| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 152209150 | Characterized by shape of upper surface of tread element (e.g., block with upper convex surface, etc.) | 45 |
| 20080257467 | Pneumatic Tire - [Subject] To provide a pneumatic tire whose snow performance is improved without affecting its dry performance. | 10-23-2008 |
| 20090272473 | PNEUMATIC TIRE - Provided is a pneumatic tire having a tread surface ( | 11-05-2009 |
| 20100000642 | PNEUMATIC TIRE - A pneumatic tire exhibiting high traction performance. A center circumferential groove ( | 01-07-2010 |
| 20100000643 | TIRE TREAD COMPRISING BLOCKS WITH STEPPED SIDEWALLS - A tire includes a tread band having a tread pattern defined by a plurality of grooves of substantially circumferential orientation and by a plurality of grooves of substantially transverse orientation, which grooves delimit a plurality of rubber blocks arranged in a plurality of rows of substantially circumferential orientation, each of the blocks being delimited by a contact face and at least three side faces, wherein at least some of the blocks include at least one side face of substantially transverse orientation provided with at least one irregularly shaped step having an upper face and a front face. | 01-07-2010 |
| 20100089509 | PNEUMATIC TIRE - The present invention provides a pneumatic tire which suppresses pattern noise and uneven wear, with improving both drainage properties and driving stability at the same time. The pneumatic tire, having in each half-section obtained by dividing a tread portion | 04-15-2010 |
| 20100101695 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion ( | 04-29-2010 |
| 20100116392 | PNEUMATIC TIRE - A pneumatic tire includes a pair of first circumferential main grooves formed in the center region of a tread, a pair of second circumferential main grooves formed respectively outward of the corresponding first main grooves, a plurality of first lug grooves which each extend from one of the two shoulder ends of the tread inward in the tire-width direction and communicate with the corresponding first main groove, a plurality of second lug grooves alternately arranged in the tire circumferential direction which each extend from one of the two shoulder ends of the tread inward in the tire-width direction but do not communicate with the corresponding first main groove, a center rib defined between the pair of first main grooves and extends continuously in the tire circumferential direction, a shoulder block row defined between each of the second main grooves and a corresponding one of the shoulder ends and includes a plurality of blocks, and an intermediate block row defined between each of the first main grooves and a corresponding one of the second main grooves. Each intermediate block row includes long blocks each of which has a tire-circumferential-direction length equivalent to the total length of each two blocks included in the corresponding shoulder block row. | 05-13-2010 |
| 20100170601 | Pneumatic Tire - In a pneumatic tire, at least one groove wall face of at least one of the grooves includes a portion located at the tread surface side and a portion located at a groove bottom side with respect to the portion located at the tread surface side, the portion located at the tread surface side includes a plane face that forms a right angle or an obtuse angle with respect to the land portion surface, and a bottom face extending outward in a width direction of the groove from an end at the groove bottom side of the plane face, the portion located at the groove bottom side has an inclined face extending from the groove bottom in the width direction toward the outside of the bottom face, the inclined face and the bottom face form therebetween a recess portion recessed outward in the width direction of the groove. | 07-08-2010 |
| 20100200137 | TIRE TREAD SURFACE DESIGN - A tire tread provided with a plurality of grooves delimiting blocks and/or ribs and having an average depth H. This tread has a tread surface designed to come into contact with the roadway only along a plurality of raised contact lines. The raised contact lines intersect one another to delimit, on the tread surface, a plurality of contiguous first cavities each formed by a wall which is recessed radially inwardly from the tread surface. The walls of the first cavities are intersected by respective second cavities situated radially. | 08-12-2010 |
| 20100206445 | PNEUMATIC TIRE - A pneumatic tire comprises a tread provided with at least two circumferential main grooves and a rib defined in a tread central portion by the circumferential main grooves, wherein an auxiliary groove is formed in the tread central portion, the auxiliary groove having a circumferential groove portion extending in a tire equator direction and an axial groove portion extending from an end of the circumferential groove portion in such a manner that the axial groove portion is bent at an acute angle to the circumferential groove portion, and at least an end of the auxiliary groove is open into the circumferential main groove. | 08-19-2010 |
| 20100236678 | OFF-ROAD PNEUMATIC TIRE - To improve straight running stability on an off-road. An off-road pneumatic tire | 09-23-2010 |
| 20100236679 | Pneumatic Tire - A pneumatic tire comprises grooves | 09-23-2010 |
| 20100282387 | TIRE VULCANIZING MOLD AND TIRE PRODUCED WITH THE TIRE VULCANIZING MOLD - A tire vulcanizing mold has two or more mold segments with forming surfaces jointly defining the tread rubber profile of a tire to be vulcanized and with a surface area with elevations, such as webs, wherein the surface area forms the circumferential tread rubber profile area of the tire and wherein the elevations impress the depressions, such as grooves, in the tread of the tire. A tire vulcanized with the vulcanizing mold may be a motorcycle tire or an ultra-high performance tire. Certain regions of the forming surfaces of the mold segments that form the tread rubber profile are provided with a roughness, such that those regions of the vulcanizing mold which form the circumferential tread rubber profile area are provided with the roughness. The elevations, on the other hand, which impress the depressions are not provided with this roughness but they are instead smooth. | 11-11-2010 |
| 20100319826 | PNEUMATIC TIRE FOR RUNNING ON ROUGH TERRAIN - A pneumatic tire is provided in the tread portion with tread blocks capable of improving running performance on rough terrain, wherein a degree of circularity Eb of a contour shape of a section of the tread block taken parallel with the top surface of the tread block at a block foot position is more than a degree of circularity Et of a contour shape of the top surface. The degree of circularity is: 4×pi×S/L2, wherein, pi is the circumference ratio, S is an area of the contour shape, and L is a circumferential length of the contour shape. The block foot position is defined as being spaced apart from a tread bottom by 10% of a height of the tread block from the tread bottom. | 12-23-2010 |
| 20110041972 | PNEUMATIC TIRE - A pneumatic tire comprises: an axially inner circumferential row of crown blocks disposed on each side of the tire equator; and an axially outermost circumferential row of shoulder blocks disposed axially outside thereof. The crown blocks are circumferentially divided by alternate first and second crown axial grooves. The shoulder blocks are circumferentially divided by alternate first and second shoulder axial grooves. The first shoulder axial groove has a groove width of not less than 3.5 mm. The first crown axial groove has a groove width of not less than 2.0 mm. The second shoulder axial groove comprises an axially innermost sipe-like part having a groove width of 0.5 to 2.0 mm, and an axially outer main part having a groove width of not less than 3.5 mm. The second crown axial groove comprises an axially innermost sipe-like part having a groove width of 0.5 to 2.0 mm, and an axially outer main part having a groove width of not less than 2.0 mm. | 02-24-2011 |
| 20110088821 | PNEUMATIC TIRE - A pneumatic tire has tread blocks ( | 04-21-2011 |
| 20120067477 | TIRE TREAD HAVING ASYMMETRIC CHAMFERING - A pneumatic tire having an asymmetrically chamfered tread that promotes desired plysteer residual aligning torque and/or plysteer residual cornering force. The tire comprises a tread having a set of first blocks on a first side of an equatorial plane, and a set of second blocks on a second side of the equatorial plane. The first and second blocks are defined at least in part by a top surface, one or more circumferentially extending grooves, and a plurality of laterally extending grooves. The laterally extending grooves define leading edges and trailing edges of the blocks. The boundaries between the leading edges and top surfaces of a plurality of the first blocks, and between the trailing edges and top surfaces of a plurality of the second block, are chamfered. The boundaries between the trailing edges and top surfaces of the first blocks, and between the boundaries between the leading edges and top surfaces of the second blocks, are substantially unchamfered. | 03-22-2012 |
| 20120080129 | PNEUMATIC TIRE - A pneumatic tire including rib-like land portions partitioned by a plurality of main grooves extending in a tire circumferential direction and/or block-like land portions partitioned by the plurality of main grooves and a plurality of lug grooves intersecting the main grooves in a tread surface. A plurality of protrusions are provided on a surface of the land portions, and at least two types of the protrusions, having different surface areas, are provided. Moreover, at least a majority of the protrusions adjacent to a small protrusion having a relatively small surface area are large protrusions having a relatively large surface area. | 04-05-2012 |
| 20120160382 | PNEUMATIC TIRE - A pneumatic tire including a plurality of circumferential main grooves extending in a tire circumferential direction, a plurality of land portions partitioned by the circumferential main grooves, a narrow groove extending in the tire circumferential direction and disposed in an edge portion of a road contact surface side and an outer side in the tire width direction of the shoulder land portion on an outermost side in a tire width direction, and a narrow rib that is partitioned by the narrow groove. The narrow rib includes an offset portion having a road contact surface offset inward in a tire radial direction from the road contact surface of the shoulder land portion, and a protrusion protruding in the tire radial direction from the offset portion, extending in the tire circumferential direction, and having a top surface that is substantially flush with a profile line of the shoulder land portion. | 06-28-2012 |
| 20120227882 | PNEUMATIC TIRE - A pneumatic tire | 09-13-2012 |
| 20120318420 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion, at least two circumferentially and continuously extending longitudinal grooves being provided with the tread portion, a land portion divided between the longitudinal grooves, a plurality of lateral grooves being provided with the land portion, each lateral grooves with one end communicating with one of the longitudinal grooves and the other end extending toward a tire equator, the longitudinal groove with a groove wall to which lateral grooves are connected, in each section between lateral grooves adjacent to a circumferential direction of the tire, the groove wall having a protruded portion and a dent portion being formed the nearest side of the tire equator, the protruded portion inclined with respect to the circumferential direction of the tire so as to gradually reduce a width of the longitudinal groove toward at least one lateral groove. | 12-20-2012 |
| 20130048170 | Pneumatic Tire - A tread portion includes land portions partitioned by circumferential grooves extending in a tire circumferential direction and lateral grooves extending in a tire width direction. At least one land portion comprises an annular sipe. A surface of a portion of the land portion surrounded by the annular sipe includes at least one inner side inclining face that inclines toward the annular sipe. A surface of a portion of the land portion along a periphery of the annular sipe includes at least one outer side inclining face that inclines toward the annular sipe. The inner side inclining face and the outer side inclining face are disposed so as not to be opposite each other. A step is formed between a first edge of the annular sipe of the inner side inclining face or the outer side inclining face and a second edge of the annular sipe opposing the first edge. | 02-28-2013 |
| 20130092301 | PNEUMATIC TIRE - A pneumatic tire, includes, in a tread portion, a pair of circumferential main grooves extending and a land portion provided between the pair of circumferential main grooves and extending in the tire circumferential direction. The land portion includes a bulging portion bulging in a second arc shape in a tire radial direction as a sectional outline of a tread surface of the land portion and chamfered portions connected to the bulging portion and extending straight toward respective groove walls of the circumferential main grooves. A portion of the bulging portion bulges in the tire radial direction with respect to a virtual tread profile line which is determined by a first arc shape in a sectional shape of the tread portion. A maximum bulging amount is 0.1 to 0.8 mm. The virtual tread profile line extends across the chamfered portions. | 04-18-2013 |
| 20130306207 | PNEUMATIC TIRE FOR RUNNING ON ROUGH TERRAIN - A pneumatic tire for rough terrain comprises a tread portion with a tread pattern provided with a block having a height of from 10 to 19 mm, the block comprising a top face and a sidewall face extending radially inwardly from a peripheral edge of the top face, the top face being a polygonal shape with a plurality of sides equal to or more than four, the sidewall face comprising a plurality of slant surfaces extending radially inwardly away from the sides, respectively, wherein each slant surface comprises a radially outer portion and a radially inner portion, the radially outer portion has a flat plane, the radially inner portion comprises a first plane and a second plane laterally adjacent to said first plane, and the first plane and second plane cross each other so that said radially inner portion dents inwardly of the block. | 11-21-2013 |
| 20140166169 | PNEUMATIC TIRE - A pneumatic tire has an inboard tire tread edge and an outboard tire tread edge positioned towards the center of a vehicle body and away from the center of the vehicle body, respectively. The tire tread is divided by circumferentially continuously extending main grooves into a center land portion, a pair of middle land portions and a pair of shoulder land portions. In a meridian section of the tire, a center profile of a tread of the center land portion and a middle profile of a tread of each of the middle land portions protrude convexly, radially outwardly from a virtual tread profile defined as smoothly passing through the axial ends of the treads of the center land portion and the middle land portions. The peak of the center profile and the peak of the middle profile are off-centered toward the outboard tire tread edge. | 06-19-2014 |
| 20140305562 | TIRE AND MOLD FOR MOLDING TIRE - The present invention provides a tire at least comprising: a tread portion having a ground contact surface; and a large number of projections formed in at least a portion of the ground contact surface so as to each have a radius of curvature in a predetermined range. The present invention also provides a mold for molding a tire, comprising: a ground contact surface molding surface; and a large number of recessed portions formed in at least a portion of the ground contact surface molding surface so as to each have a radius of curvature in a predetermined range. | 10-16-2014 |
| 20140311640 | PNEUMATIC TIRE - A pneumatic tire is provided with a center land section formed between center main grooves, a pair of intermediate land sections formed between shoulder main grooves and the center main grooves, and a pair of shoulder land sections formed on the outside of the shoulder main grooves in a tire width direction. The center land section and the intermediate land sections swell outwardly in a tire radial direction from a basic tread profile line that smoothly connects ground contact surfaces of the pair of shoulder land sections. The radius of a peak section of the intermediate land sections is equal to or smaller than the radius of a peak section of the center land section, and the thickness of the intermediate land sections is greater than the thickness of the center land section. | 10-23-2014 |
| 20140318676 | TIRE - The tire includes a tread portion to come into contact with a road surface. A lateral groove portion extending in a direction intersecting with a tire circumferential direction, and a land portion partitioned by the lateral groove portion are formed in the tread portion. The land portion includes: a ground-contact face to come into contact with the road surface; a side face formed on an outer side in a tread width direction of the land portion; a lateral groove face constituting a groove wall of the lateral groove portion formed on one end in the tire circumferential direction of the land portion; and a tapered face which meets the ground-contact face, the side face, and the lateral groove face in a corner portion formed by the ground-contact face, the side face, and the lateral groove face. | 10-30-2014 |
| 20140332133 | HEAVY DUTY TIRE - Shoulder drop wear and triangular wear are prevented. A heavy duty tire which includes a shoulder block includes a first arc portion having a radius of curvature, in which a tread contour includes an arc center at a tire equatorial surface at a 5% internal pressure state; and a second arc portion having a radius of curvature of which intersects with the first arc portion at an intersection. An arc center of the second arc portion is located on a radial line passing through the intersection. A ratio of the radii of curvature is between 0.2 and 0.5. A ratio between a tire radial direction distance from an equatorial point to a tread edge and a radial direction distance from the equatorial point to a virtual tread edge on a line extending from the first arc portion is equal to or higher than 0.5 or lower than 1.0. | 11-13-2014 |
| 20140345764 | TREAD WITH ARIABLE CHAMFERS - Tread having a plurality of generally circumferentially orientated grooves delimiting a plurality of relief elements, this tread further comprising a plurality of cut-outs in the form of transversely orientated grooves and/or slits, each relief element comprising a contact face intended to come into contact with the road and lateral faces cutting this contact face along edges intended to come into contact with a road during running, this tread having chamfers on at least a plurality of transverse edges of the relief elements, this tread having, in straight-line running, a total contact surface S comprising a part Sc in which all the transverse edges have chamfers and a part Snc in which all the transverse edges are free of chamfers, this tread having, in a cornering manoeuvre corresponding to a transverse acceleration of 0.3 g (where g is the acceleration due to gravity), a total footprint surface S* formed by a part Sc* comprising chamfers on all the transverse edges of its relief elements and a part Snc* free of any chamfer, this tread being such that the ratio Snc/Sc is equal to not more than 2% and that the ratio Snc*/Sc* is equal to or greater than 10%. | 11-27-2014 |
| 20140345765 | TIRE AND TIRE FORMING MOLD - A tire of the present invention has a roughness motif maximum length A in a predetermined range on at least a part of the tread surface. In addition, a tire forming mold of the present invention has a roughness motif maximum length A in a predetermined range on at least a part of the tread-surface molding surface. | 11-27-2014 |
| 20140352862 | TIRE AND TIRE FORMING MOLD - The present invention provides a tire that has a maximum profile peak height Rp in a predetermined range on at least a part of the tread surface. In addition, a tire forming mold of the present invention has a maximum profile peak height Rp in a predetermined range on at least a part of the tread-surface molding surface. | 12-04-2014 |
| 20140360638 | TIRE AND TIRE FORMING MOLD - The present invention provides a tire with improved on-ice performance and on-snow performance and a tire forming mold used for manufacturing (forming) the tire. The present invention provides a tire that has a large number of protrusions formed on at least a part of a tread surface and partitioned by recesses extending in a mesh pattern, in which each recess has a recess width of 50 μm or less. A tire forming mold that has a tread-surface molding surface for molding the tread surface of the tire, with a large number of recesses partitioned by protrusions extending in a mesh pattern formed on at least a part of the tread-surface molding surface, in which each protrusion has a protrusion width of 50 μm or less. | 12-11-2014 |
| 20140367010 | TIRE AND TIRE FORMING MOLD - A tire of the present invention has surface properties at which the kurtosis of the assessed profile Rku is 2 or less on at least a part of the tread surface of the tread portion. In addition, a tire forming mold of the present invention has a kurtosis of the assessed profile Rku of 2 or less on at least a part of the tread-surface molding surface. | 12-18-2014 |
| 20150020939 | 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. | 01-22-2015 |
| 20150290978 | PNEUMATIC TIRE - A pneumatic tire, comprising: a tread surface; a plurality of grooves formed in the tread surface, including a plurality of widthwise grooves each extending from a corresponding tread end on the inner side in the tread width direction and a plurality of circumferential grooves each extending in the tread circumferential direction to intersect the widthwise grooves; blocks demarcated by the plurality of grooves; and a chamfered portion formed at a corner, on the trailing edge side and on the outer side in the tread width direction, of each block. | 10-15-2015 |
| 20150306917 | TIRE WITH ROUNDED TREAD ELEMENTS - A tire having a circumferential tread includes a plurality of tread elements. At least one tread element has a sipe disposed therein. The sipe is defined by a first sipe wall, a second sipe wall, and a curved sipe surface extending from the first sipe wall to a top surface of the at least one tread element. | 10-29-2015 |
| 20150321515 | Pneumatic Tire - A pneumatic tire includes at least three circumferential main grooves that extend in the tire circumferential direction, and land portions that are partitioned and formed by these circumferential main grooves. In addition, a belt layer is formed by laminating a pair of cross belts each having a belt angle of not less than 10° and not more than 45° as an absolute value and having 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 addition, in a cross-sectional view taken along the tire meridian direction, a diameter D | 11-12-2015 |
| 20160009142 | PNEUMATIC TIRE | 01-14-2016 |
| 20160009143 | TIRE | 01-14-2016 |
| 20160016437 | TIRE - This tire improves high traction performance over an extended period of time and/or improves control performance while maintaining traction performance. This tire includes a tread with blocks formed thereon, protrusions ( | 01-21-2016 |
| 20160039249 | PNEUMATIC TIRE - Provided is a pneumatic tire | 02-11-2016 |
| 20160068023 | Pneumatic Tire - This pneumatic tire ( | 03-10-2016 |
| 20160121657 | PNEUMATIC TIRE - A pneumatic tire includes: a tread portion; three or more main grooves provided on the tread portion at intervals in a tire width direction so as to extend in a tire circumferential direction; and a plurality of land portions partitioned between the main grooves adjacent to each other in the tire width direction, wherein the plurality of land portions include: ground contact areas having an arc shape in cross section in the tire width direction; and depressed portions opening to the ground contact areas, and the land portion having a larger ratio of opening surface area a of the depressed portions opening in the area between the main grooves adjacent to each other in the tire width direction with respect to surface area A of the area (a/A) has an arc-shaped ground contact area with a cross section in the tire width direction having a smaller radius of curvature. | 05-05-2016 |
| 20160193881 | PNEUMATIC TIRE | 07-07-2016 |
