface along a longitudinal direction of the sipe. | 09-30-2010 |
| 20100252158 | PNEUMATIC TIRE - Outer longitudinal grooves extend in the circumferential direction of a pneumatic tire in a zigzag fashion. A plurality of first transverse grooves situated at an outer portion of a tread portion extend toward one side in a circumferential direction of the tire and is connected to the outer longitudinal grooves, as it gradually extends from an outer side of a width direction of the tire to an inner side thereof. A plurality of second transverse grooves situated at an inner portion of the tread portion extends toward the one side in the circumferential direction of the tire and is connected to outer longitudinal grooves, as it gradually extends from the inner side of the width direction of the tire to the outer side thereof. A position in the circumferential direction of the tire at which the plurality of first grooves are each situated in the outer portion and a position in the circumferential direction of the tire at which the plurality of second transverse grooves is each situated in the inner portion coincide with each other. | 10-07-2010 |
| 20100263776 | Pneumatic Tire - A pneumatic tire comprises main grooves | 10-21-2010 |
| 20100288410 | PNEUMATIC TIRE AND METHOD OF MANUFACTURING THE SAME - A pneumatic tire provided with run-flat reinforcing layers | 11-18-2010 |
| 20100294409 | PNEUMATIC TYRE - A pneumatic tyre for a car having a tread, including a central portion disposed astride an equatorial plane and two shoulder portions. The central portion is separated from the tread shoulder portions by two circumferential grooves and at least one circumferential row, included between a first and a second circumferential groove, is present in the central portion. The tread has a hollow/solid ratio lower than 0.28. The circumferential row comprises transverse grooves extending over at least 80% of the width of the circumferential row. Each transverse groove includes a median line having at least one first rectilinear stretch and one curvilinear stretch. The transverse grooves have a smaller width than that of the circumferential grooves. | 11-25-2010 |
| 20100307650 | TREAD FOR TIRE INCLUDING GUM BLOCKS WITH NOTCHES - Tread for a tire provided with a running surface intended to come into contact with the roadway when running, this tread comprising a plurality of blocks of mean axis XX′ intersecting the running surface of the tread, each block, including a side wall that makes a full circuit of the block about the axis XX′. This side wall intersects the running surface at an edge with a closed geometric outline, this edge delimiting a contact surface via which the block makes contact with the roadway. The side wall of the block and the opposite wall delimit an incision, the blocks being provided on their lateral surface with at least one notch having a depth measured perpendicular to the lateral surface of the block and a width measured parallel to the lateral face of the block, the at least one notch at least partially making a circuit of the block about the axis XX′, that is to say at least over 180 degrees. | 12-09-2010 |
| 20100314013 | Pneumatic Tire - The object of the present invention is to provide a pneumatic tire which reduces the partial wear while maintaining the durability in the shoulder land portion. In order to achieve the above object, the thin groove extending in the circumferential direction of the tire on the shoulder land portion is arranged so as to be perpendicular to or inclined outward to the groove bottom from the tread surface as viewed in the cross-section of the meridian direction of the tire, and the buttress groove is arranged to position at the inner side than the groove bottom of the thin groove with respect to a normal line of the tread surface as viewed in the radial direction of the tire, at the same time, at the outer side than the inner surface of the tire as viewed in the radial direction of the tire. | 12-16-2010 |
| 20110000594 | Pneumatic Tire - A pneumatic tire is provided with a main groove extending along a tire circumferential direction, and a land portion comparted by the main groove in a tread surface. A reinforcing member having a cord which is inclined at an angle between 75 and 90 degrees with respect to the tire circumferential direction is buried in the vicinity of a groove bottom height of the main groove in an inner region of the land portion. | 01-06-2011 |
| 20110005651 | PNEUMATIC TIRE - The present invention provides a pneumatic tire in which the tread pattern is optimized to improve wear resistance. The pneumatic tire has a tread portion embedding belt layer therein, wherein the tread portion has plural rows of lag grooves extending from the tread end to a tire equatorial plane and a narrow groove connecting the end of two lag grooves clipping the tire equatorial plane, wherein the narrow groove will be closed when contacting the road surface, wherein said lag groove is composed of a first lag groove portion located on the outer side in the tire widthwise direction and a second lag groove portion located on the inner side in the tire widthwise direction, wherein the maximum depth of the second lag groove portion is larger than the maximum depth of the first lag groove portion, wherein the second lag groove portion, in a sectional view in the tire circumferential direction, is composed of a shallow groove portion and deep groove portion having a larger depth than the shallow groove portion notching a part of the shallow groove portion, wherein the length in the tire circumferential direction of the deep groove portion is smaller than the length in the tire circumferential direction of the shallow groove portion. | 01-13-2011 |
| 20110005652 | PNEUMATIC TIRE - A pneumatic tire has a tread pattern designed to provide improved heat dissipation properties, wear resistance, and uneven wear resistance. The tire has arranged in a tread ( | 01-13-2011 |
| 20110005653 | PNEUMATIC TIRE - A pneumatic tire is configured such that: paired first main grooves extending in a tire circumferential direction are provided on the two sides of a tire equator line in a tread portion, respectively; a distance between a center position of each first main groove and the tire equator line is set at 8% to 20% of a ground contact width W; a first land portion is defined between these first main grooves; multiple sub-grooves each having a curved shape are formed in each of both edge portions of the first land portion at intervals in the tire circumferential direction; one end of each sub-groove is opened to the corresponding first main groove, and the other end of the sub-groove is terminated inside the first land portion; a rib portion continuously extending in the tire circumferential direction is formed in an area of the first land portion on the tire equator line; and a relation between a length (L) of a center line of each sub-groove and a pitch length (P) of the sub-grooves in the tire circumferential direction satisfies 1.1×P≦L≦2.0×P. | 01-13-2011 |
| 20110017373 | Anti-Slip Tread Pattern for Shoes - An exemplary tread configuration having improved slip-resistance includes a tread element having a length and a width. The tread element also includes a long longitudinal groove extending a substantial length of the tread element and a long latitudinal groove extending a substantial width of the tread element. Additionally, the tread element includes at least two short longitudinal grooves extending a fraction of the length of the tread element and aligned substantially parallel to the long longitudinal groove. At least one of the at least two short longitudinal grooves is located each side of the long longitudinal groove. The tread element further includes at least two short latitudinal grooves extending a fraction of the width of the of the tread element and aligned substantially parallel to the long latitudinal groove. At least one of the at least two short latitudinal grooves is located on each side of the long latitudinal groove. | 01-27-2011 |
| 20110017374 | Device for Tread - Tire comprising a tread having a tread surface ( | 01-27-2011 |
| 20110041973 | PNEUMATIC TIRE - A pneumatic tire ( | 02-24-2011 |
| 20110048601 | PNEUMATIC TIRE HAVING DIRECTIONAL TREAD PATTERN - The present invention provides a pneumatic tire which can obtain a high wet drainage performance, roadholding ability, and wear-resistant property without sacrificing other capabilities A directional pattern is formed by a circumferential wide major groove, a first narrow circumferential minor groove, a second narrow circumferential minor groove, a first transverse groove, a second transverse groove, and a third transverse groove. The circumferential wide major groove is provided in a center region in a tire width direction of a tread. The first narrow circumferential minor groove is arranged on the outside in a tire axis direction of the circumferential wide major groove. The second narrow circumferential minor groove is arranged on the outside in the tire axis direction of the first narrow circumferential minor groove. The first transverse groove is extended from a tread end and coupled to the circumferential wide major groove. The second transverse groove is arranged between the first transverse grooves, and the second transverse groove is extended from the tread end and terminated while not coupled to the circumferential wide major groove. The third transverse groove is arranged between the first transverse groove and the second transverse groove, and the third transverse groove is extended from the tread end and terminated between the first narrow circumferential minor groove and the second narrow circumferential minor groove. | 03-03-2011 |
| 20110048602 | PNEUMATIC TIRE - It is a problem to provide a pneumatic tire where disengagement between sipe wall surfaces is suppressed. | 03-03-2011 |
| 20110067794 | PNEUMATIC TIRE - A pneumatic tire is described having a designated rotational direction, wherein drainage grooves in a tread portion are positioned on each side of a tire equatorial line extending at an angle in a direction opposite the rotational direction while curving towards an outside in the tire width direction. An inclination angle θ | 03-24-2011 |
| 20110073230 | PNEUMATIC TIRE - A pneumatic tire having a designated rotational direction is disclosed, wherein an entire area having a width 85% of a total tire width and a center area having a width 30% of the total tire width are defined in a tread portion. A center main groove is positioned on a tire equatorial line and extends in a tire circumferential direction. Subsidiary main grooves are positioned on two sides of the center main groove and extend in the tire circumferential direction. Angled and lateral grooves extend at an angle, in a direction opposite the rotational direction towards an outside in the tire width direction. Lateral grooves extend from each subsidiary main groove. Sub grooves extend from the lateral grooves towards the rotational direction. A total length of a block edge in the center area is from 40% to 60% of a total length of a block edge in the entire area. | 03-31-2011 |
| 20110094640 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion provided with: an inside circumferential groove ( | 04-28-2011 |
| 20110094641 | TIRE WITH LAMELLE IN BRIDGE - A tire is provided having features in the tread elements that provide improved resistance to wear and, more particularly, irregular wear. More specifically, lamellae are provided along tread elements of the tire and between such tread elements to provide for improved wear patterns and particularly to provide resistance to irregular wear at the leading and trailing edges of the tread element. | 04-28-2011 |
| 20110100518 | MOTORCYCLE TYRE - A motorcycle tyre includes a tread band divided into a central zone and two shoulder zones. The central zone extends symmetrically on either side of the equatorial plane of the tyre over a width less than or equal to 60% of the lateral extension of the tread band and has in the central zone at least one first module repeatedly duplicated in a direction of circumferential extension of the tyre including: at least two longitudinal grooves inclined relative to the equatorial plane; and at least two substantially transverse grooves intersecting the two longitudinal grooves so as to define at least one block. The central zone further has a solids/voids ratio greater than the solids/voids ratio of the shoulder portions. The tread pattern has at least one circumferentially continuous rib situated in an axially outer portion of the shoulder portions. | 05-05-2011 |
| 20110100519 | PNEUMATIC TIRE - Provided is a pneumatic tire whose braking performance on ice and partial-wear resistance can be improved. Sipes | 05-05-2011 |
| 20110100520 | TIRE - An object of the present invention is to provide a tire possessing improved partial wear resistance by optimizing shapes and dimensions of a block land portion and its position and arrangement. The tire has plural block land portion arrays | 05-05-2011 |
| 20110108175 | RAIN TYRE - A tyre includes a tread band provided with a tread pattern including a first and a second portion of tread pattern, repeated just the same along the circumferential extent of the tyre, forming respectively a short pitch module and a long pitch module of the tread pattern, wherein the modules include a respective first transverse groove in which, starting from an axially outer first end thereof toward an opposed axially inner second end thereof, an initial section and a section of enlarged cross-section are formed, the latter being blind, at least on its axially inner side, when in the footprint area. The initial section and the section of enlarged cross-section have, respectively, a first width and a second width, and the ratio between the second width and the first width of a first transverse groove belonging to a short pitch module is greater than the ratio between the second width and the first width of a first transverse groove belonging to a long pitch module. | 05-12-2011 |
| 20110108176 | TIRE - An object the present invention is to provide a tire having a rib-like land portion and sipes provided therein, in which wear resistance has been enhanced by optimizing the shape of the sipes, while good fraction performance on a wet road surface is maintained. The tire has, in a tread portion, at least one row of rib-like land portion and sipes provided in the rib-like land portion. Further, depth of each sipe at least at one end portion thereof on the shoulder side is smaller than depth of the sipe at the remaining portions thereof. | 05-12-2011 |
| 20110114236 | SUSPENSION SYSTEM FOR VEHICLE AND TIRE FOR VEHICLE - Road-going assembly consisting of a vehicle comprising a front axle and a rear axle, and of a set of tires which are mounted on their mounting rim in order to be fitted to the front axle and the rear axle of this vehicle, the tires of the rear axle having grooves the mean depths of which are at least equal to 3 mm and at most equal to 5 mm, the tires of the front axle having grooves the mean depths of which are greater than 5 mm, this road-going assembly having, at least in the case of the rear axle, static setups (camber, toe-in) of close to zero, that is to say a camber of each wheel-tire assembly on the said axle of between −0.8 degrees and +0.8 degrees and a toe-in at each wheel of between −0.15 degrees and +0.15 degrees, the static setups of the tires of one and the same axle being equal in terms of absolute value and symmetric with respect to a plane perpendicular to the road surface. | 05-19-2011 |
| 20110114237 | PNEUMATIC TIRE - A pneumatic tire with further improved tire performance on snow and ice. A center block row | 05-19-2011 |
| 20110120607 | Tire Tread for Civil Engineering Machine - A tire tread for civil engineering works vehicle, this tread having a tread surface ( | 05-26-2011 |
| 20110120608 | STUDLESS TIRE - Provided is a studless tire capable of achieving both the traction performance and the steering stability at the time of traveling on the ice and snow at a high level. | 05-26-2011 |
| 20110120609 | PNEUMATIC TIRE - A tire with sufficient braking performance on dry and wet roads, reduced rolling resistance and abrasion resistance. Tread | 05-26-2011 |
| 20110126951 | PNEUMATIC TIRE - An object of the present invention is to provide a pneumatic tire which prevents not only partial wear but also clack generation in land portion of tread surface. In order to achieve the object, the land portion is formed with a first type sipe having a step portion extending in a width direction of the tire on one sipe wall surface and a second type sipe having a step portion extending in the width direction of the tire on a sipe wall surface facing in the opposite direction of the first type sipe as viewed in the circumferential direction of the tire. | 06-02-2011 |
| 20110132509 | MOTORCYCLE TIRE - A motorcycle tire comprises a tread portion having a tread width between tread edges. The tread portion is provided with a crown oblique groove disposed within a center region of the tread portion is defined as having 30% of the tread width. The center region having a radius of curvature of from 0.60 to 0.75 times the tread width in a meridian section of the tire, and the center region has a land ratio in a range of from 0.75 to 0.95. The crown oblique groove extends continuously or discontinuously in the tire circumferential direction, across the tire equator a plurality of times, and the crown oblique groove is inclined at angles of not more than 20 degrees with respect to the tire circumferential direction. | 06-09-2011 |
| 20110139324 | TIRE - An object of the present invention is to provide a tire possessing improved wear resistance by optimizing configurations of block land portions. The tire is configured such that, in at least two adjacent block land portion arrays | 06-16-2011 |
| 20110146862 | LOW NOISE TIRE - This invention is a tire having a first shoulder tread and a second shoulder tread and at least one intermediate tread positioned between the first shoulder tread and the second shoulder tread such that the treads extend around the circumference of the tire and form grooves that extend around the circumference of the tire, the treads comprising reinforcing fibers aligned substantially parallel to each other and oriented in a manner to decrease tire tread noise. | 06-23-2011 |
| 20110146863 | PNEUMATIC TIRE - In a present invention, in a pneumatic tire | 06-23-2011 |
| 20110146864 | TIRE TREAD HAVING BALANCED STIFFNESS - A tire includes a first rib having a first circumferential shear stiffness, wherein the first rib has a first plurality of lugs. Each of the first plurality of lugs has a first length. The tire further includes a second rib having a second circumferential shear stiffness substantially equal to the first circumferential shear stiffness. The second rib has a second plurality of lugs, each of the second plurality of lugs having a second length different from the first length. Additionally, the first rib has a different number of lugs from the second rib. | 06-23-2011 |
| 20110162769 | MOTORCYCLE TYRE - A motorcycle tyre includes: a tread band with a tread pattern including, in a zone symmetrically arranged on either side of the equatorial plane, a first module repeatedly duplicated in a direction of circumferential extension of the lyre. The module has at least two first longitudinal grooves inclined in an oppositely arranged manner relative to the equatorial plane; and at least two substantially transverse grooves designed to intersect the two longitudinal grooves so as to define at least one block. The zone has a width in the axial direction of between 20% and 65% of the width of the tread band and a solids/voids ratio equal to at least 0.20. The tread pattern also has at least one substantially transverse continuous portion which extends over the entire width of the tread band delimiting at least one end of the module in the circumferential direction. | 07-07-2011 |
| 20110162770 | PNEUMATIC TIRE - A pneumatic tire simultaneously achieving both enhanced on-ice performance and enhanced durability. A pneumatic tire, wherein sipes ( | 07-07-2011 |
| 20110168310 | Tire for Driving on Ice | 07-14-2011 |
| 20110168311 | VARIABLE SURFACE AREA TIRE TREAD AND TIRE - Particular embodiments of the present invention include a multi-stage tire tread having a plurality of wear layers, each said layer being located at a different depth of the tire tread, the tread including one or more tread elements including a contact surface and having a first wear layer and a second wear layer, wherein the second wear layer is located below the first wear layer. The tire tread also includes a longitudinal groove extending in a longitudinal direction within the second wear layer of the tread element, wherein said longitudinal groove becomes exposed after a depth of the first wear layer has been worn. The tire tread further includes one or more lateral grooves extending from the longitudinal groove in a lateral direction within the second wear layer of the tread element. The invention also provides a mold element for forming portions of the multi-stage tread. | 07-14-2011 |
| 20110180189 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion; three or more circumferential direction grooves; width direction grooves; and lines of land portions. When a tread center area and tread shoulder areas are sectioned at centerlines of the circumferential direction grooves in outermost sides in the tire width direction, a ratio G=(A+B)/X of a sum A+B of a groove area A of the circumferential direction grooves and a groove area B of the width direction grooves to a contact area X of the tread portion is in a range of G≦0.25, a ratio S=B/(A+B) of the groove area B to the sum A+B is in a range of 0.25| 07-28-2011 | |
| 20110180190 | PNEUMATIC TIRE - A pneumatic tire having a tread portion including land portions formed by vertical grooves provided in a tire circumferential direction and lateral grooves provided so as to intersect with the vertical grooves, the lateral grooves being disposed in the tire circumferential direction having a plurality of pitches P | 07-28-2011 |
| 20110180191 | UNDULATED PROGRESSIVE TIRE MOLD ELEMENT - Particular embodiments of the present invention include an undulating sipe mold member ( | 07-28-2011 |
| 20110186199 | Pneumatic Tire - An object of the present invention is to provide a pneumatic tire that increases the on-ice performance while ensuring the on-dry road performance and the anti-abrasion performance without loosing advantages of radial sipes. In order to achieve the object, a pneumatic tire comprises a tread surface including a block formed with a plurality of radial sipes disposed radially, each of the radial sipes extends radially from a central area of the block and terminating in an edge area of the block, and the width of the sipes in the edge area of the block is larger than the width of the sipes in the central area of the block. | 08-04-2011 |
| 20110192513 | HEAVY DUTY TIRE - A heavy duty tire comprises a tread portion provided with four or five circumferential grooves so as to axially divide the tread portion into five or six rib portions. The five or six rib portions are a pair of shoulder rib portions each provided with shoulder lateral groove, and three or four crown rib portions each provided with crown lateral grooves. The crown lateral grooves extend across the entire width of the crown rib portion. The shoulder lateral grooves extend axially outwardly from an axially inner edge of the shoulder rib portion so as to terminate at an axial distance of from 78 to 88% of the axial width of the shoulder rib portion from the above-mentioned axially inner edge. The depth of the circumferential grooves is 15 to 20 mm. The depth of the crown lateral grooves is 9 to 30% of the depth of the circumferential grooves. The depth of the shoulder lateral grooves is 9 to 25% of the depth of the circumferential grooves. The tread width TW is in a range of 0.78 to 0.87 times the cross sectional width SW of the tire. | 08-11-2011 |
| 20110192514 | PNEUMATIC TIRE - Disclosed is a pneumatic tire capable of improving traction performance, braking performance, and cornering performance on snow. | 08-11-2011 |
| 20110192515 | TYRE FOR VEHICLES, IN PARTICULAR MOTOR VEHICLES | 08-11-2011 |
| 20110198006 | Pneumatic Tire - In a pneumatic tire having a tread rubber which is provided with a plurality of main grooves extending along a tire circumferential direction, and a land portion comparted by the main grooves, a belt layer which is embedded in the tread rubber, and a belt reinforcing layer which is arranged in an outer periphery of the belt layer, the belt reinforcing layer has a reinforcement laminated portion constructed by at least three layers in an inner region of the land portion, and the reinforcement laminated portion is structured such that a depth from a tread surface to an outermost layer is smaller than a groove depth of the main groove, and the outermost layer covers a side of an end portion of a layer positioned in an inner periphery thereof. | 08-18-2011 |
| 20110220257 | TIRE INCLUDING CONCAVE RECESSES IN A CIRCUMFERENTIAL TREAD - A tire having an equatorial plane and a circumferential tread is provided. The tread includes at least one recess defined by at least one concave surface having a plurality of sipes formed therein. Optionally, the at least one concave surface can include one or more channel disposed therein. | 09-15-2011 |
| 20110220258 | Pneumatic Tire - A pneumatic tire has a tread that is provided with a plurality of blocks comparted in a tire circumferential direction by a lateral groove. A sipe formed in each of the blocks has a narrow portion that is open in a tread surface, and a wide portion that is communicated with an inner side in a tire diametrical direction of the narrow portion and is widened than the narrow portion. The wide portion gradually increases a widening length in one side in a width direction and gradually decreases a widening length in other side in the width direction, from one end portion of the sipe toward other end portion, and accompanies an angle change at a time of appearing on the tread surface due to a progress of a wear. | 09-15-2011 |
| 20110220259 | PNEUMATIC TIRE - A pneumatic tire has a plurality of circumferential main grooves extending in a tire circumferential direction and a plurality of ribs partitioned by the circumferential main grooves in a tread portion. When viewing a cross-section from a tire meridian direction a contact patch of the center ribs is formed from a smooth curved line forming a convex on an outer side in a tire radial direction and a contact patch of the shoulder rib is formed from a smooth curved line forming a convex on an inner side in the tire radial direction. The curved line of the center ribs and the curved line of the shoulder rib have a point of intersection. A distance between an extended line of the curved line of the center ribs and the curved line of the shoulder rib increases from the point of intersection towards an outer side in a tire width direction. | 09-15-2011 |
| 20110220260 | PNEUMATIC TIRE - There is provided a pneumatic tire to improve on-ice braking performance. A pneumatic tire comprises plural blocks on a tread surface of the tire defined by plural circumferential grooves extending in a tread circumferential direction and plural lateral grooves extending in a tread width direction and provided with plural sipes extending in the tread width direction, wherein each of the blocks is divided into plural block pieces including at least a set of a first block piece and a second block piece which are arranged next to each other, the first block piece has a width in the tread circumferential direction gradually decreasing from end portions toward a central portion of the block in the tread width direction, the second block piece has a width in the tread circumferential direction gradually increasing from end portions toward a central portion of the block in the tread width direction, the width of the first block piece in the tread circumferential direction gradually decreases toward the tread surface, and the width of the second block piece in the tread circumferential direction gradually increases toward the tread surface. | 09-15-2011 |
| 20110226397 | HEAVY DUTY TIRE - A heavy duty tire comprises a tread portion provided with tread blocks each provided in the ground contact surface thereof with a single zigzag sipe. A ratio A/B of a block length (A) which is the circumferential length of the block measured along a straight line passing through the centroid of the ground contact surface to a maximum block width (B) which is the axial distance between the axial extreme ends of the ground contact surface is 0.8 to 1.7. The zigzag sipe is disposed within a central region which is defined as extending from the centroid of the ground contact surface towards each side in the tire circumferential direction by 25% of the block length (A). The zigzag sipe is composed of a pair of major straight segments extending axially inwardly from both sides of in the tire axial direction of the block, and a minor straight segment extending between the inner ends of the respective major straight segments, so that the circumferential distance between the circumferential extreme ends of the sipe is in a range of from 10 to 35% of the block length (A). | 09-22-2011 |
| 20110232814 | TIRE - Provided is a tire exhibiting both improved partial wear resistance and improved quietness. The tire has block land portion arrays | 09-29-2011 |
| 20110232815 | TIRE - Provided is a tire exhibiting improved wear resistance, partial wear resistance, and traction performance on the wet road surface. The tire has block land portion arrays | 09-29-2011 |
| 20110247739 | TIRE - A tire, wherein, a lateral groove ( | 10-13-2011 |
| 20110253276 | TYRE FOR MOTOR VEHICLES - A tyre for motor vehicles, in particular for rear wheels of motor vehicles, has a tread band including an annular central portion, two first annular side portions and two second annular side portions, each arranged between the annular central portion and a respective first annular side portion and being narrower than the first annular side portion. The tread band has at least one module replicated along a circumferential direction of the tyre and includes grooves inclined with respect to the equatorial plane, at least two first grooves, each extending from a second annular side portion to a first annular side portion; at least two second grooves spaced from the first grooves in the circumferential direction, each extending only on a respective second annular side portion and at least two third grooves arranged along the circumferential direction on the opposite side to the first grooves with respect to the second grooves, each of said third grooves extending from a second annular side portion to a first annular side portion. | 10-20-2011 |
| 20110259493 | Sound Supressing Device for a Tire Tread - Tire having a tread comprising at least two grooves of generally circumferential orientation, a plurality of transverse grooves ( | 10-27-2011 |
| 20110265926 | TIRE TREAD FOR PREVENTING IRREGULAR WEAR - Tires in use wear in a host of ways. One negative manner in which tires, especially truck tires, may wear is in an irregular fashion. When this phenomenon happens, the tread of the tire may become unusable, forcing the user to replace the tire, which is undesirable. This invention poses a new and useful way of preventing irregular wear, increasing the useful life of the tire tread, by placing simple sipes in the center region of the tread and complex sipes in the shoulder regions of the tread. | 11-03-2011 |
| 20110277894 | PNEUMATIC TIRE - A pneumatic tire has a first wall surface faces one side of a circumferential groove, and a second wall surface faces another side of that. The first wall surface alternately has a first inclined surface portion and a first concave portion. The second wall surface alternately has a second inclined surface portion and a second concave portion. A first land portion has a first connection portion connected to a second land portion and a first bottom surface portion constitutes the bottom of the circumferential groove. The second land portion has a second connection portion connected to the first land portion and a second bottom surface portion constitutes the bottom of the circumferential groove. The first inclined surface portion and the second inclined surface portion are alternately arranged along a tire circumferential direction overlapping with each other and a see-through region of the circumferential groove is formed between them. | 11-17-2011 |
| 20110277895 | PNEUMATIC TIRE - A pneumatic tire has a shoulder land portion including a tread edge and a plurality of lateral grooves which are open to an outer wall of the shoulder land portion in a tread surface. One end in a tire circumferential direction of the outer wall is positioned on an inner side in a tire width direction with respect to another end between the lateral grooves which are adjacent to each other. A vacancy communicating with the lateral groove from the one end of the outer wall is formed so as to face the outer wall. A pawl portion protruding in the tire circumferential direction is provided in a wall surface of the lateral groove which is close to the other end of the outer wall. A height of the pawl portion from a bottom of the lateral groove is gradually decreased toward a leading end. | 11-17-2011 |
| 20110277896 | PNEUMATIC TIRE - A plurality of sipes extending in a tire width direction are provided in a tread surface of a block. In the sipes, protrusions are formed on a first sipe wall surface of mutually opposing sipe wall surfaces and recesses that engage with the protrusions are formed on a second sipe wall surface. Collapse of portions of the block sandwiched by the sipes is suppressed due to engagement of the protrusions and the recesses. A height of protrusions positioned on an upper portion in the depth direction of the sipes is greater than a height of protrusions positioned on a lower portion. | 11-17-2011 |
| 20110277897 | PNEUMATIC TIRE - An object of the present invention is to provide a pneumatic tire capable of, while restricting deformation of groove portions to prevent groove cracks, preventing chipping-off or break-off of protruding portions formed on wall surfaces of the groove as well as preventing irregular wear of the tire. In order to achieve the object, a pneumatic tire comprises a tread surface formed with a plurality of groove portions thereon, wherein at least one of the wall surfaces of the groove portion includes protruding portions and cut-off portions opened to the groove wall surface, and the protruding portions and the cut-off portions are formed alternately on the groove wall surface in an extending direction thereof. | 11-17-2011 |
| 20110277898 | TREAD WITH AN IMPROVED DRAINAGE SPACE - Tyre tread band ( | 11-17-2011 |
| 20110284141 | Rotating Sipe - A vehicle tire includes tread blocks positioned on the tire. One or more rotating sipes are formed in each of the tread blocks. Each rotating sipe comprises first and second walls that are substantially parallel wherein the first wall includes three points that lie in an imaginary plane and a fourth point that lies outside of the imaginary plane. | 11-24-2011 |
| 20110290391 | PNEUMATIC TIRE - Provision of a pneumatic tire with further enhanced low noise performance during running. Plural land portion rows are formed in a tread section ( | 12-01-2011 |
| 20110290392 | PNEUMATIC TIRE - A sipe extending in a tire width direction is provided in a land part (block) of a tread shoulder region, and the sipe is configured to include a first sipe part, a second sipe part having a groove width larger than the first sipe part and a third sipe part larger than the second sipe part. The first sipe part is formed over the whole of a sipe length direction in an opening side region of the sipe and the whole of a sipe depth direction in an inner region on the side of a tire equator; the third sipe part is formed in an outer region on the side of a tread ground contact end in a sipe bottom part region; and the second sipe part is formed in a region between the first sipe part and the third sipe part. | 12-01-2011 |
| 20110308681 | TIRE FOR MOTROCYCLE | 12-22-2011 |
| 20110315289 | PNEUMATIC TIRE - A sipe extending in a tire width direction is provided in a land part (block) of a tread shoulder region. An inner region on the tire equator side in a length direction of the sipe is formed in a straight sipe portion over the whole of a sipe depth direction. A region on the tread ground contact end side relative to the inner region is divided and provided in the straight sipe portion on the sipe opening side and a waveform sipe portion on the sipe bottom part side in the sipe depth direction. | 12-29-2011 |
| 20120000585 | Tread with Blocks - Tire tread comprising a plurality of rubber pads, each rubber pad being delimited by an incision of depth and of closed contour, this tread having:
| 01-05-2012 |
| 20120000586 | PNEUMATIC TIRE - A pneumatic tire is provided in the tread portion with zigzag circumferential grooves and axial grooves so that a row of circumferentially arranged blocks is formed on each side of each of the zigzag circumferential grooves. Each of the zigzag circumferential grooves is composed of axially inner and outer circumferential segments and oblique segments. The axially inner and outer circumferential segments are arranged alternately in the tire circumferential direction. The oblique segments connect between the axially inner and outer circumferential segments, whereby the zigzag circumferential groove extends in the form of a trapezoidal wave. The zigzag amplitude is in a range of from 4 to 15% of a half tread width (Tw/2). The width of the zigzag circumferential groove is in a range of from 7 to 13% of the half tread width (Tw/2). The number of the axial grooves connected to each of the zigzag circumferential grooves on both side thereof is in a range of from 8 to 12 when counted in a tire footprint. The axial grooves each have a groove width WY of from 8 to 25% of a pitch length Py between the axial groove and the circumferentially adjacent axial groove. | 01-05-2012 |
| 20120006456 | TIRE - Provision of a tire with enhanced wet weather performance while maintaining resistance to uneven wear performance without entailing an increase in the tread rubber volume. A center block row ( | 01-12-2012 |
| 20120018068 | PNEUMATIC TIRE - A pneumatic tire which comprises a land portion ( | 01-26-2012 |
| 20120024442 | Tire Tread - Tread band for a tire having a tread surface and comprising a plurality of recesses of total depth H* opening onto the tread surface, each recess comprising at least two cavities of a first type of cavities, each of these cavities of a first type being delimited by a main wall and having a depth Hi, the main wall of each cavity of the first type is such that its intersection with a virtual surface parallel to the running surface in the new condition and passing through the points of the said wall that are furthest towards the outside of the tread forms an exterior contour that is closed and of length Ce, the main wall of each cavity of the first type is such that its intersection with a virtual surface parallel to the running surface in the new condition and passing through the points of the main wall furthest towards the inside of the tread forms an interior contour which is closed and of length of length Ci, this tread band being characterized in that the cavities of a first type are arranged at different levels in a direction oriented from the tread surface towards the inside of the tread strip, and in that the length Ce of the exterior contour of a cavity is less than the length Ci of the interior contour of the same cavity. | 02-02-2012 |
| 20120024443 | MOTORCYCLE TIRE FOR OFF-ROAD TRAVELING - An off-road motorcycle tire | 02-02-2012 |
| 20120024444 | PNEUMATIC VEHICLE TIRE - A pneumatic vehicle tire, in particular for heavy commercial trucks, having a tread with a number of circumferential grooves which run in the circumferential direction and which separate profile positives, such as block rows or profile ribs, from one another. The circumferential grooves are each bounded by a groove base and two groove edges. In order to effectively prevent the occurrence of tears at the groove base of the circumferential grooves, in particular at the groove base of the circumferential grooves which extend on the shoulder side, the groove base extends, viewed in cross section and in the axial direction, at an angle of inclination of 3 degrees to 15 degrees with respect to an envelope which encompasses the outer faces of the profile positives. | 02-02-2012 |
| 20120031535 | IMPROVED HYDROPLANING PERFORMANCE FOR A TIRE - This invention relates generally to an improved design that provides better hydroplaning performance for a tire, and, more specifically, to a tire that has a variable pressure shear band located below its tread that provides increased structural stiffness to the tire, helping the tire to resist deformation when the tire encounters water, thereby decreasing the tendency of the tire to hydroplane. Advantageously, the variable pressure shear band can improve the hydroplaning performance and rolling resistance simultaneously without degrading wear performance. | 02-09-2012 |
| 20120037288 | Pneumatic tire - An object is to provide a pneumatic tire which can achieve both irregular wear performance and wet and on-snow performances. | 02-16-2012 |
| 20120037289 | PNEUMATIC TIRE - In addition to dramatic improvement of on-ice performance, to balance with other performances, by optimizing a tread pattern. | 02-16-2012 |
| 20120042998 | PNEUMATIC TIRE - A pneumatic tire having an enhanced cracking resistance at groove bottom, including at least one circumferential main groove | 02-23-2012 |
| 20120055601 | PROGRESSIVE TIRE MOLD ELEMENT WITH SCALLOPS AND TIRE FORMED BY THE SAME - Particular embodiments of the present invention include a progressive sipe mold member with scallops and a corresponding sipe formed within a tire tread. In a particular embodiment, the present invention includes a progressive sipe mold member for use in a mold, the mold member comprising: an upper mold member extending downwardly from a top end to a bottom end; and, a first lower projection member and a second lower projection member, each lower member extending downward from the upper mold member and having recesses on their inward and outward facing surfaces. The sipe mold member may also have a sweep axis along which the sipe mold member undulates in a desired path as well as an undulation in the upper mold member. The mold member creates a sipe in the tread of a tire that has the negative image of the shape of the mold member. | 03-08-2012 |
| 20120060989 | PNEUMATIC TIRE - A pneumatic tire including a closed sipe | 03-15-2012 |
| 20120067479 | METHOD OF DESIGNING RESONATOR AND PNEUMATIC TIRE HAVING THE RESONATOR - The present invention aims to provide a method of designing a resonator more simply by deriving a non-transcendental model formula, and to provide a pneumatic tire having the resonator designed by this method. A method of designing a resonator | 03-22-2012 |
| 20120073715 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion provided along each tread edge with shoulder blocks defined by a circumferentially extending shoulder main groove and shoulder lateral grooves extending from the shoulder main groove to the tread edge. The shoulder main groove is made up of groove segments curved convexly toward the tire equator so that each groove segment comprises a first inclined part and a second inclined part. The shoulder lateral grooves extend at 45 to 90 degrees with respect to the tire circumferential direction, and are coupled with the first inclined parts of the groove segments. The shoulder blocks are each subdivided by a shoulder sub groove extending at an angle of from 15 to 45 degrees with respect to the tire circumferential direction. The shoulder sub groove has an axially outer end connected with the shoulder lateral groove and an axially inner end coupled with the second inclined part. | 03-29-2012 |
| 20120090749 | PNEUMATIC TIRE - In a pneumatic tire in which the sipe extending in a direction crossing a tire circumferential direction is provided on a land portion (block) of a tread portion, a wide part having a wide groove width is provided at three or more places in a length direction of the sipe, and the wide part and a narrow part are formed alternately on a tread surface along the sipe length direction. A plurality of the wide parts are extended in a sipe depth direction from the tread surface, and are provided by changing extended lengths in the sipe depth direction. | 04-19-2012 |
| 20120097303 | METHOD AND CONSTRUCTION FOR IMPROVED SNOW TRACTION, HIGHWAY WEAR, AND OFF-ROAD PERFORMANCE OF A TIRE - A method of improving the snow traction and off-road performances of a tire and tire constructed according to such method are provided. More specifically, a method is provided for constructing the tread of a tire into inner and outer portions by extending a connecting sipe from the free edge of a tread feature that, connects to an inner sipe that surrounds a boss or projection within the tread feature. In some eases, this geometry is further optimized by designing She inner and outer portions of the other performance features. The present invention further relates to a tire having such tread constructions. | 04-26-2012 |
| 20120103489 | TREAD BAND FOR RETREADED TIRE - Included are tread bands for use on retreaded tires and methods for retreading a tire using such tread bands. Embodiments of such tread bands include a primary groove having a top opening that is open to a ground contacting front face of the tread band and a secondary groove having a bottom opening that is open to a back face of the tread band. The groove top of the secondary groove is higher than a groove bottom of the primary groove so that the secondary groove top is opened to the ground contacting front face of the tread band prior to disappearance by wear of the primary groove. Particular embodiments may also further include an overflow reservoir having a reservoir opening that is open to the back face of the tread band, the reservoir opening being positioned adjacent to an edge of the secondary groove bottom opening. | 05-03-2012 |
| 20120103490 | PNEUMATIC TIRE - A pneumatic tire including a closed sipe | 05-03-2012 |
| 20120111467 | PNEUMATIC TIRE WITH TREAD HAVING GROUND CONTACT SHAPE AND UNEVEN WEAR SACRIFICIAL PROTRUSION - A pneumatic tire with an air pressure corresponding to maximum loading, such that the ground contact shape has a gradually decreasing circumferential direction length from the tire width direction center to the portion corresponding towards the tire width direction outermost circumferential groove, followed by the ground contact shape having a gradually increasing circumferential direction length towards the tire width direction outside. In the ground contact shape, the relationships 0.02≦(A−B)/L≦0.1, and 0.02≦(C−B)/L≦0.1 are satisfied, in which A is the maximum length in the circumferential direction of the tire width direction outermost rib, L is the circumferential direction length of the tire width direction center, and B and C are distances in a tire circumferential direction which depend on the width of the tire width direction outermost rib and the width of the second rib from the outside in the tire width direction. | 05-10-2012 |
| 20120118457 | WINTER TYRE - A tyre includes: a tread band on which is defined a radially outer tread surface, a first plurality of blocks provided on the tread band, and at least a first sipe of the restrained type extending on at least one block of the first plurality in a substantially axial direction defined on the tread band. The first sipe is configured so as to define, between a first and a second block portion divided by the first sipe, at least two separate and distinct couplings of the male/female type, such as to prevent the mutual displacement of the block portions in any direction which, at the block, is substantially tangential to the tread surface, and such as to permit mutual displacement of the block portions in a direction incident to the tread surface. In addition, the first sipe does not intersect any other sipe of the restrained type within the block. | 05-17-2012 |
| 20120118458 | HEAVY DUTY PNEUMATIC TIRE - A heavy duty pneumatic tire comprises a tread portion provided with circumferentially continuous main grooves and lateral grooves to form blocks in circumferential rows. The main grooves include a pair of shoulder main grooves disposed one on each side of the tire equator so that the center line thereof is at a distance of 0.30 to 0.65 times one half of the tread width from the tire equator. The blocks include crown blocks disposed in a tread crown region between the shoulder main grooves, and shoulder blocks disposed in shoulder regions axially outside the shoulder main grooves. Each of the crown blocks and shoulder blocks is provided with at least one axially extending sipe. | 05-17-2012 |
| 20120118459 | PNEUMATIC TIRE - A pneumatic tire comprises a shoulder land portion extending a tire circumferential direction on a tread surface, and a narrow groove extending in the tire circumferential direction on the shoulder land portion, wherein dimples are arranged in a staggered manner with respect to the tire circumferential direction while overlapping with each other as seen in a depth direction of the narrow groove, on a groove wall in an inner side in a tire width direction of the narrow groove, and a plurality of rows of dimples are formed along the tire circumferential direction. | 05-17-2012 |
| 20120118460 | TIRE - A pneumatic tire ( | 05-17-2012 |
| 20120118461 | TIRE FOR CONSTRUCTION VEHICLE - A tire for a construction vehicle according to the present invention provides a tire for a construction vehicle having a belt formed by plural layers on the radially outer side of a crown portion of a carcass toroidally extending between a pair of bead portions, in which
| 05-17-2012 |
| 20120125500 | TIRE - A pneumatic tire ( | 05-24-2012 |
| 20120125501 | PNEUMATIC TIRE - In addition to dramatic improvement of on-ice performance, to balance with other performances. | 05-24-2012 |
| 20120132335 | RACING KART TIRE - A racing kart tire having a diameter of not more than 300 mm comprises a tread portion provided with blocks divided by tread grooves having widths of 3 to 20 mm. The grooves include a center longitudinal groove. The blocks on each side of the tire equator include a row of center blocks, a row of middle blocks and a row of shoulder blocks. The ground contact area of the middle block is less than that of the center block and also less than that of the shoulder block. | 05-31-2012 |
| 20120132336 | TIRE - A pneumatic tire ( | 05-31-2012 |
| 20120145294 | PNEUMATIC TIRE - A pneumatic tire with a tread has crown main grooves, shoulder main grooves, a pair of middle ribs between the crown main grooves and the shoulder main grooves, and a pair of shoulder ribs between the shoulder main groove and tread edge. The shoulder rib has shoulder lateral grooves spaced at a pitch Ps. The middle rib has middle inclined grooves spaced at a pitch Pm. The crown rib has a plurality of crown lateral grooves which cross over the crown rib and are spaced at a pitch Pc. The pitch Pc is larger than the pitch Ps and smaller than the pitch Pm. | 06-14-2012 |
| 20120160383 | PNEUMATIC TIRE - The present invention is directed to a pneumatic tire | 06-28-2012 |
| 20120160384 | PNEUMATIC TIRE - High wet braking performance is obtained without causing deterioration to other aspects of performance. | 06-28-2012 |
| 20120168048 | HEAVY DUTY TIRE - A heavy duty tire comprising: a shoulder rib (A | 07-05-2012 |
| 20120180919 | Tire Provided with Colored Appliques - The invention concerns a tire ( | 07-19-2012 |
| 20120186710 | METHOD AND CONSTRUCTION FOR IMPROVED SNOW TRACTION, HIGHWAY WEAR, AND OFF-ROAD PERFORMANCE - A method of improving the snow traction performance of a tire and tire constructed according to such method are provided. More specifically, a method is provided for constructing the tread of a tire into inner and outer portions that experience different radial deformations under operating conditions so as to improve snow traction and other performance features and also provided is a tire having such tread constructions. | 07-26-2012 |
| 20120186711 | TIRE - A pneumatic tire ( | 07-26-2012 |
| 20120199258 | TIRE WITH ASYMMETRIC GROOVE BOTTOM FOR SHOULDER GROOVE - A tire with a shoulder groove that has an asymmetric bottom is provided and, more particularly, a tire is provided having a shoulder groove that includes features at the bottom of the groove that help reduce stress and alleviate cracking from tire operation. The reduction is accomplished without the addition of material to the groove bottom. | 08-09-2012 |
| 20120216930 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion, a pair of sidewall portions, a pair of bead portions, and a protrusion. The protrusion includes a plurality of longitudinal ribs and a low height part. Each rib has a protruding height of 0.5 to 7.0 mm from the normal outer surface of the sidewall. Each low height part has a protruding height from the normal outer surface of the sidewall that is lower than that of the longitudinal ribs. The sidewall portion with the protrusion has a ratio between a total area of the protrusion projected onto the normal outer surface of the sidewall portion and an area between an outer circumferential line on the sidewall portion passing through a radially outmost point of the protrusion and an inner circumferential line on the sidewall portion passing through a radially innermost point of the protrusion in a range of from 50 to 80%. | 08-30-2012 |
| 20120216931 | TIRE - Wet performance and partial wear resistance of a tire are improved, and a noise generated during running of the tire is reduced. | 08-30-2012 |
| 20120222788 | PNEUMATIC TIRE - A pneumatic tire has a tread portion that includes a shoulder main groove and a plurality of shoulder lateral grooves. The shoulder main groove is disposed in the nearest side of a tread edge on the tread portion and extends continuously in a circumferential direction of the tire. The shoulder lateral grooves each extend from the shoulder main groove to the tread edge to form a plurality of shoulder blocks. The shoulder lateral grooves have a first portion extending from the shoulder main groove axially outside the tire and including at angle of not less than 70 degrees and less than 90 degrees with respect to a circumferential direction of the tire, and the second portion extending from the first portion axially outside the tire and inclining in a reverse direction of the first portion at angle of from 40 to 70 degrees with respect to the circumferential direction. | 09-06-2012 |
| 20120227883 | TIRE TREAD HAVING IMPROVED RIGIDITY - Tire tread having at least two wearing layers, provided with at least one continuous groove having in the as new condition a plurality of external cavities opening onto the tread surface and a plurality of internal cavities placed radially and completely inside the tread surface, such that: the difference between the mean lengths of the internal cavities and of the external cavities is at most equal to 20% of the longest mean length, the difference in the mean cross-sectional areas of the internal and external cavities is at most equal to 20% of the largest mean area, each external cavity of a continuous groove being connected to at least two internal cavities of the same groove and having a plurality of incisions opening onto the tread surface, each connecting two consecutive external cavities of the same groove and at least two connecting channels and at least one internal cavity. | 09-13-2012 |
| 20120234443 | PNEUMATIC TIRE - A pneumatic tire according to the present invention includes a tread section provided with circumferential grooves extending in a tire circumferential direction, lateral grooves extending in a tread width direction, and a plurality of land blocks defined by the circumferential grooves and the lateral grooves, each of the land blocks provided with sipes formed to extend to a predetermined depth from a tread surface inward in a tire radial direction, each of the sipes having an end portion communicating with at least any one of the circumferential grooves and the lateral grooves. At least one of the plurality of sipes includes an expanded diameter section on an inner end in the tire radial direction, and the expanded diameter section is formed to increase in diameter extending toward each of sidewalls of the land block. | 09-20-2012 |
| 20120261045 | PNEUMATIC TIRE - A pneumatic tire includes first and second side members at first and second sides and a tread section between the first and second side members. The tread section has a tread pattern including a pair of main grooves extending linearly in a circumferential direction of the tire and a land section extending in the circumferential direction between the main grooves. The land section includes a sub groove extending in the circumferential direction without connecting to the main grooves, and a first sipe connecting between the sub groove and one of the main grooves. The sub groove includes a first groove section extending diagonally toward the first side at 0 to 30 degrees with respect to the circumferential direction and a second groove section connecting to the first groove section and extending diagonally toward the second side at 10 to 45 degrees with respect to the circumferential direction. | 10-18-2012 |
| 20120267019 | OFF-ROAD MOTORCYCLE TYRE - A tyre for off-road motorcycles has a tread band provided with blocks, a carcass structure with crossed plies and at least one zero degree belt layer with limited angular extension, i.e., a zero degree belt layer which does not extend up to the axially outer edges of the tread band. | 10-25-2012 |
| 20120267020 | VEHICLE PNEUMATIC TYRE FOR UTILITY VEHICLES - The invention relates to a vehicle pneumatic tyre for utility vehicles having a tread ( | 10-25-2012 |
| 20120273104 | PNEUMATIC TIRE - A pneumatic tire including at least four circumferential main grooves extending in the tire circumferential direction and a plurality of rib-like land portions partitioned by the circumferential main grooves in the tread portion. Additionally, an outer side second land portion includes a zigzag narrow groove having a zigzag shape, extending in the tire circumferential direction, and dividing the outer side second land portion in the tire width direction; and a plurality of first sipes disposed at a predetermined pitch in the tire circumferential direction, extending from an edge portion on the outer side in the tire width direction of the outer side second land portion toward the inner side in the tire width direction, and terminating prior to the zigzag narrow groove, leaving a gap for ventilation. | 11-01-2012 |
| 20120273105 | WINTER TYRE WITH IMPROVED TRACTION ON SNOW SURFACES - A winter tyre with improved traction on snow surfaces; the tyre has a tread with a raised pattern defined by a number of longitudinal and transverse grooves which form at least one longitudinal row of blocks projecting radially from a base surface of the tread. Each block has two longitudinal lateral surfaces bounding two corresponding longitudinal grooves, and two transverse lateral surfaces bounding two corresponding transverse grooves. At least one of the blocks has lateral channels, each of which is formed on the lateral surface of a corresponding block, extends from the base surface of the tread to a top surface of the block, and is designed to impede radial spin-out of snow trapped inside the lateral channel. | 11-01-2012 |
| 20120273106 | TIRE | 11-01-2012 |
| 20120279624 | TIRE | 11-08-2012 |
| 20120291933 | PNEUMATIC TIRE AND METHOD OF MANUFACTURING THE SAME - A pneumatic tire including a resin layer on at least a portion of the tire inside surface, the resin layer being formed from a thermoplastic resin or a thermoplastic elastomer composition in which an elastomer is dispersed in a thermoplastic resin. The pneumatic tire is provided with a fastener including a base material formed from a thermoplastic resin and engaging elements formed on the base material. Additionally, the base material of the fastener is fixed to the resin layer via fusion bonding. | 11-22-2012 |
| 20120291934 | PNEUMATIC TIRE - An object is to provide a pneumatic tire with enhanced on-snow performance. On-snow performance is enhanced due to a tire | 11-22-2012 |
| 20120298270 | TYRE TREAD HAVING CAVITIES AND INCISIONS - A tire tread having a plurality of ribs delimited by cut-outs, each having a generally parallelepipedal shape and having a length (L) and a width (W), the width (W) being determined between a first lateral face and a second lateral face of the rib, the width (W) being less than the length (L), at least one rib having at least one cavity placed inside the rib, the cavity extending mainly in the length (L) of the rib. The tread having an incision extending mainly in the length (L) of the rib, the incision emerging on the first lateral face of the rib and the incision emerging in the cavity while forming an opening, the length (Lo) of the opening determined in the length (L) of the rib corresponding at least to 80% of the length (Lc) of the cavity determined in the length (L) of the rib. | 11-29-2012 |
| 20120305155 | PNEUMATIC TIRE - In a pneumatic tire, center land portions include a circumferential narrow groove extending in the tire circumferential direction so as to partition the center land portions in a tire width direction; a plurality of lug grooves disposed in each region of each of the center land portions partitioned by the circumferential narrow groove, extending in the tire width direction, so as to partition each of the regions of the center land portions in the tire circumferential direction; and a plurality of blocks partitioned by the circumferential narrow groove and the plurality of lug grooves. Blocks of the center land portions include one open sipe extending in the tire width direction so as to partition the blocks in the tire circumferential direction, and three or more closed sipes disposed in each of the regions of each of the blocks partitioned by the open sipe. | 12-06-2012 |
| 20120312439 | TIRE TREAD REINFORCED WITH SHORT ORIENTED AND CROSSED FIBERS - Tire tread provided with a tread surface designed to be in contact with a roadway, this tread comprising a sculpture formed by raised elements delimiting at least two grooves of generally circumferential orientation, this tread comprising a composite material constructed by the stacking of a plurality of layers of rubber, each layer comprising a plurality of short reinforcing fibers that are parallel with one another and oriented in a single direction, the short fibers being crossed from one layer of rubber to the adjacent layer]. Tire provided with such a tread. | 12-13-2012 |
| 20120325386 | PNEUMATIC TIRE TREAD - Pneumatic tire tread which reduces tread pattern noise while suppressing air column resonance from circumferential grooves is provided with a number of sets of resonators and at least two types of branch groove shapes; the length of the first branch grooves at least 40% of the length of the contact surface, and groove width between 10% and 25% of the circumferential groove width; the length of the second branch grooves between 40% and 90% of the length of the first branch grooves, and the groove width no less than the first branch groove width; first openings and second openings alternately present on same circumferential groove; length between openings in first branch grooves is no more than 50% of the length of the contact surface; difference between the minimum cross-sectional void ratio in the ribs where the branch grooves are provided and the maximum cross-sectional void ratio is no greater than 10%. | 12-27-2012 |
| 20120325387 | TIRE | 12-27-2012 |
| 20130000805 | PNEUMATIC TIRE - Provided is a pneumatic tire improved in on-ice friction properties of the tire, which is excellent in on-ice performance, in particular, on-ice braking performance. The pneumatic tire according to the present invention includes, in a tread portion surface located between both tread ends, a plurality of main grooves extending in a tire circumferential direction; a plurality of lateral grooves extending in a tire width direction, the lateral grooves each having one bent point so as to be in a convex shape in the tire circumferential direction between the main grooves and/or between the main groove and the tread end, the plurality of main grooves and the plurality of lateral grooves partition-forming a plurality of blocks each including a circumferential protrusion in a shape conforming to the convex shape of the lateral groove, the blocks each including at least one lateral sipe extending in the tire width direction in a shape conforming to the lateral grooves, in which the lateral sipe is equal in tire-width-direction dimension to the block having the lateral sipe disposed therein when both are projected onto the same plane which includes the tire rotation axis and is perpendicular to the block surface. | 01-03-2013 |
| 20130014870 | TREAD FOR A PNEUMATIC TIREAANM Georges; Francois Pierre Charles GerardAACI StavelotAACO BEAAGP Georges; Francois Pierre Charles Gerard Stavelot BEAANM Winkin; DidierAACI BastogneAACO BEAAGP Winkin; Didier Bastogne BEAANM Braun; LotharAACI BollendorfAACO DEAAGP Braun; Lothar Bollendorf DEAANM Le; Phuoc ThuanAACI AttertAACO BEAAGP Le; Phuoc Thuan Attert BE - A tread for a pneumatic tire includes a first circumferentially continuous groove, a second circumferentially continuous groove, a third circumferentially continuous groove, a fourth circumferentially continuous groove, a central rib interposed between the second and third axially inner circumferentially continuous grooves, a central rib, a first middle rib, a second middle rib, a first shoulder rib, and a second shoulder rib. The central rib extends continuously around a circumference of the tread. The first middle rib is interposed between the first and second grooves. The first middle rib extends continuously around the circumference of the tread. The second middle rib is interposed between the third and fourth grooves. The second middle rib extends continuously around the circumference of the tread. The first circumferentially extending shoulder rib is disposed laterally outside of the first circumferentially continuous groove. The second circumferentially extending shoulder rib is disposed laterally outside of the fourth circumferentially continuous groove. The central rib has a plurality of circumferentially spaced sipes originating at the second circumferentially continuous groove and extending axially and circumferentially across the central rib to the third circumferentially continuous groove. The first middle rib has a plurality of circumferentially spaced sipes originating at the second inner circumferentially continuous groove and extending axially and circumferentially across the first middle rib to the third circumferentially continuous groove. The second middle rib has a plurality of circumferentially spaced sipes originating at the third inner circumferentially continuous groove and extending axially and circumferentially across the second middle rib to the fourth circumferentially continuous groove. | 01-17-2013 |
| 20130014871 | TREAD FOR A PNEUMATIC TIREAANM Georges; Francois Pierre Charles GerardAACI StavelotAACO BEAAGP Georges; Francois Pierre Charles Gerard Stavelot BEAANM Winkin; DidierAACI BastogneAACO BEAAGP Winkin; Didier Bastogne BEAANM Braun; LotharAACI BollendorfAACO DEAAGP Braun; Lothar Bollendorf DEAANM Severens; Frank PierreAACI FrassemAACO BEAAGP Severens; Frank Pierre Frassem BEAANM Georges; Claude PierreAACI LuxembourgAACO LUAAGP Georges; Claude Pierre Luxembourg LUAANM Mathonet; Vincent BenoitAACI Habay la NeuveAACO BEAAGP Mathonet; Vincent Benoit Habay la Neuve BEAANM Scheuren; DanielAACI ArlonAACO BEAAGP Scheuren; Daniel Arlon BE - A tread for a pneumatic tire includes a first circumferentially continuous groove, a second circumferentially continuous groove, a central rib interposed between the two circumferentially continuous grooves and extending continuously around a circumference of the tread, a first circumferentially extending shoulder rib disposed laterally outside of the first circumferentially continuous groove, and a second circumferentially extending shoulder rib disposed laterally outside of the second circumferentially continuous groove. The central rib has a plurality of circumferentially spaced sipes arranged in a first circumferential row and a second circumferential row. The sipes of the first row originate at the first circumferentially continuous groove and the sipes of the second row originate at the second circumferentially continuous groove. The sipes of both the first and second rows extend axially inward to a circumferentially extending and continuous variable center groove. The variable center groove has a minimum circumferentially extending opening at a radially outermost portion. As the tread wears and the radially outermost portion of the tread moves radially inward, the circumferentially extending opening of the variable center groove widens to a maximum circumferentially extending opening greater than the minimum circumferentially extending opening. | 01-17-2013 |
| 20130014872 | TYRE TREAD INCLUDING AN IMPROVED NOISE REDUCTION DEVICEAANM Dautrey; NicolasAACI ChamalieresAACO FRAAGP Dautrey; Nicolas Chamalieres FRAANM Shimanaka; NanaeAACI OtaAACO JPAAGP Shimanaka; Nanae Ota JP - Tread for a tyre, made of a rubber material with a shore A hardness of at least 65, this tread being provided with at least one groove of circumferential overall direction, this tread comprising a plurality of closure membranes formed in at least one groove of circumferential overall direction, each closure membrane, of a mean thickness of at most 2 mm, closing a groove over at least 50% of the cross section of the said groove, each closure membrane being able to flex as liquid flows, the closure membranes furthermore being formed of a material with a shore A hardness of at most 62, this shore A hardness being lower than the shore A hardness of the tread. | 01-17-2013 |
| 20130014873 | TIRE HAVING TREAD WITH HIDDEN TREAD BLOCKS - Tires in use wear in a host of ways. One negative manner in which tires, especially truck tires, may wear is in an irregular fashion. When this phenomenon happens, the tread of the tire may become unusable, forcing the user to replace the tire, which is undesirable. This patent application poses a new and useful way of preventing irregular wear involving the use of hidden sipes or tread blocks. In some embodiments, these hidden sipes or tread blocks are found in tread blocks or ribs adjacent other tread blocks or ribs that have been determined to be susceptible to irregular wear. In other embodiments, the hidden sipes or tread blocks are formed by a sipe blade that has a connecting member to which two y-branched members are attached, and further comprising dividing members that connect between the y-branched members. | 01-17-2013 |
| 20130020001 | PNEUMATIC TIRE - A pneumatic tire capable of improving snowy road performance while controlling the occurrence of uneven wear of the tire due to buckling deformation. A tire | 01-24-2013 |
| 20130020002 | TIRE - In a pneumatic tire | 01-24-2013 |
| 20130020003 | SIPE GEOMETRY FOR IMPROVED BUFFING OF TREAD BAND - A mold for a tread layer having tread-forming side and sole-forming side, the sole-forming side having a plurality of mold elements extending there from toward the tread-forming side. Either the mold elements or the sole-forming side of the mold is configured to create a tread layer having a recessed tread element such as an incision, lateral groove, longitudinal groove or other void on the sole side of the tread layer that enables the edges of the recessed tread element to obtain full coverage when subjected to an abrasion process. | 01-24-2013 |
| 20130025756 | PNEUMATIC TIRE PRODUCTION METHOD | 01-31-2013 |
| 20130032261 | Pneumatic Tire - An object of the present technology is to provide a pneumatic tire whereby both performance on ice and dry performance can be achieved. A plurality of blocks is provided in a tread portion, a sipe being provided in at least one of the blocks. The sipe is, as a whole, a primary waveform sipe having, in a tread road contact surface, at least one peak portion and one trough portion. The primary waveform sipe is also an aggregation of secondary waveform sipes having a shorter wavelength. | 02-07-2013 |
| 20130037192 | PNEUMATIC TIRE - In a pneumatic tire including a tread portion, side wall portions, and bead portions, a plurality of drainage grooves formed from circumferential grooves or width direction grooves is provided in the tread portion. The drainage grooves partition land portions. A plurality of loop-shaped narrow grooves formed so that a pivot angle from a starting point to a terminating point is not less than 90° and less than 360° is concentrically disposed in the land portions. At least one end of the narrow grooves is open to a common drainage groove. | 02-14-2013 |
| 20130042953 | PNEUMATIC RADIAL TIRE FOR PASSENGER VEHICLES - A run-flat tire of the present invention is a pneumatic radial tire for passenger vehicles which has a carcass composed of plies of radially arranged cords toroidally extending between a pair of bead portions, and the a W/L ratio of the section width W to the outer diameter L of the tire is 0.25 or less. | 02-21-2013 |
| 20130048171 | TIRE CONTAINING SILICATE MICROFLAKES HAVING ENHANCED TRACTION CHARACTERISTICS - This invention discloses a tire having enhanced wet traction and ice traction characteristics. These tires are comprised of a generally toroidal-shaped carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead and sidewalls extending radially from and connecting said tread to said beads, wherein said tread is adapted to be ground-contacting, wherein the tread includes at least one circumferential groove which separates circumferential ribs, each circumferential groove having two sides and a base therebetween, and wherein the sides of each circumferential groove are comprised of a rubbery composition that includes silicate microflakes which are substantially aligned in an orientation which is parallel with the sides of the grooves. | 02-28-2013 |
| 20130048172 | HEAVY DUTY PNEUMATIC TIRE | 02-28-2013 |
| 20130061992 | HIGH MILEAGE TRUCK TIRE TREAD - A vehicle wheel tire having a symmetrical five rib tread construction with adjacent tread ribs comprising the tread separated by circumferential grooves. The intermediate tread grooves have an axial width wider than an axial width of the shoulder grooves and a center rib has an axial width wider than the axial widths of the intermediate ribs and the shoulder ribs. The axial width of the center rib, intermediate ribs, and shoulder ribs are within a prescribed preferred range of a total tread axial width and the axial width of each intermediate groove is within a prescribed preferred range of total tread axial width. | 03-14-2013 |
| 20130068360 | PNEUMATIC TIRE - A pneumatic tire comprises shoulder land zones and middle land zones divided by shoulder main grooves and a crown main groove. The shoulder land zone is divided by shoulder lateral grooves into shoulder blocks. The middle land zone is formed as a circumferential rib in substance. The middle land zone is provided with first and second middle outward slots which extend from the shoulder main groove toward the axially inside beyond the widthwise center line of the middle land zone, while gradually decreasing the width and inclining with respect to the tire axial direction at an angle θ1 and an angle θ2 (θ2>θ1), respectively, and terminate within the middle land zone. The open ends of the first and second middle outward slots respectively face the open ends of the shoulder lateral grooves at the shoulder main groove. | 03-21-2013 |
| 20130092303 | PNEUMATIC VEHICLE TYRE FOR UTILITY VEHICLES - The invention relates to a pneumatic vehicle tyre for utility vehicles having a belt which has a plurality of belt layers and having a tread ( | 04-18-2013 |
| 20130092304 | PNEUMATIC TIRE - A pneumatic tire is provided on the tread portion ( | 04-18-2013 |
| 20130105053 | PNEUMATIC TIRE | 05-02-2013 |
| 20130118663 | Pneumatic Tire - A pneumatic tire including a plurality of circumferential main grooves extending in a tire circumferential direction and a plurality of land portions partitioned and formed by these circumferential main grooves in a tread portion. Additionally, each of these land portions has a plurality of sipes, respectively. Moreover, not less than 90% of the sipes disposed in the inner side region are constituted by two-dimensional sipes and not less than 90% of the sipes disposed in the outer side region are constituted by three-dimensional sipes. The left and right shoulder land portions each have a plurality of lug grooves arranged in the tire circumferential direction. A pitch number N | 05-16-2013 |
| 20130118664 | HEAVY DUTY TIRE - In a pneumatic tire | 05-16-2013 |
| 20130126061 | Tire for Two-Wheeled Vehicles, Comprising a Tread Having Sipes - A tire for a motorized two-wheeled vehicle comprising a reinforcing structure of the carcass type, anchored on each side of the tire to a bead, each bead being extended radially outwards by a sidewall, the sidewalls radially towards the outside joining to a tread. At least the surface of the tread includes a first polymer compound extending over at least part of the central part and of at least one second polymer compound having physico-chemical properties different from those of the first polymer compound and covering at least part of the axially external parts of the tread, at least the central part of the tread comprises at least one incision, in the central part of the tread consisting of includes the first polymer compound, in a circumferential plane, at least part of one wall of the at least one incision is formed of at least two straight lines, each of the straight lines making with the radial direction an angle of between 5 and 65° and the directions of the straight lines making an angle of between 30 and 120° between them. | 05-23-2013 |
| 20130126062 | TIRE TREAD HAVING INCISIONS - A tread for a tire with raised elements delimited by cuts, at least one of these raised elements having a sipe of a maximum depth at most equal to the thickness of the tread, and running in a main direction determined by the ends of the sipe on the tread surface in the as-new condition and a secondary direction running into the thickness of the tread, having a first part, running in the secondary direction between the contact face in the as-new condition and a depth at least equal to 40% of the maximum depth and a second part extending the first part into the thickness of the tread, and extending over a depth. The second part has, in the main direction of the sipe, at least one first portion and at least one second portion, each having a length less than the length (L). | 05-23-2013 |
| 20130133798 | TIRE - In a tread part ( | 05-30-2013 |
| 20130139937 | TREAD PROTECTION DEVICE - Tire with radial carcass reinforcement having a tread of thickness E, this tread having a tread surface to come into contact with a roadway and comprising at least one cut opening onto the tread surface to form edge corners, this cut extending into the tread over a total depth H at most equal to the thickness E of the tread, this cut being, between the tread surface and a depth H | 06-06-2013 |
| 20130139938 | TIRE MANUFACTURING METHOD, TREAD MEMBER AND TIRE - Adhesiveness between the tread member and a tire frame member is raised whilst reducing the volume of a tread member and decreasing rolling resistance. | 06-06-2013 |
| 20130146190 | PNEUMATIC TIRE - Both wet weather performance and steering stability performance are achieved. Lateral main grooves ( | 06-13-2013 |
| 20130153104 | Snow Performance Peaks - A tire is disclosed having a tread extending from a first tread edge to a second tread edge and having a plurality of blocks defining a plurality of lateral grooves. The lateral grooves have a groove bottom defining a radial groove depth. A first biting side extends outwardly from the groove bottom to a first biting edge, and a first non-biting side extending outwardly from the groove bottom to a first non-biting edge. At least one peak is disposed in at least one of the lateral grooves. The peak extends outwardly from the groove bottom and terminates radially at an outer end and axially at a distance from the equatorial plane less than or equal to one half of the tread width. The peak has a height between 25 percent and 75 percent of the depth of its lateral groove. Multiple peaks may be disposed within a groove. | 06-20-2013 |
| 20130167996 | PNEUMATIC TIRE - A pneumatic tire includes a tread having a center main groove and a pair of shoulder main grooves, a pair of center portions between the center main groove and the shoulder main grooves, and a pair of shoulder portions between the shoulder main groove and tread edges. Each center portion includes: center lateral grooves extending from the shoulder main groove toward the axially inside of the tire without reaching the center main groove so as to have an axially inner end thereof on the center portion with an angle of 35 to 65 degrees with respect to an axial direction of the tire; center lateral sipes extending from axially inner ends of the center lateral grooves to the center main groove in the same inclination direction as the center lateral groove at an angle of 35 to 65 degrees with respect to an axial direction of the tire. | 07-04-2013 |
| 20130167997 | PNEUMATIC TIRE - A pneumatic tire has a tread portion divided into a crown rib, a pair of middle ribs and a pair of shoulder ribs by two crown main grooves and two shoulder main grooves. The width of the crown main groove is 5.5 to 7.5% of the tread width. The width of the shoulder main groove is 50 to 70% of the crown main groove width. The crown rib has crown sipes extending from the crown main grooves. The middle rib has axially inner middle sipes extending axially outward from the crown main groove and ending within the middle rib, and axially outer middle sipes extending axially inward from the shoulder main groove and ending within the middle rib. The shoulder rib has shoulder sipes extending axially outward from the shoulder main groove, and shoulder lug grooves extending axially inward from the tread edge ending within the shoulder rib. | 07-04-2013 |
| 20130167998 | TIRE - A pneumatic tire ( | 07-04-2013 |
| 20130180639 | PNEUMATIC TIRE - A pneumatic tire having improved performance on ice and wet road surfaces without degradation of steering stability on dry road surfaces. The pneumatic tire includes a tread portion, side wall portions, bead portions, a plurality of circumferential grooves extending in the tire circumferential direction and a plurality of lateral grooves extending in the tire width direction provided in the tread portion, a plurality of blocks partitioned by the circumferential and lateral grooves, and a plurality of sipes extending in the tire width direction in each block. At least some sipes include a main body part located centrally in the block width direction, and a deep-bottomed communicating portion that communicates with the circumferential groove adjacent to the block and has a depth not less than 50% the depth of the circumferential groove, and mutually mating convex and concave portions are formed locally in opposing surfaces in the deep-bottomed communicating portion. | 07-18-2013 |
| 20130186534 | Tire for a Two-Wheeled Vehicle, Comprising a Tread Having Sipes - A tire for a motorized two wheeled vehicle comprising a reinforcing structure of the carcass type, made up of reinforcing elements, anchored on each side of the tire to a bead the base of which is intended to be mounted on a rim seat, each bead being extended radially outwards by a sidewall, the sidewalls radially towards the outside joining to a tread. The tread comprises at least one incision and in a circumferential plane, at least part of one wall of the at least one incision forms with the radial direction an angle of between 5 and 45°, and the angle formed between at least one part of one wall of the at least one incision and the radial direction in a first circumferential plane is different from the angle formed between at least one part of one wall of the at least one incision and the radial direction in at least one second circumferential plane. | 07-25-2013 |
| 20130186535 | PNEUMATIC TIRE - The present invention has an object of providing a pneumatic tire having a tread pattern capable of providing both excellent drivability and a high partial wear resistance. The pneumatic tire of the present invention includes, in a tread surface, a compound groove partitioned into a first groove portion and a second groove portion by a first groove side and a second groove side, the first groove side having an oblique side portion diagonally disposed relative to a tire circumferential line in plan view, the second groove side intersecting with the oblique side portion of the first groove side at an acute angle in plan view, in which: the first groove portion and the second groove portion both have a groove depth that gradually reduces in an extending direction of the groove toward an intersection between the oblique side portion and the second groove side; and a groove wall extending from the first groove side is formed as a tapered surface mildly-sloped toward a groove bottom on the intersection side when viewed in the groove transverse direction. Further, the pneumatic tire of the present invention includes, in a tread surface, a groove partitioned by at least three groove sides in plan view, in which: one or more of groove walls extending from one of the at least three groove sides that extends in the longitudinal direction of the groove is formed as a tapered surface at least in part thereof; and the tapered surface forms an angle with a plane perpendicular to the tread surface, which varies in the extending direction of the groove side. | 07-25-2013 |
| 20130199684 | Pneumatic Tire - A circumferential narrow groove of a pneumatic tire is disposed at a position that partitions an outer side second land portion and an outer side shoulder land portion. A center land portion is a rib that is continuous in a tire circumferential direction, and an inner side second land portion and the outer side second land portion are rows of blocks divided in the tire circumferential direction by pluralities of lug grooves. Additionally, a groove area ratio S | 08-08-2013 |
| 20130206296 | Tire for Two-Wheeled Vehicles, Comprising a Tread Having a Circumferentially Continuous Groove - A tire for a motorized two-wheeled vehicle comprising a reinforcing structure of the carcass type, made up of reinforcing elements, anchored on each side of the tire to a bead the base of which is intended to be mounted on a rim seat, each bead being extended radially outward by a sidewall, the sidewalls radially toward the outside joining to a tread. At least the central part of the tread comprises at least one circumferentially continuous cut, the cut being made up, for at least 80% of its length of at least one incision and at most 20% of at least one part having a width greater than that of an incision and the apparent area of the at least one incision is greater than the apparent area of the at least one part having a width greater than that of an incision. | 08-15-2013 |
| 20130206297 | Tire for Two-Wheeled Vehicles, Including a Tread Having Sipes - A tire for a motorized two-wheeled vehicle comprising a reinforcing structure of the carcass type, made up of reinforcing elements, anchored on each side of the tire to a bead the base of which is intended to be mounted on a rim seat, each bead being extended radially outwards by a sidewall, the sidewalls radially towards the outside joining to a tread comprising incisions. The length of the incisions is less than 1.2 times the width of the area of the contact patch and at least one incision has at least one end which ends in a cut in the tread the width of which is greater than 2.5 mm and the length of which is between 2.5 and 10 mm. | 08-15-2013 |
| 20130206298 | PNEUMATIC TIRE TREAD COMPRISING A PLURALITY OF INCISIONS - A tread comprises a central zone with a width of between 70% and 80% of the width W of the tread. The central zone comprises one or more circumferential bands, each being delimited by two grooves of a width greater than or equal to 2 mm, and each comprising a contact surface intended to come into contact with the ground and a plurality of transverse sipes distributed evenly in the circumferential direction. Each sipe has, on the contact surface, a width less than 2 mm so as to define a mean circumferential void ratio, which is between 0.5 times and 1.5 times the ratio between a mean thickness (E) of the circumferential band to a mean circumferential radius of curvature (Rc) of the said circumferential band. The sipes divide the circumferential band into a succession of blocks, each having two edge corners intersecting the contact surface of the circumferential band, at least one of the edge corners of said block extending radially by an inclined part forming a chamfer. This inclined part connects the edge corner to a lateral wall of the block so as to generate an offset in the circumferential direction between the said edge corner and the lateral wall of the block. | 08-15-2013 |
| 20130206299 | HEAVY LOAD PNEUMATIC TIRE FOR CONSTRUCTION VEHICLES - Side lug rows are provided at both side regions of a tread surface and are formed by a plurality of lugs defined by lug grooves opening to edges in the tread width direction, and a central block row aligned on the tire equator and formed by a plurality of blocks is disposed between positions at ¼ of the tread surface width from the tire equator. The tire has a directional tread pattern, with a designated rotation direction, formed by circumferential grooves and width direction grooves that define the blocks of the central block row and are narrow grooves with a narrower groove width than the lug grooves. The distance from the tire equator to the groove wall in each of the circumferential grooves defining the blocks is set to be larger at a leading edge of each block than at a trailing edge of each block. | 08-15-2013 |
| 20130213542 | TIRE TREAD HAVING A PLURALITY OF WEAR LAYERS - Particular embodiments of the present invention include a multi-stage tire tread having two or more wear layers comprising an outer wear layer and one or more inner wear layers arranged within the thickness of the tread below the outer wear layer. One or more outer grooves are arranged within the outer wear layer, while one or more inner grooves arranged within at least one of the one or more inner wear layers. The tread further includes a volumetric void ratio equal to approximately 0.25 to 0.40 in the unworn condition and approximately 0.25 to 0.40 in a worn condition where the outer, ground-engaging side is arranged along one of the inner wear layers in the worn condition, the tread further having a contact surface ratio equal to approximately 0.66-0.72 in the unworn condition and approximately 0.56-0.66 in the worn condition. | 08-22-2013 |
| 20130213543 | TIRE TREAD WITH SIPES AND A METHOD FOR THE MANUFACTURE OF A TIRE TREAD WITH SIPES - A tire with certain tread features and a method for manufacturing the tread for such a tire are provided. More particularly, a tire and method for manufacturing a tire having a tread portion with sipes that can be of minimal thickness and varying geometries, densities, and profiles may be provided. The sipes can also be hidden until after a period of tread wear has occurred. | 08-22-2013 |
| 20130220499 | PNEUMATIC TIRE - A pneumatic tire has: a circumferential groove on each side of the tire equator; oblique grooves extending from the circumferential groove while inclining to one circumferential direction; and lug grooves extending axially outwardly beyond the tread edges from positions axially outside the circumferential groove while inclining to the one circumferential direction. The lug grooves include: a first lug groove comprising an axially inner steeply-inclined part and an axially outer mildly-inclined part; and a second lug groove extending along the mildly-inclined part. The axially inner end of the first lug groove is at a distance La of 8 to 12% of the tread width from the circumferential groove. The steeply-inclined part inclines at an angle larger than an inclination angle of the oblique grooves. | 08-29-2013 |
| 20130220500 | HEAVY DUTY PNEUMATIC TIRE - A heavy duty pneumatic tire has a belt and a tread such that ratio of width of the belt to width of the tread is greater than or equal to 0.95 and is not greater than 1.0. The tread has shoulder land portions on outer sides in axial direction, each shoulder portion has a cap layer including a body portion and a pad, the pad has complex elastic modulus greater than complex elastic modulus of the body portion, the body portion has loss tangent less than loss tangent of the pad, and each shoulder portion has ground-contact surface which has outer and inner ground-contact surfaces separated by boundary between the body portion and pad such that ratio of average ground-contact pressure of the outer ground-contact surface relative to average ground-contact pressure of the inner ground contact surface is greater than or equal to 0.85 and is not greater than 0.95. | 08-29-2013 |
| 20130220501 | PNEUMATIC RADIAL TIRE FOR PASSENGER CARS - The pneumatic radial tire for passenger cars according to the present invention specifies the ratio W/L between the section width W and outside diameter L and includes a width direction groove located at an appropriate position on the tread surface. | 08-29-2013 |
| 20130240100 | Pneumatic Tire - A pneumatic tire having a tread portion, side wall portions, and bead portions includes at least one row of blocks constituted by a plurality of blocks aligned in a tire circumferential direction formed in a vehicle inner side region and a vehicle outer side region of the tread portion. Sipes extend in a tire width direction in each of the blocks. A pitch count of the blocks constituting the row of blocks in the vehicle inner side region is greater than the pitch count of the blocks constituting the row of blocks in the vehicle outer side region. Sipes formed in the blocks in the vehicle outer side region are provided with a structure extending in a linear manner along the depth direction thereof and sipes formed in the blocks in the vehicle inner side region are provided with a structure extending while curving along the depth direction thereof. | 09-19-2013 |
| 20130240101 | Pneumatic Tire - The contact patch of the center land portion partitioned by the center side main grooves protrudes outward in the tire radial direction from the overall standard profile line of the tread portion. The maximum protruding amount is not less than 1.0% and not more than 2.5% of the tire width direction dimension of the center land portion. The contact patch of the intermediate land portion partitioned by the center side main groove and the shoulder side main groove protrudes outward in the tire radial direction from the standard profile line. The maximum protruding amount is not less than 0.7% and not more than 2.0% of the tire width direction dimension of the intermediate land portion. The maximum protruding amount of the center land portion is greater than the maximum protruding amount of the intermediate land portion. | 09-19-2013 |
| 20130240102 | Tire and Mold Comprising a Fluidic Passage | 09-19-2013 |
| 20130248068 | PNEUMATIC TIRE - On the surface of a tread portion ( | 09-26-2013 |
| 20130263987 | PNEUMATIC TIRE - A land ratio of a shoulder portion Sh of a tread portion is 57 to 72%, and a land ratio of a center portion Ce is 40 to 55%. In the center portion Ce, one row block made up of center blocks is formed. Each of the center blocks has its width gradually reduced from a position establishing an axial maximum width BW toward both a leading end and a trailing end relative to the tire rotating direction, each of the center blocks being provided with, at the leading end thereof, a tip portion that sharpens toward the leading end, and being provided with, at the trailing end thereof, a concave portion that smoothly concaves toward the leading end. In each of the center blocks, a ratio (BL/BW) between the axial maximum width BW and a maximum length BL in the circumferential direction is 1.00 to 1.20. | 10-10-2013 |
| 20130269846 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion provided with a circumferential shoulder main groove, shoulder lateral grooves extending from the shoulder main groove toward a tread edge, and middle lateral grooves extending from the shoulder main groove toward a tire equatorial plane, the shoulder main groove extending in a zigzag manner through an axially innermost and outermost points alternately, each middle lateral groove extending from each innermost point of the shoulder main groove with an angle of 50-75 degrees with respect to a tire axial direction, and each shoulder lateral groove extending from the shoulder main groove with the same inclination direction with the middle lateral groove at an angle of 10-25 degrees with respect to the tire axial direction, wherein the number of shoulder lateral grooves is larger than the number of middle lateral grooves. | 10-17-2013 |
| 20130269847 | PNEUMATIC TIRE - A land ratio of a shoulder portion Sh of a tread portion is 57 to 72%, and a land ratio of a center portion Ce is 40 to 55%. In the center portion Ce, one row block made up of center blocks is formed. Each of the center blocks has its width gradually reduced from a position establishing an axial maximum width BW toward both a leading end and a trailing end relative to the tire rotating direction, each of the center blocks being provided with, at the leading end thereof, a tip portion that sharpens toward the leading end, and being provided with, at the trailing end thereof, a concave portion that smoothly concaves toward the leading end. In each of the center blocks, a ratio (BL/BW) between the axial maximum width BW and a maximum length BL in the circumferential direction is 1.00 to 1.20. | 10-17-2013 |
| 20130276947 | TIRE - In a tire according to the present invention, a groove portion extending in a tire circumferential direction is formed in a tread portion | 10-24-2013 |
| 20130284332 | INTEGRATED PROCESS TO GENERATE NEAR-ZERO THICKNESS SIPES IN A TIRE - The present invention comprises tire treads having sipes or other voids formed of non-curable inserts, as well as methods for forming sipes or other voids within a tread using non-curable inserts and apparatus for performing the same. Such methods include providing an uncured tread having a width and a thickness bounded by an outer side and a bottom side. Such methods further include providing a strip of non-curable material, the strip having a width and a length. Furthermore, such methods include inserting the strip of non-curable into the tread thickness from the tread outer side and to a predetermined depth within the tread thickness to form a void-forming insert within the tread thickness. Finally, these methods include curing the tread with the non-curable strip arranged within the tread thickness. The inserts may be folded, which may occur as the strips are inserted into the tread or prior to such insertion. | 10-31-2013 |
| 20130284333 | PNEUMATIC TIRE FOR RUNNING ON ROUGH TERRAIN - A pneumatic tire for running on rough terrain is provided in the tread portion with crown blocks, middle blocks and shoulder blocks. Aspect ratios of the crown blocks are less than those of the middle blocks and shoulder blocks. The crown blocks include shifted blocks provided with a slot to form two subdivided block pieces circumferentially shifted from each other. The middle blocks and the shoulder blocks including cut blocks provided with a U-shaped cut opened at the top face and a side face of the block. | 10-31-2013 |
| 20130292019 | TREAD FOR THE TIRE OF A FARM TRACTOR - A tread and tire for a multipurpose agricultural machine, that improves field traction while ensuring a satisfactory compromise with wear under engine torque and vibratory comfort on the road having a tread having a plurality of lugs distributed in a first row extending axially from a first axial end of the tread and in a second row extending axially from a second axial end of the tread, the second row differing from the first row by a symmetry relative to the equatorial plane of the tire followed by a rotation about the rotation axis of the tire, each row having an alternation of long lugs and of short lugs. The axially inner end face of a first long lug of a row of lugs is separated from the trailing lateral face of the second long lug of the symmetrical row of lugs, closest to the axially inner end face of the first long lug, by an end groove with a width at least equal to 10% and at most equal to 100% of the lug height. | 11-07-2013 |
| 20130299054 | PNEUMATIC TIRE FOR MOTORCYCLE - Provided is a pneumatic tire for a motorcycle that suppresses the occurrence of a crack at a groove bottom in a shoulder region while achieving a good balance between straight-running stability, abrasion resistance, grip performance during cornering, and cornering stability. The pneumatic tire for a motorcycle is provided with a ring-shaped tread section | 11-14-2013 |
| 20130312889 | PNEUMATIC TIRE - A pneumatic tire includes, on a tread surface ( | 11-28-2013 |
| 20130333816 | TIRE - In the tire ( | 12-19-2013 |
| 20130340907 | TIRE WITH A SEGMENTED OVERLAY LAYER - A pneumatic tire includes a pair of axially spaced apart annular bead cores, a carcass ply extending around both bead cores, a tread for engaging a contact surface and a belt structure. The tread has at least one circumferential groove extending radially inward from a radially outer surface of the tread. The belt structure includes at least one belt layer and an overlay comprising at least one overlay layer. The overlay layer is disposed under the circumferential groove and has an axial width between 70% and 200% of an axial width of the circumferential groove. The overlay layer is a reinforced ply layer or a layer comprising a fabric. | 12-26-2013 |
| 20140000774 | TYRE | 01-02-2014 |
| 20140014245 | TIRE FOR A HEAVY VEHICLE, AND ARRANGEMENT OF TIRES ON THE DRIVE AXLE AND ON THE STEERING AXLE - Tire for a heavy goods vehicle having a tread provided on one side of the equatorial median plane with a sculpture of a first kind and on the other side of the equatorial median plane with a sculpture of a second kind, the first kind of sculpture comprising at least three grooves of generally circumferential orientation, these grooves delimiting at least two ribs of generally circumferential orientation, these ribs being provided with a plurality of sipes oriented transversely or substantially transversely, the second kind of sculpture comprising at least two grooves of generally circumferential orientation and a plurality of grooves of generally transverse orientation, these grooves delimiting a plurality of blocks, defined on each kind of sculpture is a ratio of surface recess, this tread being characterized in that the ratio of surface recess of the first kind of sculpture is equal to the ratio of recess of the second kind of sculpture. | 01-16-2014 |
| 20140014246 | PNEUMATIC TIRE - An object is to enhance traction performance and handling stability performance, these being related to braking performance and acceleration performance on snowy road surfaces. A tread ( | 01-16-2014 |
| 20140014247 | MOTOR VEHICLE TIRE HAVING TREAD PATTERN (as amended herein) - A tyre for a motor vehicle includes a tread and two shoulders. The tread includes a circumferential row of blocks between first and second circumferential grooves. Each of the blocks is delimited by a section of the first circumferential groove and by first and second transverse grooves that terminate at a common vertex spaced from the second circumferential groove. The common vertex is separated from the second circumferential groove by a continuous circumferential tread rib. The second transverse groove delimits one of the blocks and is separated from the first transverse groove that delimits a circumferentially adjacent block by a solid tread portion. The solid tread portion extends from the first circumferential groove to the continuous circumferential tread rib. The common vertex of each block is located at a position axially intermediate the first circumferential groove and a portion of one of the transverse grooves that delimits the block. | 01-16-2014 |
| 20140020803 | PNEUMATIC TIRE - An object is to enhance traction performance on snowy road surfaces whilst suppressing a drop in braking performance and handling stability performance on dry road surfaces and icy road surfaces. | 01-23-2014 |
| 20140034201 | PNEUMATIC TIRE FOR TWO-WHEELED MOTOR VEHICLE - In a pneumatic tire for a motorcycle employing a spiral belt, a crack is inhibited from being generated from the end section of a groove formed on the surface of a tread section to improve abrasion resistance. | 02-06-2014 |
| 20140041778 | PNEUMATIC TIRE FOR RUNNING ON ROUGH TERRAIN - A pneumatic tire for running on rough terrain comprises a tread portion provided with center blocks, middle blocks and shoulder blocks to form a block tread pattern, wherein some or all of the center blocks are each provided with a slot positioned at the midpoint of the block in the tire circumferential direction, and extending axially inwardly from a sidewall surface of the block oriented toward a tread edge, and terminating within the block. | 02-13-2014 |
| 20140053962 | WEAR-OPTIMIZED TREAD FOR A HEAVY-VEHICULE TIRE, AND OPTIMIZATION METHOD - Tread for a tire for an axle of a heavy goods vehicle, comprising at least four grooves of generally circumferential orientation delimiting a plurality of ribs comprising two shoulder ribs axially delimiting the tread and intermediate ribs and a central rib, the intermediate and central ribs each being provided with a plurality of sipes having a width of less than 2 mm, and of generally transverse orientation, inclined at an average angle relative to a direction perpendicular to the running surface of the tread in the new state, this average angle being at least equal to 5 degrees and oriented such that the resultant force exerted, when running in the zone of contact with the road surface, by the said road surface on the tread tends to straighten out the sipes towards an average zero angle relative to this same perpendicular direction, this tread being characterized in that the following relations are satisfied: | 02-27-2014 |
| 20140069561 | TIRE TREAD WITH GROOVE REINFORCEMENT - The present invention relates to a tire tread comprising a plurality of circumferential grooves separating circumferential ribs, each groove comprising a bottom and two sidewalls, and a plurality of laterally separated reinforcements, wherein one reinforcement is arranged adjacent each circumferential groove, and wherein each reinforcement extends from the radially inner surface of the tread in a radial direction at least to the bottom of an adjacent circumferential groove to form the bottom of that groove. Further, the invention relates to a tire comprising a tread in accordance with the present invention. | 03-13-2014 |
| 20140090761 | TIRE TREAD FOR A TRAILER-TYPE HEAVY VEHICLE AND MOLDING COMPONENT - A tread and a tire for a heavy vehicle, and a molding element therefor, this tread comprising a plurality of sipes of circumferential overall orientation and of width (Li), each of these sipes extending into the depth of the tread over a depth (P) that is less than the mean thickness (E) of the tread, each sipe being extended radially inwards by a channel having lateral walls that, when the tread has become partially worn, delimit a new groove, these lateral walls connecting to a bottom , each sipe connecting together a plurality of drainage wells, each formed in the thickness of the tread opening via a first opening onto the tread surface the maximum dimension of which is at least equal to twice the width of the sipe and via a second opening into a channel; for each sipe of circumferential overall orientation, there is at least one drainage well in the contact patch and, in the continuation of each drainage well, a protrusion on the bottom of the channel. | 04-03-2014 |
| 20140110025 | TREAD FOR HEAVY GOODS VEHICLE TIRE - Tread for a tire for a heavy goods vehicle of total thickness E and of total volume V, having at least one continuous groove comprising: at least two wearing layers in the thickness of the tread, each having a thickness at most equal to 75% of the total thickness E of the tread, a plurality of external cavities and a plurality of internal cavities positioned radially and entirely on the inside of the tread surface in the new state, each internal cavity being connected to an external cavity by a connecting channel, and having a total voids volume Vc at least equal to 7% and at most equal to 12% of a volume equal to the sum of the total volume V and of the total voids volume, and having an effective voids volume Ve for each wearing layer less than the total voids volume Vc, and satisfying the equation: 0.4 St−65° C. | 04-24-2014 |
| 20140124109 | PNEUMATIC TIRE - A pneumatic tire having a specified rotational direction and including land portions formed compartmentally on the tread of the pneumatic tire by disposing plural inclined grooves extending from both tread ends respectively toward the tire equator and inclined toward the rotational direction with respect to a tire width direction, and also including branch grooves on the tread, each of the branch grooves diverging from a portion of the inclined groove within an area till ¼ of the tread width from the tread, extending to the tire equator in the opposite tire circumferential direction of the inclined groove with respect to the tire width direction and terminating within the land portions. | 05-08-2014 |
| 20140124110 | TIRE - Stepped sections ( | 05-08-2014 |
| 20140124111 | PNEUMATIC TIRE AND METHOD OF DESIGNING TREAD PATTERN THEREOF - A pneumatic tire reduces the columnar resonance noise of the tire while controlling the lowering of wet performances, wherein four circumferential grooves continuously extending in the circumferential direction of the tire are disposed in a treading face and a plurality of lateral grooves each having one end opened to the circumferential groove and terminated in a land portion are formed with respect to two circumferential grooves among the four circumferential grooves, and these lateral grooves and the respective circumferential grooves have such a groove width that both groove walls of the groove do not contact with each other in a ground contact face and one or more lateral groove are always completely included in the ground contact face, and an extending length of a portion of each lateral groove in the ground contact face having a groove width of the lateral groove corresponding to not less than 30% of a groove width of the circumferential groove is made not less than 40% of an extending length of the circumferential groove in the ground contact face. | 05-08-2014 |
| 20140130950 | TIRE TREAD HAVING GROOVE WITH INTERNAL VOIDS - A tire having a tread with a novel groove structure for enhanced wet and snow traction is provided. The groove includes an upper portion and a lower portion that can provide enhanced wet and snow traction over various stages of tread wear without unnecessary compromise to the tread rigidity. The lower portion includes one more voids for the accumulation and/or evacuation of fluids. | 05-15-2014 |
| 20140138001 | PNEUMATIC TIRE - Provided is a pneumatic tire which can fundamentally prevent the phenomenon in which cracks are generated in the bottoms of grooves and the areas where the side walls of blocks meet the bottoms of grooves, can suppress irregular abrasion of the tread, can enhance the overall rigidity of the tread, and can also enhance the drainage performance. | 05-22-2014 |
| 20140150944 | PNEUMATIC TIRE - The invention provides a pneumatic tire which can reduce a rolling resistance while maintaining an wear resistance. Among a cap portion in a center area, at least the cap portion of a center land portion is provided with a cap front layer which includes a surface, and a cap inner layer which is laminated in an inner periphery of the cap front layer. A loss tangent of the cap front layer is set to be smaller than a loss tangent of the cap inner layer and be smaller than a loss tangent of the cap portions in the shoulder areas. | 06-05-2014 |
| 20140158263 | PNEUMATIC RADIAL TIRE FOR A PASSENGER VEHICLE AND METHOD OF USING THE TIRE - Provided is a pneumatic radial tire for a passenger vehicle, having a carcass, and including a belt and a tread disposed on the outside of the carcass, in which: a section width SW and an outer diameter OD of the tire have a ratio of SW/OD≦0.26 when SW<165 (mm), and SW and OD satisfy a relationship formula OD≧2.035×SW+282.3 when SW≧165 (mm); and provided that V1 represents a volume of rubber lying inside than the both ends of a maximum-width belt layer having a maximum width among the belt layers while lying outside than the reinforcing member which is the outermost layer of the belt layers at the center position in the tire width direction, and that V2 represents a total volume of all the grooves formed in a surface of the tread, V1 and V2 has a ratio V2/V1≦20%. | 06-12-2014 |
| 20140158264 | TIRE - This pneumatic tire has a plurality of rib grooves ( | 06-12-2014 |
| 20140166171 | ENHANCING TREAD WEAR SPEED AND TRACTION PERFORMANCE - Provided is a tire tread for a tire comprising a plurality of ribs or blocks, a plurality of grooves defined by adjacent ribs or blocks, and a plurality of sipes formed in each of the ribs or blocks. Each of the ribs or blocks has a length extending in a circumferential direction, a width extending in an axial direction, and a depth extending in a radial direction. Each of the sipes extends at an angle to the radial direction either between 0 and 70 degrees, inclusive; or between −70 and 0 degrees, inclusive. Each sipe may have a thickness between nano thickness and 0.50 mm, inclusive. Each sipe may be spaced along the circumferential direction from an adjacent sipe by some interval having a length that does not exceed 20 mm. The ratio of the interval length to a standard contact patch length is less than 0.062. | 06-19-2014 |
| 20140174617 | TIRE - A tyre wherein a first bulge part and a second bulge part are formed in a circumferential direction groove. The first bulge part has a narrow-tip shape such that, in the tyre tread plan view, the size in the tread width direction diminishes along a first direction in the tyre circumferential direction. The second bulge part has a narrow-tip shape such that, in the tyre tread plan view, the size in the tread width direction diminishes along a second direction opposite to the first direction in the tyre circumferential direction. A plurality of first bulge parts and second bulge parts are provided at predetermined intervals in the tyre circumferential direction. A groove part which extends in the tyre circumferential direction is provided between the first bulge part and the second bulge part which opposes the first bulge part in the tread width direction. | 06-26-2014 |
| 20140190608 | TIRE MOLD, TIRE, AND TIRE MANUFACTURING METHOD - The tread surface of a tire according to the present invention is molded with a tire mold having a tread molding surface, and at least a portion of the tread molding surface is formed by projecting spherical projection material having a predetermined sphericity and causing the spherical projection material to collide. | 07-10-2014 |
| 20140209225 | PNEUMATIC TIRE - A pneumatic tire has a tread portion provided with two crown main groove and two shoulder main grooves and divided into a center land zone, two middle land zones and two shoulder land zones. The middle land zone is provided with middle auxiliary grooves. The shoulder land zone is provided with shoulder axial grooves. The width of the shoulder axial groove at the axially outer end is more than the width of the shoulder axial groove at the axially inner end. Through the shoulder main groove, the shoulder axial grooves are continued to the respective middle auxiliary grooves. | 07-31-2014 |
| 20140209226 | TYRE FOR A VEHICLE WHEEL INCLUDING A TREAD-BAND PATTERN - A tyre for a vehicle wheel includes a tread band. The tread band includes a pattern, including at least two circumferential portions, an elongated ridge, and at least two shoulder blocks. The at least two circumferential portions are disposed in axial side-by-side relationship. At least one of the circumferential portions includes a first geometric module repeated along a circumferential extension direction of the tyre. The elongated ridge is bounded by two grooves oblique to the circumferential extension direction and is divided into a plurality of intermediate blocks with respect to an axial extension direction of the tread band. The intermediate blocks are bounded by a plurality of cuts substantially transverse to the elongated ridge. The at least two shoulder blocks are associated with the elongated ridge, are circumferentially aligned along a side edge of the tread band, and are bounded by grooves oriented substantially transversely to the circumferential extension direction. | 07-31-2014 |
| 20140216617 | TIRE - A tire provided with a plurality of land portions formed by a main groove extending along a tire circumferential direction, wherein the main groove is formed with one intra-groove recessed in a tire inner direction from a surface of the main groove, the intra-groove comprises: a first circumferential groove portion extending along the tire circumferential direction on the first groove wall; a first inclined portion extending from the first groove wall toward the second groove wall on a groove bottom of the main groove; a second circumferential groove portion extending along the tire circumferential direction on the second groove wall; and a second inclined portion extending from the second groove wall toward the first groove wall on the groove bottom of the main groove. | 08-07-2014 |
| 20140216618 | PNEUMATIC TIRE FOR AN AUTO MOTORCYCLE - Provided is a pneumatic tire for an auto motorcycle, in which a plurality of different grooves are formed as three different oblique lug grooves ( | 08-07-2014 |
| 20140230979 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion provided with a pair of center main grooves to define a center portion therebetween, a pair of shoulder main grooves arranged axially outside the center main grooves to define a middle portion between the center and shoulder main grooves, and middle lateral grooves to divide the middle portion into middle blocks. Each center main groove extends in a zigzag manner including inclined long sides and inclined short sides alternately arranged in a circumferential direction of the tire. The center portion is provided with at least six center sipes within a circumferential region corresponding to a pitch of middle lateral grooves. Each middle block has a circumferential length of 85% to 95% the pitch, and is provided with at least one middle sipe. The number of middle sipe on each middle block is five or less. | 08-21-2014 |
| 20140230980 | TIRE WITH TREAD HAVING IMPROVED SNOW AND DRY TRACTION - This invention relates generally to tires having treads that have a configuration and/or properties for providing suitable snow and dry traction, and, more specifically, to a tire that has a tread that has a maximum value for sipe density in the contact patch, a minimum value for lateral groove density in the contact patch, and a minimum value for the longitudinal contact surface ratio. In certain embodiments, the pitch length of pitches or repeating units of tread geometry along the circumferential direction of the tire is within a certain range and the tread depth is below a specified value. Tires with treads having a configuration that falls within these design parameters exhibit a desirably good level of snow and dry traction. | 08-21-2014 |
| 20140238567 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion provided with a pair of shoulder main grooves adjacent to each tread edge and a pair of center main grooves disposed axially inwardly of the shoulder main grooves to define a pair of middle portions each of which is between the adjacent shoulder main groove and center main groove. The center main grooves have groove widths larger than the groove widths of the shoulder main grooves. The respective middle portions are provided with a plurality of inner middle lug grooves extending axially outwardly of the tire from the center main groove, and a plurality of outer middle lug grooves extending axially inwardly of the tire from the shoulder main groove. The total number of inner middle lug grooves is smaller than the total number of outer middle lug grooves in each middle portion. | 08-28-2014 |
| 20140238568 | PNEUMATIC TIRE FOR HEAVY LOAD - An object of the present invention is to provide a tire for heavy load, which exhibits good performances in both fuel efficiency and drainage. One example of the pneumatic tire comprising a tread portion and a pair of circumferential main grooves formed in a ground contact surface of the tread portion to section the ground contact surface of the tread portion into the central region and respective side regions, wherein the tire further comprises three circumferential narrow grooves formed in the central region to demarcate four rib-like center land portions in the central region; and the central region has a structure in which openings of the circumferential narrow grooves are closed so that the rib-like center land portions adjacent to each other with the circumferential narrow grooves therebetween are in contact with and thus supported by each other when the tire is in contact with the ground. | 08-28-2014 |
| 20140261936 | PNEUMATIC TIRE - A pneumatic tire comprises a tread block having a top face provided with a three-dimensional sipe, the sipe extending along its longitudinal direction with an angle of 0 to 45 degrees with respect to a tire axial direction, the sipe having a first opening configuration extending in a wavy manner with amplitude W and a cycle a1 in a cross sectional view of the block parallel to the top face, the sipe having a second opening configuration extending in a wavy manner with amplitude W and a cycle a2 in a cross sectional view of the block perpendicular to the longitudinal direction of the sipe, and the sipe satisfying the following relation (1) in a rectangular coordinate system in which the x-axis corresponds to the longitudinal direction, the z-axis corresponds to a depth direction of the sipe: | 09-18-2014 |
| 20140261937 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion provided with a tread pattern with a designated rotational direction. The tread pattern includes a plurality of V-shaped main inclined grooves that protrude toward the rotational direction and extend from one tread edge to the other tread edge, a pair of connecting grooves disposed both sides of a tire equator between the circumferentially adjacent main inclined grooves, and a center block divided among the circumferentially adjacent main inclined grooves and the one pair of connecting grooves. The center block has a trapezoidal-like shape that comprises a laterally extending leading edge and a laterally extending trailing edge having an axial length larger than that of the leading edge. | 09-18-2014 |
| 20140283966 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion provided with a pair of crown main grooves and a pair shoulder main grooves to divide middle portions and shoulder portions, the tread portion having a contact surface covered with a cap rubber layer with a loss tangent of from 0.03 to 0.18, the middle portions provided with only middle lug grooves with groove widths within 2 mm, each middle lug groove extending from one end connected either the crown or shoulder main groove to the other end terminating within the middle portion, the middle lug grooves having an angle of from 40 to 55 degrees with respect to a tire circumferential direction, and each shoulder portion provided with first shoulder lateral grooves having axially inner ends connected to the shoulder main groove, wherein first shoulder lateral grooves consist of grooves having groove widths within 2 mm. | 09-25-2014 |
| 20140283967 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion provided with an inboard shoulder main groove, an outboard shoulder groove, and a center main groove provided therebetween, to form an outboard shoulder portion, an inboard shoulder portion, an inboard middle portion, and an outboard middle portion, the inboard and outboard middle portions being formed as ribs respectively, that are provided with only sipes having widths less than 2.0 mm, wherein the sipes provided on the inboard middle portion include a full-opened sipe, the sipes provided on the outboard middle portion consisting of outer semi-opened sipes and inner semi-opened sipes, wherein the number of the inner semi-opened sipes is smaller than the number of the outer semi-opened sipes. | 09-25-2014 |
| 20140290815 | TIRE - An object of the present invention is to provide a tire exhibiting improved braking and driving performances on each of an icy/snowy road surface and a dry road surface. Specifically, the present invention provides a tire, comprising: a tread having at least two circumferential grooves formed therein; at least three rows of land portions demarcated in the ground contract surface by the at least two circumferential grooves, including a pair of outer side land portions and a central land portion other than the outer side land portions; a shoulder sipe formed in each outer side land portion such that respective ends of the sipe in the longitudinal direction thereof terminate in the outer side land portion, the shoulder sipe having in at least a portion in the depth direction thereof a bent section alternately bent on one side and the other side in the sipe width direction and continuously extending along the entire length in the sipe longitudinal direction to form a bent region; a center sipe formed in the central land portion such that each end of the sipe in the longitudinal direction thereof opens to either the circumferential groove or a lug groove, the center sipe having in at least a portion in the depth direction thereof: a bent section similar to the bent section of the shoulder sipe; and a flat section extending orthogonal to the ground contact surface of the tread, the flat section being continuous in the sipe longitudinal direction with at least one side of the bent region and extending in the sipe longitudinal direction to form a flat region. | 10-02-2014 |
| 20140290816 | PNEUMATIC RADIAL TIRE FOR A PASSENGER VEHICLE AND METHOD OF USING THE TIRE - Provided is a pneumatic radial tire for a passenger vehicle, including: a carcass constituted of plies as radially-disposed cords and toroidally provided across a pair of bead portions; and a tread, in which: the tread surface has one or more grooves formed thereon; the grooves each have a groove width of 3 mm or less; and a section width SW to an outer diameter OD of the tire have a ratio of SW/OD≦0.26 when SW<165 (mm), and SW and OD satisfy a relationship formula OD≧2.035×SW+282.3 when SW≧165 (mm). | 10-02-2014 |
| 20140290817 | PNEUMATIC TIRE - A pneumatic tire according to the present invention including a tread surface having at least one circumferential groove extending along a tire circumferential direction and a plurality of widthwise grooves opening to the circumferential groove, the widthwise grooves having a groove width wider than a groove width of the circumferential groove at least in a portion opening to the circumferential groove and, the widthwise grooves extending in a direction inclined with respect to the tire circumferential direction, wherein a recess is formed on a groove wall surface of the circumferential groove opposite to the widthwise groove. | 10-02-2014 |
| 20140305563 | PNEUMATIC TIRE - A middle land portion includes middle sipes and middle lateral grooves. A shoulder land portion includes shoulder lateral grooves and shoulder sipes. A ratio Ems/Ema is smaller than a ratio Ess/Esa. Ems denotes a total of elements of edge lengths of the middle sipes in an axial direction of the tire. Ema denotes a total of elements of edge lengths of the middle sipes and the middle lateral grooves in the axial direction. Ess denotes a total of elements of edge lengths of the shoulder sipes in the axial direction. Esa denotes a total of elements of edge lengths of the shoulder sipes and the shoulder lateral grooves in the axial direction. | 10-16-2014 |
| 20140305564 | PNEUMATIC TIRE - A pneumatic tire includes a tread having a center main groove and a pair of shoulder main grooves. A pair of middle land sections in the tread is positioned between the shoulder and center grooves. Each of the shoulder and center grooves has a groove width set in range of 7 to 9% of width of the tread footprint. An outer middle land portion is divided into first and second middle land portions by a middle narrow groove. The first land portion forms rib. The second land portion has outer middle lateral grooves connected to the center groove and the narrow groove. Each lateral groove includes first portion, second portion having the opposite inclination to the first portion and connection portion between the first and second portions. The connection portion is positioned on the center groove side from the center of the outer land portion in the axial direction. | 10-16-2014 |
| 20140305565 | MOLD COMPRISING A CAVITY FOR MOLDING A CLOSING-OFF DEVICE IN A GROOVE - A molding element for a mold for vulcanizing a tread of a tire, comprising a base able to mold part of the tread surface of the tread and a bar able to mold a groove in the tread, the bar comprising two longitudinal faces extending along its length and projecting from the base and an upper face connecting the longitudinal faces. The molding element comprises a contact edge formed by the base and the bar, intended to come into contact with another molding element to form all or part of the vulcanizing mold, and further comprising at least one recess in the bar, which opens onto the upper face and onto the contact edge, but does not open onto the longitudinal faces of the bar. | 10-16-2014 |
| 20140311641 | TREAD COMPRISING TREAD PATTERN ELEMENTS COVERED WITH AN IMPREGNATED FIBRE ASSEMBLY - A tread for a pneumatic tyre includes tread pattern elements and cuts. Each tread pattern element includes lateral faces and a contact face that comes into contact with a road surface when the tyre is being driven thereon. A boundary between the contact face and the lateral faces forms at least one edge corner. The cuts are formed as grooves and/or sipes, with the cuts being delimited by opposing lateral faces of the treat pattern elements. Each tread pattern element is formed of at least one rubber compound. When the tread is viewed in cross section in a plane normal to an axis of rotation of the tyre and passing through a contact face of a tread pattern element, at least one of the cuts adjacent to that contact face is covered at least in part with a covering layer that contains a woven or nonwoven fibre assembly. | 10-23-2014 |
| 20140318677 | PNEUMATIC TIRE TREAD - Provided is a pneumatic tire with which grip performance on a road surface having a low coefficient of friction can be improved and tread pattern durability can be further improved. A pneumatic tire tread | 10-30-2014 |
| 20140318678 | TRANSVERSE GROOVES PROVIDING VENTING IN TREADS FOR RETREADED TIRES - The present invention includes an improved tire tread having recessed lateral grooves, and a tire having the same. Particular embodiments of the tread include a tread thickness bounded depthwise by a top side configured to engage a ground surface during tire operation and a bottom side configured to attach to a tire carcass, the thickness extending laterally between a first side edge and a second side edge and longitudinally in a lengthwise direction of the tread. The tread further includes a longitudinal groove in fluid communication with the top side or the bottom side of the tread thickness and a lateral groove in fluid communication with the bottom side of the tread thickness extending from the first side edge intersecting the longitudinal groove forming a vent passageway extending from the longitudinal groove and to the first side edge. The invention includes methods of forming such treads and molds there for. | 10-30-2014 |
| 20140326380 | Pneumatic Tire - The pneumatic tire includes a carcass layer and a belt layer that is formed by laminating a pair of cross belts and a circumferential reinforcing layer and that is disposed outward in a tire radial direction from the carcass layer. Additionally, the pneumatic tire includes a plurality of circumferential main grooves extending in a tire circumferential direction, and a plurality of land portions partitioned by the circumferential main grooves in a tread portion. Also, an end portion on the outer side in the tire width direction of the circumferential reinforcing layer is on the outer side in the tire width direction of a normal line m that is drawn from a point P at an edge portion on the inner side in a tire width direction of a shoulder land portion to the carcass layer. | 11-06-2014 |
| 20140326381 | Pneumatic Tire - In the pneumatic tire, the blocks above the circumferential reinforcing layer have at least one sipe. Also, the sipe has a bent shape, in a plan view, with two flex points P | 11-06-2014 |
| 20140326382 | PNEUMATIC TIRE - A pneumatic tire comprising a tread portion provided with a middle land portion | 11-06-2014 |
| 20140326383 | CROWN FOR AN AIRCRAFT TIRE - A tire for an aeroplane and, in particular, a crown of a tire for an aeroplane, to reduce the dimensions and mass of pieces of tread in the event of accidental tire tread separation, without the use of additional devices external to the tire, which includes a tread intended to come into contact with the ground via a tread surface, and extending radially between a bottom surface and the tread surface, the tread comprising independent cavities. According to the invention, each cavity has, in the tread surface, an opening surface inscribed inside a circle, the centres (O) of the circles, circumscribed at the opening surfaces of the cavities, are distributed axially, over at least part of the axial width (l) of the tread surface, with an axial spacing (p | 11-06-2014 |
| 20140338804 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion provided with at least one circumferentially extending main groove, and at least one lateral groove extending from the main groove. The at least one lateral groove comprises a bottom, and at least one stepwise groove wall that includes at least one level part, wherein the number of level part is not more than three. In a cross-sectional view of the lateral groove, a depth Da from a ground contacting surface of the tread portion to a radially innermost level part is in a range of from 50% to 80% a maximum groove depth D4 of the lateral groove, and a width Wa from the radially innermost level part to a groove edge of the stepwise groove wall measured along in a groove width direction is in a range of from 50% to 150% the depth Da. | 11-20-2014 |
| 20140338805 | NOISE-REDUCING DEVICE FOR A TIRE - Tread having a tread surface intended to come into contact with a road surface and comprising at least one groove of width W and of depth P delimited by two walls facing one another, these walls being joined together by a groove bottom, at least one groove comprising at least one closure device for at least partially closing this groove as it passes through the contact patch, each closure device comprising at least one flexible blade of suitable thickness that allows it to flex under the effect of a circulation of liquid, this at least one flexible blade projecting from the bottom of the groove, each flexible blade being delimited by a contact wall intended to come into contact with the road surface and by end walls each facing a wall delimiting the groove and lateral walls, this tread further comprising at least one passage between the bottom of the groove and each blade of the device, this passage being intended to ensure a minimal flow of water when driving on a water-covered road surface. | 11-20-2014 |
| 20140345766 | Pneumatic Tire - The pneumatic tire | 11-27-2014 |
| 20140360639 | PNEUMATIC TIRE - Blocks are formed on a tread surface of a pneumatic tire by main grooves extending in the tire circumferential direction and lateral grooves which intersect with the main grooves. A size of the block in the tire width direction of the tread surface is set larger than a size of the block in the tire circumferential direction of the tread surface. The blocks include: center blocks which are positioned in a center region in the tire width direction; shoulder blocks which are positioned on both side regions in the tire width direction; and mediate blocks which are positioned in an intermediate region between the center blocks and the shoulder blocks. A recessed portion is formed on an approximately center portions of the shoulder blocks and the mediate blocks excluding the center blocks. | 12-11-2014 |
| 20140360640 | PNEUMATIC TIRE - Blocks are formed on a tread surface of a pneumatic tire by main grooves extending in the tire circumferential direction and lateral grooves which intersect with the main grooves. The blocks include: center blocks which are positioned in a center region in the tire width direction; shoulder blocks which are positioned on both side regions in the tire width direction; and mediate blocks which are positioned in an intermediate region between the center blocks and the shoulder blocks. The lateral groove formed between the shoulder blocks and the lateral groove formed between the mediate blocks which are positionally displaced from each other in the tire circumferential direction are connected to each other via the main groove by an auxiliary block. | 12-11-2014 |
| 20140367012 | CROWN FOR AN AIRCRAFT TIRE - A tire for an aeroplane and, in particular, to the crown of a tire for an aeroplane, having reduced dimensions and mass of the pieces of tread in the event of accidental tire tread separation, without the use of additional devices external to the tire and therefore without penalizing the payload of the aeroplane, including a tread intended to come into contact with the ground via a tread surface and comprised radially between a bottom surface and the tread surface, the tread comprising at least two circumferential ribs adjacent to at least one circumferential groove, each circumferential rib extending radially between the bottom surface and the tread surface and axially between two edge corners in the tread surface, and a crown reinforcement radially on the inside of the bottom surface, wherein a tread separation layer is arranged radially on the inside of at least one circumferential rib between the bottom surface and the crown reinforcement, axially between the two edge corners of the said circumferential rib, in the tread surface, and circumferentially over at least part of the circumference of the tire, and the radial distance (d | 12-18-2014 |
| 20140367013 | CROWN FOR AN AIRCRAFT TIRE - A tire for an aeroplane and, in particular, to the crown of a tire for an aeroplane, having reduced dimensions and mass of the pieces of tread in the event of accidental tire tread separation, without the use of additional devices external to the tire and therefore without penalizing the payload of the aeroplane, having a tread intended to come into contact with the ground via a tread surface, and extending radially between a bottom surface and the tread surface, the tread comprising at least two circumferential ribs adjacent to at least one circumferential groove, each circumferential rib extending radially between the bottom surface and the tread surface, axially between two lateral faces and circumferentially around the entire periphery of the tire, wherein the tread comprises rows of cavities formed in at least one circumferential rib and opening onto the tread surface, the rows of cavities, which are parallel to one another, are inclined with respect to the circumferential direction (XX′) of the tire at an angle (i) at least equal to 45°, and the rows of cavities are distributed circumferentially over at least part of the periphery of the tire with a circumferential spacing (p) at least equal to 0.02 times and at most equal to 0.12 times the circumferential length of the periphery of the tire. | 12-18-2014 |
| 20150013865 | PNEUMATIC TIRE - A pneumatic tire comprising one or more sipes having a depth (D) and, as seen in a widthwise section of the sipe, a perpendicular portion and a bend portion. The bend portion has, a first sub-bend point in a depth region of D/2-D/7, a main-bend point in a depth region of D/4-3D/4, and a second sub-bend point a depth region of D/2-6D/7, forming first and second inclined sections between the bend points. Each of the first and second inclined sections forms acute angles (θ1, θ2) of 30°≦θ1≦60° and 30°≦θ2≦60°, relative to a tangent of tread surface. The first inclined section has an area (a | 01-15-2015 |
| 20150027605 | THICK TREAD FOR CIVIL ENGINEERING TIRES - Tread for civil engineering tires, having blocks in the central part and edge ribs, each block having a width Ltb measured parallel to transverse edges and a width Lcb measured along the circumferential direction, wherein each edge rib has a plurality of recesses, forming housings, with a transverse width Lte and a circumferential length Lce, delimited over the whole of its height He by transversely orientated walls and a circumferentially orientated wall, having a suitable geometry to receive at least an end part of a block of the central region with a circumferential clearance Ac in the circumferential direction and a transverse clearance At in the transverse or axial direction, these clearances determined to ensure that, in the usual running conditions of the tire the end part of said block of the central region is at least partially in contact with at least one of the transversely orientated walls of each recess, thereby preventing each of the blocks, having its ends locked in said recesses, from coming into contact with the neighbouring blocks of the central row. | 01-29-2015 |
| 20150047763 | WET AND SNOW TRACTION DESIGN FOR A TIRE TREAD AND SOLUTION FOR PULL UNDER TORQUE THEREFOR - A design for a high-speed tire tread is provided that gives improved performance in both water and snow conditions. The tread region of the tire uses transversely-oriented grooves that each extend across the width of the tread region. There are no grooves or other tread features that provide substantial fluid communication between the transversely-oriented grooves. Features are also provided that decrease the pull under torque associated with such a design. | 02-19-2015 |
| 20150053320 | PNEUMATIC TIRE TREAD WITH SIPES AND MOLD BLADE - The invention provides a tire tread, the tread having at least one circumferentially extending or laterally extending main groove, the maximum radial depth of the at least one main groove defining a non-skid tread depth, the at least one main groove partially forming at least one tread element, the at least one tread element having a sipe therein, wherein the sipe has a first portion having a first and second opposed side, and a third side joining said first and second side, and said sipe further including a continuous tubular pathway bordering said first, second and third side. The invention further includes a blade for molding a tire, the blade comprising a first portion having a first and second opposed side, and a third side joining said first and second side, and said blade further including a continuous tubular pathway extending along the third side and partially extending along at least one of the first and second side. | 02-26-2015 |
| 20150053321 | TREAD PROFILE OF A VEHICLE TIRE - A tread profile of a vehicle tire has profile positives such as profile blocks or tread bands that have sipes. The sipes have an approximately Ω-shaped geometry in plan view having two axial sections which are arranged approximately in an axial direction and which are arranged on a common, imaginary straight line with a spacing (a) to one another; a central bulge arranged between the axial sections, wherein the bulge has a maximum extent (b) measured in the axial direction; and, wherein a| 02-26-2015 | |
| 20150090383 | VEHICLE TIRE - A vehicle tire ( | 04-02-2015 |
| 20150090384 | PNEUMATIC TIRE - The present invention has an object of providing a pneumatic tire having a tread pattern capable of providing both excellent drivability and a high partial wear resistance. The pneumatic tire of the present invention includes, in a tread surface, a compound groove partitioned into a first groove portion and a second groove portion by a first groove side and a second groove side, the first groove side having an oblique side portion diagonally disposed relative to a tire circumferential line in plan view, the second groove side intersecting with the oblique side portion of the first groove side at an acute angle in plan view, in which: the first groove portion and the second groove portion both have a groove depth that gradually reduces in an extending direction of the groove toward an intersection between the oblique side portion and the second groove side; and a groove wall extending from the first groove side is formed as a tapered surface mildly-sloped toward a groove bottom on the intersection side when viewed in the groove transverse direction. Further, the pneumatic tire of the present invention includes, in a tread surface, a groove partitioned by at least three groove sides in plan view, in which: one or more of groove walls extending from one of the at least three groove sides that extends in the longitudinal direction of the groove is formed as a tapered surface at least in part thereof; and the tapered surface forms an angle with a plane perpendicular to the tread surface, which varies in the extending direction of the groove side. | 04-02-2015 |
| 20150107737 | Tire Having Grooves Comprising Sipes And/Or Other Cross-Groove Negative Geometry - Various embodiments of a tire having grooves comprising sipes or other cross-groove negative geometry are disclosed. | 04-23-2015 |
| 20150107738 | Method and Tire for Improved Uniformity and Endurance of Aggressive Tread Designs Using Scalloped Layering Technique - A tire having aggressive tread features with improvements in uniformity that can also improve endurance is provided along with a method and apparatus for manufacturing such a tire. The tire and its manner of manufacture can achieve a reduction or elimination of certain non-uniformities that can occur during the molding of large tread blocks. This can improve temperature performance to provide increased tire endurance. The present invention further relates to a tire made using such a method and that may have layers of different material properties for different tire performances. In one embodiment, a layering technique that uses at least one layer extending across the full axial width of the tread and having scalloped or notched lateral or axial edges is provided. In yet another embodiment, tread blocks are built upon the scalloped layer(s) to provide more material where it is needed most to create tread features. | 04-23-2015 |
| 20150107739 | KERF STRUCTURE FOR SNOW TIRE - The present invention relates to a kerf structure for a snow tire, including a wave-shaped straight portion and an expansion portion formed expanding from the straight portion, wherein the expansion portion includes unit structures, on each of which central semi-sphere holes and polygonal forms around the semi-sphere holes form protrusions in opposite directions are formed continuously. According to the present invention, the kerf structure for a snow tire provides a symmetric shape, thereby securing uniform block rigidity regardless of the direction of the kerf, and the interlocking effect can be maximized through the combination of the protrusion shape of the polygonal shape and the embossing of the semi-sphere hole. In addition, according to the present invention, the tire performance on dry roads can be ensured by optimizing the collapse of the tire tread portion and the uniform performance of the traction can be maintained until the last stages of tread wear since the polygonal shape is maintained until the last stage of the wear even though the tire is worn. | 04-23-2015 |
| 20150107740 | KERF STRUCTURE FOR SNOW TIRE - The present invention provides a kerf structure for a snow tire, including unit structures on each of which spiral-shaped protrusions are continuously formed to be spaced a predetermined distance apart on the outer circumferential surface of a semi-cylindrical shaped column, wherein the continuously formed unit structures are arranged by alternating convex and concave portions in a zigzag formation, which is capable of optimizing the rigidity which can maintain gripping force as an original function of a kerf while ensuring a friction force generated from small blocks of a tread portion partitioned with kerfs by collapsing a block at an optimum level and further ensuring the kerf function on snow even in the last stages of tread wear by lowering the rigidity of the blocks of the tread portion. | 04-23-2015 |
| 20150114536 | Pneumatic Tire - A pneumatic tire includes a carcass layer, a belt layer that is disposed on the outer side in the tire radial direction of the carcass layer, and a tread rubber that is disposed on the outer side in the tire radial direction of the belt layer. The pneumatic tire also includes at least three circumferential main grooves extending in the tire circumferential direction, and a plurality of land portions that are defined by these circumferential main grooves. The belt layer includes an inner-side cross belt and outer-side cross belt having belt angles of not less than 51° and not more than 80° as absolute values with respect to the tire circumferential direction, the belt angles having mutually opposite signs, and a circumferential reinforcing layer having a belt angle that satisfies a range of ±5° with respect to the tire circumferential direction. | 04-30-2015 |
| 20150122384 | Synthetic Fiber Lined Tire - The present invention provides a tire with a synthetic fiber interior layer that adds flexibility and resistance to punctures from sharp objects. The present invention includes a rubber layer having an interior and exterior surface forming a substantially U-shaped tire cross section. Embedded between the interior and exterior surface of the rubber layer are radial plies extending across the tread, shoulders and sidewalls of the exterior surface. Sidewalls further include inner ends, wherein each radial ply folds back onto itself to form an enclosed bead chaffer region. An interior layer is coextensively and interiorly disposed along the radial ply. The interior layer is disposed within the tire cross section around the beads, and exits the tire cross section through the interior surface of the rubber layer and into the open interior of the tire. The interior layer is separable and freely positioned against the interior surface of the rubber layer. | 05-07-2015 |
| 20150136288 | Pneumatic Tire - In a pneumatic tire, the groove width of the connecting subsidiary grooves changes midway. The relationship between the groove width connecting to the circumferential main groove on the outer side in the tire width direction and the groove width connecting to the circumferential main groove on the inner side in the tire width direction satisfies the range of 0.30≦W1/W2≦0.70. The relationship between the groove length on the tread surface having a region of groove width and the groove length on the tread surface having a region of groove width satisfies the range of 0.25≦L2/L1≦0.65. Sipes are provided on the tread surface of the block-like land portions. The respective end portions of the sipes connect to a position where the groove width of the connecting subsidiary grooves changes to the groove width. | 05-21-2015 |
| 20150290977 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion having a pair of central block rows arranged on both sides of a tire equator. Each of the central block rows includes a plurality of central blocks arranged in a circumferential direction of the tire. Each of the central blocks includes a ground contacting face with an axially inner block edge facing the tire equator. The inner block edge includes a first inclined edge and a second inclined edge inclined in an opposite direction to the first inclined edge so that the inner block edge protrudes toward the tire equator. The first inclined edge includes a first circular arc portion with a center located on the side of the tire equator. | 10-15-2015 |
| 20150290980 | TIRE TREAD WITH IMPROVED TREAD ELEMENT EDGE - Particular embodiments of the present invention comprise a tire tread having a length and a width. The tread further includes a thickness bounded by a top side for engaging a surface during tire operation and a bottom side. Moreover, the tread includes a top side void arranged along the top side of the tread and defining a wall extending depthwise within the tread thickness from the top side. Finally, the tread includes a projection extending outwardly from the wall and to a terminal end of the projection, the projection having a top side and a bottom side defining a thickness of the projection, the projection also having a length extending longitudinally along a length of the wall, the length of the wall extending perpendicular to a depthwise direction of the tread thickness. Further embodiments comprise a tire including a tire carcass and a tread as described in the preceding paragraph. | 10-15-2015 |
| 20150298507 | TIRE TREAD WITH DIRECTIONAL DESIGN - A tread having a plurality of grooves formed on each half of the tread on each side of a midplane X-X′, each opening axially to the outside and extending axially towards the midplane X-X′ so that the plurality of grooves forms a first pattern in the overall shape of a V pointing in a groove direction Xr. The tread includes a plurality of sipes. From a certain degree of wear onwards, all or some of the sipes become enlarged forming cavities extending in an oblique direction forming a second pattern in the overall shape of a V pointing in a cavity direction Xc. Each of these cavities opens into just one of the grooves of the tread, the plurality of grooves forming, at this level of wear, the same first pattern. | 10-22-2015 |
| 20150306916 | PNEUMATIC VEHICLE TIRE FOR USE IN WINTER DRIVING CONDITIONS - A pneumatic vehicle tire is for use in winter driving conditions and defines an axial direction (aR) and a circumferential direction (uR). The pneumatic vehicle tire includes a tread having a plurality of profile blocks. The profile blocks have sipes. The tread has two axially outwardly arranged shoulder regions and further has a central tread region arranged between the two shoulder regions. The profile blocks each have two profile block edges. The profile blocks each have a surface defining a plurality of grooves therein. The grooves are arranged in parallel and extend from one of the two profile block edges to the other one of the two profile block edges. The grooves are arranged approximately in the axial direction (aR) in the central tread region and approximately in the circumferential direction (uR) in the shoulder regions. | 10-29-2015 |
| 20150321518 | PNEUMATIC TIRE - A pneumatic tire ( | 11-12-2015 |
| 20150321519 | Pneumatic Tire - A pneumatic tire is provided with at least three circumferential main grooves extending in a tire circumferential direction, and a plurality of land portions defined by the circumferential main grooves. The belt layer is formed by laminating a pair of cross belts having belt angles, as an absolute value, of not less than 10° and not greater than 45° and of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to the tire circumferential direction. In a cross-sectional view in the tire meridian direction, the distance Dcc from the circumferential reinforcing layer to the terminal wear surface on a tire equatorial plane and the distance De from an end portion of the circumferential reinforcing layer to the terminal wear surface have the relationship such that De/Dcc≦0.94. | 11-12-2015 |
| 20150321520 | PNEUMATIC TIRE FOR VEHICLE - A pneumatic tire for a vehicle is herein disclosed. The pneumatic tire includes a tread, side walls, and beads. A plurality of tread blocks and grooves are formed in the tread. Kerfs are formed in the tread blocks. Each kerf face of each of the kerfs includes a flange portion, a plurality of concave kerf portions, and a plurality of convex kerf portions. The flange portion is formed in the outermost portion of the tread. The concave kerf and convex kerf portions are connected to the flange portion, and are alternately formed in depth and lengthwise directions of the kerf. The concave kerf portions correspond to opposite convex kerf portions. The convex kerf portions correspond to opposite concave kerf portions. The concave and convex kerf portions are configured such that the protrusion directions of the concave and convex kerf portions are opposite to each other. | 11-12-2015 |
| 20150328930 | Pneumatic Tire - A pneumatic tire is provided with at least three circumferential main grooves extending in the circumferential direction of the tire and a plurality of land portions defined by the circumferential main grooves. Additionally, the belt layer is formed by layering a pair of cross belts having a belt angle, as an absolute value, of no less than 10° and no more than 45° and having a belt angles of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to a circumferential direction of the tire. A tire ground contact width (Wg) and a carcass cross-sectional width (Wca) of a carcass layer have a relationship such that 0.64≦Wg/Wca≦0.84. | 11-19-2015 |
| 20150328933 | Pneumatic Tire - In a cross-sectional view of a pneumatic tire in the tire meridian direction, land sections, which are located on the inner side of left and right outermost circumferential main grooves in the tire width direction, have a first profile which protrudes outward in the tire radial direction. In addition, shoulder land sections, which are located on the outer side of the right and left outermost circumferential main grooves in the tire width direction, have a second profile which protrudes inward in the tire radial direction within a ground contact surface. In addition, the distance between a line extending from the first profile in the ground contact surface of the shoulder land section and the second profile in the tire radial direction increases toward the outer side in the tire width direction. | 11-19-2015 |
| 20150328935 | Sipe Reinforcement - Provided is a tire, having a circumferential direction, an axial direction, and a radial direction, the tire comprising, a tread surface comprising a groove which defines a block; a sipe formed in the block, the sipe being defined by a depth, a width and a length each of the depth, width, and length being defined by elongated surfaces comprising, a first elongated surface, and a second elongated surface facing the first elongated surface and offset therefrom by the sipe width. The tire may comprise projections or an array of projections having any of various properties. | 11-19-2015 |
| 20150328936 | TIRE TREADS WITH REDUCED UNDERTREAD THICKNESS - The invention comprises a tire tread, and tire, and a method of forming a tire having the tire tread. Particular embodiments of the tire tread comprise a tread thickness bounded by a top side and a bottom side and opposing lateral sides and a groove extending into the tread thickness from the tread top side and terminating within a thickness of the tread at a groove bottom, the groove having a width defined by a pair of opposing sides and the groove bottom being spaced from the bottom side of the tread by an undertread thickness. Such tire tread further includes a plurality of strengthening members forming protrusions extending into the groove from the groove bottom and from at least one side of the pair of opposing groove sides, the plurality of strengthening members being arranged along a length of the groove. | 11-19-2015 |
| 20150336428 | Pneumatic Tire - The pneumatic tire includes at least three circumferential main grooves extending in the tire circumferential direction and a plurality of land portions partitioned and formed by the circumferential main grooves. Also, the belt layer is formed by laminating a pair of cross belts having a belt angle, as an absolute value, of not less than 10° and not more than 45° and of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to the tire circumferential direction. Also, when viewed as a cross-section from the tire meridian direction, the distance Dcc on the tire equatorial plane from the circumferential reinforcing layer to the wear end surface and the distance De from the end portion of the circumferential reinforcing layer to the wear end surface have a relationship such that 1.06≦De/Dcc. | 11-26-2015 |
| 20150343848 | HEAVY-DUTY PNEUMATIC TIRE - A heavy-duty pneumatic tire includes a tread having main grooves and lateral grooves connecting the main grooves such that each main groove has zigzag pattern extending continuously in tire circumferential direction and that the lateral grooves divide portion between the main grooves into blocks. Each main groove has a groove periphery on block side such that the groove periphery has inward crests protruding toward the block side and outward crests protruding in the opposite direction and alternating with the inward crests, the lateral grooves connect the inward crests and incline at angle α in range of 10 to 20 degrees with respect to tire axial direction, and each block is formed to have a ground-contact surface which has substantially hexagonal shape and ratio W | 12-03-2015 |
| 20150352903 | PNEUMATIC TIRE - In a pneumatic tire, blocks | 12-10-2015 |
| 20150352904 | WINTER TYRE - A winter tyre is described having a tread band wherein a plurality of blocks configured to obtain optimal performance both on snow-covered roads and on dry and wet roads in specific conditions of use (in particular during acceleration, braking or cornering with high power vehicles). Each of the aforementioned blocks has at least one sipe that defines two adjacent block portions in the respective block, each block portion having a respective surface facing the sipe. The surface has a radially outer portion having a profile which is substantially undulating, a radially inner portion also having a profile which is substantially undulating and an intermediate portion arranged between the radially outer portion and the radially inner portion and having a profile which is substantially rectilinear. | 12-10-2015 |
| 20150352905 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion provided with a center main groove on the tire equator and a shoulder main groove on each side of the center main groove. The center main groove and the shoulder main groove extend zigzag and continuously in the tire circumferential direction so that a crown land portion defined between the center main groove and the shoulder main groove has an axial width alternately increasing and decreasing along the tire circumferential direction. The crown land portion is provided with a shallow crown circumferential groove extending zigzag and continuously in the tire circumferential direction, and crown sipes extending from the center main groove to the shoulder main groove across the shallow crown circumferential groove. Zigzag apexes of the shallow crown circumferential groove are respectively positioned between the crown sipes. | 12-10-2015 |
| 20150352906 | PNEUMATIC TIRE - A pneumatic tire, including: a lug groove opening at an end of a ground contact surface of a tread portion and extending toward the tire equatorial plane of the ground contact surface to terminate before reaching the tire equatorial plane; a communication groove making a corresponding pair of the lug grooves located on respective sides of the tire equatorial plane communicate with each other; and at least one widthwise groove, formed in a ground contact surface region demarcated between the end of the ground contact surface and the tire equatorial plane and between one pair and another pair adjacent thereto in the tread circumferential direction of the lug grooves and the communication groove communicating therewith, such that the widthwise groove extends in a direction of a tread width and an end thereof on the outer side in the tread width direction terminates within the ground contact surface region. | 12-10-2015 |
| 20150367684 | PNEUMATIC RADIAL TIRE FOR PASSENGER VEHICLES - A pneumatic radial tire for passenger vehicles. When the tire is fitted on a rim and having an internal pressure of 250 kPa or higher, the section width SW and the outer diameter OD of the tire satisfy a predetermined relationship. A center land row is a rib-shaped land, and has center lug grooves each opening into one of the two circumferential main grooves and terminating within the center land row. Outer land rows are rib-shaped lands, each outer land row having outer lug grooves and outer auxiliary lug grooves. The outer lug grooves each open into a ground contact end in the tire width direction and terminate within the outer land row. The outer auxiliary lug grooves open into the circumferential main groove defining the outer land row, has a groove width smaller than the groove width of the outer lug grooves, and extend in the tread width direction. | 12-24-2015 |
| 20150375568 | Pneumatic Tire - A pneumatic tire includes at least three circumferential main grooves extending in the tire circumferential direction, and a plurality of land portions partitioned by the circumferential main grooves. The belt layer is formed by laminating a pair of cross belts having a belt angle, as an absolute value, of not less than 10° and not more than 45° and mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to a tire circumferential direction. Also, when viewed as a cross-section from the tire meridian direction, when the wear end surface of the circumferential main grooves is drawn, the distance Dcc on the tire equatorial plane from the circumferential reinforcing layer to the wear end surface and the distance De from the end portion of the circumferential reinforcing layer to the wear end surface have a relationship such that De/Dcc≦0.94. | 12-31-2015 |
| 20150375571 | Pneumatic Tire - A pneumatic tire is provided where, in a tread center portion, there are at least three pitch variations in terms of pitch length in the circumferential direction of the tire, and, taking n as the pitch count, the pitch lengths Pc Pc1, Pc2, Pc3, . . . , Pcn in order from longest to shortest satisfy the relationships Pc1/Pc2≧Pc2/Pc3≧, . . . , ≧Pcn−1/Pcn and Pc1/Pc2>Pcn−1/Pcn. | 12-31-2015 |
| 20160009137 | Pneumatic Tire | 01-14-2016 |
| 20160023520 | PNEUMATIC TIRE - A pneumatic tire includes a narrow groove on a tread surface, inclined from the tire circumferential direction, groove width being smaller than groove depth, and an air inflow part opening to the tread surface and formed on one of the opposing groove walls. At least one end of the narrow groove is a terminal end. The air inflow part is disposed at the terminal end of the narrow groove, and in a development plan view of the tread surface, ∠XOY is an acute angle, where O is an intersection between a widthwise center line of the air inflow part and a groove widthwise center line of the narrow groove, X is a terminal endpoint of the air inflow part along the widthwise center line of the air inflow part, and Y is a lengthwise center point of the narrow groove along the groove widthwise center line. | 01-28-2016 |
| 20160023521 | PNEUMATIC TIRE - The present invention is directed to a pneumatic tire | 01-28-2016 |
| 20160059639 | AIRCRAFT TIRE - An object is to, in an aircraft tire, promote heat dissipation from circumferential direction grooves of a tread and improve durability of the tire. | 03-03-2016 |
| 20160068024 | Pneumatic Tire - The present technology relates to a pneumatic tire in which a plurality of small blocks is delineated and formed by a plurality of rectilinear circumferential narrow grooves and a plurality of widthwise narrow grooves that communicate with the circumferential narrow grooves, and small block rows with the small blocks aligned along a tire circumferential direction are formed between adjacent circumferential narrow grooves. Each of the small blocks has a surface area differing from that of at least one small block that belongs to an adjacent small block row on at least one side with respect to a tire width direction and has an overlapping tire circumferential directional region. The small blocks have surface areas of no less than 20 mm | 03-10-2016 |
| 20160082780 | PNEUMATIC TIRE - A pneumatic tire | 03-24-2016 |
| 20160089938 | PNEUMATIC TIRE - A pneumatic tire includes a tread having crown grooves, shoulder grooves, middle lands, and shoulder lands. Each middle land has middle blocks and middle inclined lateral grooves such that the middle inclined lateral grooves are inclining relative to tire axial direction and connecting a crown groove and a shoulder groove, each shoulder land has shoulder blocks and shoulder inclined lateral grooves such that the shoulder inclined lateral grooves are inclining relative to the axial direction and connecting a shoulder groove and a tread edge, and each middle inclined lateral groove is positioned adjacent to a shoulder block such that each middle inclined lateral groove and the shoulder block are sandwiching the shoulder groove and overlapping in tire circumferential direction and have a ratio Lov/Lmg ranging from 0.7 to 1.0, where Lov represents tire circumferential overlapping length Lov, and Lmg represents tire circumferential length Lmg of the middle inclined lateral grooves. | 03-31-2016 |
| 20160089939 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion provided with a circumferentially and continuously extending zigzag shoulder main groove located adjacent to a tread edge, a shoulder lateral groove extending axially outwardly from the shoulder main groove and a central lateral groove extending axially inwardly from the shoulder main groove. The shoulder main groove includes an inner corner portion protruding axially inwardly. The central lateral groove includes a first groove portion, a second groove portion and a confluence portion at which the first groove portion and the second groove portion meet. The confluence portion of the central lateral groove is communicated with the inner corner portion of the shoulder main groove. The shoulder lateral groove is located so that an extended portion in which the shoulder lateral groove is extended axially inwardly overlaps with the confluence portion at least partially. | 03-31-2016 |
| 20160101655 | PNEUMATIC TIRE - A pneumatic tire is provided with a tread having a shoulder portion isolated by a main groove, and a slit formed on the shoulder portion, wherein a first tapered portion is formed on a side wall of the slit which comes into contact with the ground first when the tire is rotating, and a second tapered portion is formed on the side wall of the slit which comes into contact with the ground later, an end of the first tapered portion on the main groove side is located at a position closer to the main groove than the end of the second tapered portion on the main groove side, and the second tapered portion is formed so that a width on an opening end of the slit opening at a contact surface is wider than the width of the portion where the second tapered portion is not formed. | 04-14-2016 |
| 20160114630 | PNEUMATIC TIRE - A pneumatic tire includes: a plurality of land portions; and in at least one land portion of the plurality of land portions, a sipe extending in the tread width direction, of which ends open at the circumferential grooves or the tread ends. The sipe has at least one bent portion extending continuously in the extending direction of the sipe from one of the end regions of the sipe to the other end region in the depth direction of the sipe. The at least one bent portion is located on the outer side in the tire radial direction in the center region than in the end regions. | 04-28-2016 |
| 20160114631 | PNEUMATIC TIRE WITH SIPE ACTIVATION BOOSTERS - A tread for a pneumatic tire includes a plurality of trapezoidal channels, each trapezoidal channel extending circumferentially from a first end to a second end, the first end being wider than the second end, a sipe extending laterally adjacent the second ends of the trapezoidal channels, and a plurality of rectangular channels, each rectangular channel extending circumferentially from a first end to a second end, the first ends of the rectangular channels being adjacent the sipe. | 04-28-2016 |
| 20160121658 | TREAD FOR A SNOW TIRE - A pneumatic tire has a radially outer tread. The tread has a plurality of circumferential grooves, a plurality of lateral grooves, and a plurality of shoulder grooves. The tread includes bottoms and sides of each circumferential groove being textured for improving snow traction, bottoms and sides of each lateral groove being textured for improving snow traction, and bottoms and sides of each shoulder groove being textured for improving snow traction. | 05-05-2016 |
| 20160129733 | PNEUMATIC TIRE - Provided is a pneumatic tire being excellent in property of protecting the tire from a mounted tire chain or being excellent in property of discharging mud from grooves formed on the tire. | 05-12-2016 |
| 20160137003 | PNEUMATIC TIRE - On a tread portion, a plurality of blocks are formed by a plurality of main grooves annularly continuously extending in a tire circumferential direction, and a plurality of transverse grooves extending in a tire width direction, intersecting these main grooves. Each block has projections on side surfaces, which form each transverse groove, at corner regions thereof. | 05-19-2016 |
| 20160152087 | PNEUMATIC TIRE | 06-02-2016 |
| 20160152091 | PNEUMATIC TIRE | 06-02-2016 |
| 20160152092 | PNEUMATIC TIRE | 06-02-2016 |
| 20160167444 | AIRCRAFT TIRE | 06-16-2016 |
| 20160176236 | PNEUMATIC TIRE | 06-23-2016 |
| 20160176237 | PNEUMATIC TIRE | 06-23-2016 |
| 20160185159 | PNEUMATIC TIRE - A pneumatic tire includes plural land portions that are provided at a tread and that are partitioned by plural circumferential direction grooves that extend along a tire circumferential direction. A lug groove is provided at at least one land portion among the plural land portions and crosses the land portion in a tire width direction. A fine groove is provided at a groove bottom portion of the lug groove, has a narrower groove width than the lug groove, and has a groove bottom face formed with a circular arc shaped profile when viewed in cross-section at right angles to a groove length direction. A coupling curved face joins the groove bottom face and a groove side face at a length direction end portion of the fine groove, to a groove side face of the circumferential direction grooves. | 06-30-2016 |
| 20160185161 | PNEUMATIC TIRE AND MOLDING DIE THEREOF - A sipe is provided to a land portion provided to a tread of a pneumatic tire. The sipe includes a slit having a width of 0.6 mm or less. The slit has an arithmetic surface roughness Ra of 1.6 μm or less on a pair of opposing wall surfaces. A molding die of a pneumatic tire includes a sipe plate to shape a sipe. The sipe plate includes a thin plate having a thickness of 0.6 mm or less. The thin plate has an arithmetic mean roughness Ra of 1.8 μm or less on a pair of side surfaces. Owing to this configuration, deformation of a land portion when making contact with the ground is suppressed regardless of a sipe provided to the land portion. | 06-30-2016 |
| 20160185162 | PNEUMATIC TIRE AND MOLDING DIE THEREOF - A sipe is provided to a land portion provided to a tread of a pneumatic tire. The sipe is formed of a wide portion having a groove width W | 06-30-2016 |
| 20160193884 | PNEUMATIC TIRE | 07-07-2016 |
| 20160193885 | PNEUMATIC TIRE | 07-07-2016 |
| 20170232800 | Pneumatic Tire | 08-17-2017 |
| 20180022162 | Pneumatic Tire | 01-25-2018 |
| 20180022163 | Tire With A Directional Tread Comprising Curved Blocks With Incisions | 01-25-2018 |
| 20180022164 | TIRE | 01-25-2018 |
| 20180022166 | TIRE TREADS HAVING TREAD ELEMENTS WITH INCLINED LATERAL SIDES | 01-25-2018 |
