| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 152209230 | Both walls inclined in same direction | 22 |
| 20080202658 | Studless tire - A studless tire capable of exhibiting excellent performances on both icy road and snow-covered road, including tread portion | 08-28-2008 |
| 20090078351 | PNEUMATIC TIRE - In a pneumatic tire, a rotating direction of the tire is specified. A plurality of sipes are formed in land parts. Each of the sipes has a substantially zigzag shape formed by a string of multiple V-shaped parts in a plan view of a tread part, so that a falling amount of the land parts in the rotating direction of the tire differs from that of the land parts in a reverse direction, against an outside force generated when the tire lands on the ground. Besides, a direction of the V-shaped part of the sipe is set so that the falling amount of the land parts in the rotating direction of the tire is smaller than that in the reverse direction. | 03-26-2009 |
| 20090114324 | PNEUMATIC TIRE - A pneumatic tire according to the present invention improves wet performance. | 05-07-2009 |
| 20090218021 | PNEUMATIC TIRE - A pneumatic tire having a rotation direction specified in one direction. The tread surface has a main groove extending on the equatorial plane of the tire, right and left first inclination grooves extending in an inclined manner from the main groove toward the reverse rotation direction of the tire, and right and left second inclination grooves disposed on the opposite sides of the main groove. The right and left second inclination grooves are disposed at symmetrical positions with respect to the equatorial plane of the tire. Blocks are formed on the opposite sides of the main groove by the main groove, right and left first inclination grooves and right and left second inclination grooves. The blocks include right and left first blocks defined by tire rotation direction side portions of the second inclination grooves, main groove and first inclination grooves, and right and left second blocks defined by tire reverse rotation direction side portions of the second inclination grooves, main groove and first inclination grooves. First main groove portions between the right and left first blocks are less in width than second main groove portions between the right and left second blocks. | 09-03-2009 |
| 20090218022 | PNEUMATIC TIRE - A pneumatic tire having shoulder blocks defined on a shoulder side of the tread surface by lateral grooves extending in the widthwise direction of the tire beyond a ground contact end of the tire, the shoulder blocks being arranged in the circumferential direction of the tire. A bottom-raising portion is provided only on a bottom of every other lateral groove of the lateral grooves. Two shoulder blocks adjacent in the circumferential direction of the tire are connected by the first bottom-raising portion. | 09-03-2009 |
| 20090294003 | PNEUMATIC TIRE - Provided is a pneumatic tire having a tread surface in which two circumferential direction main grooves continuous in a tire circumferential direction are arranged on left and right sides of a tire center, and land portions are defined by the circumferential direction main grooves as ribs or blocks having lug grooves. Multiple fine grooves are provided in each of right and left walls of the circumferential direction main groove, the fine grooves being inclined to the tire circumferential direction and provided in regions along the circumferential direction main groove, covering at least 50% of the entire circumference thereof in total. In each of the two circumferential direction main grooves on corresponding tire shoulder sides, the fine grooves in the right and left walls are inclined to the tire circumferential direction in the same direction in a plan view in a tire radial direction. In each of the two circumferential direction main grooves on a tire center side, the fine grooves in the right wall and those in the left wall are inclined to the tire circumferential direction in directions opposite to each other in a plan view in the tire radial direction. | 12-03-2009 |
| 20100116394 | Pneumatic Tire - A pneumatic tire has a tread pattern having shoulder blocks arranged in a tire circumferential direction in a shoulder portion of a tread surface, and slits to sectionalize the shoulder blocks. Slit wall surfaces in a trailing side and a leading side of the shoulder blocks are inclined to the slit side from both end portions in a width direction of the shoulder block toward a center portion in the width direction. A notch portion is provided in the center portion in the width direction in the slit wall surface in the trailing side or the leading side of the shoulder block. | 05-13-2010 |
| 20100147426 | TIRE - A tire is configured having first and second shoulder rows of shoulder tread elements opposite respective first and second interior rows of interior tread elements, separated respectively by circumferentially extending, zig-zag shaped first and second grooves within a tire tread region. Each groove is defined by opposed shoulder tread elements and interior tread elements and includes a circumferentially continuous see-through central groove portion extending parallel to a circumferential centerplane of the tread. The see-through circumferential grooves communicate with angular intermediate and shoulder lateral grooves having a relatively wide mouth dimension adjacent to a respective circumferential grooves. Staggered in and out shoulder regions within the shoulder tread elements facilitate gripping edges and prevent mud clogging of the shoulder grooves. | 06-17-2010 |
| 20100224297 | PNEUMATIC TIRE - A pneumatic tire according to the present invention includes blocks on its tread which are segmented by plural circumferential grooves | 09-09-2010 |
| 20110094642 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion having an outside tread edge and an inside tread edge. The tread portion is provided with: a plurality of oblique grooves extending from the outside tread edge toward the inside tread edge beyond the tire equator, while inclining to one circumferential direction corresponding to the tire rotational direction at angles of from 20 to 45 degrees with respect to said one circumferential direction; and a plurality of connecting grooves extending between the oblique grooves at angles β of from 90 to 180 degrees with respect to said one circumferential direction. Between every two of the adjacent oblique grooves, there are disposed are three or more of the connecting grooves which are gradually decreased in the angle β from the outside tread edge towards the inside tread edge, whereby a plurality of oblique blocks are formed between every two of the adjacent oblique grooves. | 04-28-2011 |
| 20110209806 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion provided with a plurality of blocks, each of the block having a block wall surface facing a transverse groove inclined at an angle (theta) of from 5 to 40 degrees with respect to the tire axial-direction so as to define an acute-angled corner and an obtuse-angled corner on the block. The block wall surface between the acute-angled corner and the obtuse-angled corner is provided with at least two slits having a width of from 0.3 to 2.0 mm. A distance P | 09-01-2011 |
| 20110220261 | PNEUMATIC TIRE - The present invention is directed to provide a pneumatic tire capable of effectively preventing large collision noise due to simultaneous collision of plural blocks of respective rows with a road surface. Six rows | 09-15-2011 |
| 20120090750 | PNEUMATIC TIRE - A pneumatic tire including a closed sipe in a land portion | 04-19-2012 |
| 20120132337 | Tread With Incisions - A tread for passenger-vehicle tire having radially on the outside a running surface and comprising a plurality of elements, at least certain of these elements being provided with at least one incision delimited by two opposite faces, this incision consisting of a succession of thin sections and of thick sections placed in an alternating manner, the thin sections being inclined at an angle A equal to no more than 40 degrees, this angle being measured relative to a direction perpendicular to the running surface of the tread and passing through the points of the incision on the running surface of the tread, the thick sections forming an angle B of between 60 degrees and 120 degrees with a direction perpendicular to the running surface of the tread, and the thin sections having a width e less than the width E of the thick sections, the width of the thin sections being such that, when they go through the contact patch, the walls delimiting said thin sections are in contact, and the width of the thick sections being such that, when they go through the contact patch, the walls delimiting the thick sections are not in contact. | 05-31-2012 |
| 20120186712 | MOTOR VEHICLE TYRE - A motor vehicle tyre, particularly for front wheels of motor vehicles, has a tread extending around an axis of rotation and includes a central annular portion which straddles an equatorial plane and two annular shoulder portions arranged on axially opposite sides of the central annular portion. The tread band has a void-to-rubber ratio of less than 10%, and the central annular portion has an axial extension less than 40% of the axial development of the tread band and includes at least a pair of first grooves extending substantially longitudinally on opposite sides of the equatorial plane. Each shoulder portion has an axial extension less than 35% of the axial development of the tread band and includes a plurality of second grooves extending substantially transversally forming an average angle with the equatorial plane of more than 90°. The central annular portion has a void-to-rubber ratio more than 0.15 and the first grooves include at least one first segment and at least one second segment which is inclined with respect to the first segment so as to form a concavity directed toward the equatorial plane. The first segment of each first groove is shorter than the second segment and precedes the second segment in the tyre rolling direction. | 07-26-2012 |
| 20130153106 | Three Dimensional Sipe - Provided is a sipe extending into a tire tread, comprising an outer radial portion defined by a first waveform having a first amplitude, a first width, and a first wavelength, and an inner radial portion defined by a second waveform having a second amplitude, a second width, and a second wavelength. The first wavelength may be less than 5% of the length of the sipe or may be more than 100% of the length of the sipe, or the second wavelength may be less than 5% of the length of the sipe or may be more than 100% of the length of the sipe, or the second amplitude may be more than 50% of the first wavelength or may be less than 10% of the first wavelength, or the second amplitude may be more than 50% of the second wavelength or may be less than 10% of the second wavelength. | 06-20-2013 |
| 20140230983 | PNEUMATIC TIRE - A pneumatic tire is provided in the tread portion with a central land portion between two crown main grooves. The central land portion is provided with notches each having a depth of 55% to 65% of the depth of the crown main groove and having a closed end and an open end opening to the crown main groove. | 08-21-2014 |
| 20160009144 | PNEUMATIC TIRE | 01-14-2016 |
| 20160016438 | PNEUMATIC TIRE - Provided is a pneumatic tire being improved in heat dissipation effect in the tread portion while being ensured in rigidity of the land portion. A narrow groove ( | 01-21-2016 |
| 20160023518 | PNEUMATIC TIRE - Provided is a pneumatic tire being improved in heat dissipation effect in the tread portion while being ensured in rigidity of the land portion. A narrow groove ( | 01-28-2016 |
| 20160193883 | HEAVY DUTY PNEUMATIC TIRE | 07-07-2016 |
| 20160250897 | PNEUMATIC TIRE | 09-01-2016 |
