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| Number | Title | Issue Date |
| 7614435 | Pneumatic tire having circumferential straight main groove, arcuate curved main grooves and circumferential auxiliary grooves A pneumatic tire having improved noise buffering capability and operation stability while maintaining excellent water discharge capability. A circumferential straight main groove (1) is provided at the center of a tread center region. Arc-like curved main gro... | 11/10/2009 |
| 7422043 | Pneumatic tire with tread having circumferential sub-grooves including at least three raised portions A pneumatic tire is provided, where the rigidity of the blocks formed on the tread surface is increased and an increase in the level of noise when the tread surface is worn can be prevented. In a pneumatic tire where a number of blocks which are separated by a numbe... | 09/09/2008 |
| 7416003 | Pneumatic tire with tread surface having specified direction of rotation A tread surface the tire rotational direction of which is specified in one direction has a center region and shoulder regions on both sides of the center region. Blocks are defined in at least one of the shoulder regions by at least one first circumferential groove ... | 08/26/2008 |
| 7360569 | Pneumatic tire with tread including circumferential rib region, block regions and sipes It is a subject to improve wet performances and noise performances while restricting degradations in dry performances, and for solving this subject, the pneumatic tire is comprised of a tread grounding surface that is partitioned into four to five regions by three t... | 04/22/2008 |
| 7322390 | Pneumatic tire having tread with blocks having obtuse angle corner portions A tread surface, the tire rotational direction of which is specified in one direction, has a center region. Blocks having obtuse-angled corner portions and acute-angled corner portions are defined in the center region by at least one first circumferential groove ext... | 01/29/2008 |
| 7281555 | Off-the-road tire The invention is to improve wear resistance and resistance to crack growth of an off-the-road tire having a gauge of a tread rubber of 60-200 mm, in which a plurality of widthwise grooves extending substantially in a widthwise direction of the tire are arranged in e... | 10/16/2007 |
| 7275573 | Radial passenger tire with improved tread contour A pneumatic radial ply passenger tire (10) having a tread (20), a casing with two sidewalls (14, 16), one or more radial plies (18) extending from and wrapped about two annular beads (13) and a belt reinforcement structure (15 | 10/02/2007 |
| 7178570 | Pneumatic tire including main and auxiliary oblique grooves in axially inner region of tread A pneumatic tire is provided in the tread portion with circumferential grooves, main oblique grooves and auxiliary oblique grooves. The circumferential grooves include: a pair of axially outer grooves disposed one on each side of the tire equator; and at least one a... | 02/20/2007 |
| 7163039 | High-performance tire for a motor vehicle A high-performance tire for a motor vehicle includes a carcass and tread band. The tire may be, for example, of the asymmetrical or directional type. The tread band includes a pattern including a central region, first and second shoulder regions, and first and secon... | 01/16/2007 |
| 7152641 | Heavy-duty pneumatic tire having non-contact rib and shoulder blocks A heavy-duty pneumatic tire designed to suppress the occurrence of heel-and-toe wear in the shoulder blocks while maintaining good drainage and traction performance through the final stage of the wear life. In this heavy-duty pneumatic tire, whose shoulder portion i... | 12/26/2006 |
| 7093630 | Heavy duty radial tire A heavy duty radial tire which is provided with traverse grooves extending between the tread edges and longitudinal grooves extending between the traverse grooves so as to form shoulder blocks arranged along each of the tread edges and inner blocks each disposed on ... | 08/22/2006 |
| 7025100 | Pneumatic tire including blocks and splitting grooves A pneumatic tire is provided in the tread portion with a circumferential row of middle tread elements, wherein each of the middle tread elements is divided into four elemental blocks having different configurations, by three splitting grooves, and the three splittin... | 04/11/2006 |
| 6971425 | Tire for high-performance vehicles and premoulded tread band having an asymmetrical pattern A tire for a vehicle wheel includes a carcass structure, a belt structure, and a tread band. The tread band pattern includes a central zone and two axially-opposite shoulder zones. The central zone is delimited between axially-inner circumferential grooves and inclu... | 12/06/2005 |
| 6957676 | Tire for a vehicle wheel including at least two circumferential series of inclined incisions delimiting at least three rows of blocks The present invention relates to a tire designed to be fitted on the driving axles of a motor vehicle for medium or heavy load. This tire is provided with a tread comprising a plurality of full-depth transverse grooves and four circumferential series of inclined gro... | 10/25/2005 |
| 6907909 | Pneumatic tire including pseudo-land part A pneumatic tire comprises a tread portion having a plurality of slant grooves, in which each slant groove has a steeply slant groove portion and a gently slant groove portion, and the steeply slant groove portion comprises a pseudo-land part of a given shape, and c... | 06/21/2005 |
| 6799616 | Pneumatic tire including auxiliary land part having slope In a pneumatic tire comprising a tread portion divided into a central region and both side regions, at least one rib-shaped main land part is formed in the central region and a plurality of main slant grooves are arranged so as to extend obliquely from the central r... | 10/05/2004 |
| 6796350 | Vehicle tire having non-uniformly profiled tread with respect to its center A vehicle tire having a non-uniformly profiled tread with respect to its center, with a circumferential extending superwide groove having a width of at least 30 mm provided in one half of the tread and two further circumferential grooves which are narrower in compar... | 09/28/2004 |
| 6761197 | Tire and tread thereof A tyre for vehicles includes a carcass structure, a belt structure, and a tread. The tread includes a row of central blocks and a row of intermediate blocks arranged on each side of an equatorial plane of the tyre between a central longitudinal groove formed astride... | 07/13/2004 |
| 6736175 | Motor vehicle tire, particularly for lorries and the like A vehicle wheel tyre includes a carcass structure, a belt structure, and a tread. The tread includes four circumferential grooves and a plurality of transverse grooves that define at least five circumferential rows of blocks, each block approximating a polygon. The ... | 05/18/2004 |
| 6681823 | Heavy load pneumatic radial tire A heavy load pneumatic radial tire has the circular fine groove 5 running in the tire circumferential direction at least at one side of the shoulder portion 4 running on both sides of the tread surface 11 of the tread portion 1. The said fine groove 5 has... | 01/27/2004 |
| 6656300 | High performance tire for vehicles A very high performance tire (1, 101) for vehicles comprises a tread (14) provided with a plurality of transversal grooves (15) circumferentially distributed along the tread (14) in groups alternately extending from opposite shoulder zones (F, G) of the t... | 12/02/2003 |
| 6640858 | Tire having tread grooves having right-hand groove wall and left-hand groove wall A tire comprises a tread portion in which a mold parting line by a single-split mold runs on or near the tire equator. In a central part of the tread portion in which tread grooves are provided, the groove edges which are stroked by tire mold's protrusion... | 11/04/2003 |
| 6591880 | Pneumatic tire including zig-zag circumferential fine grooves A pneumatic tire comprises a pair of bead portions, a pair of sidewall portion, a tread portion, a radial carcass of at least one ply, and a belt, wherein the tread portion is provided with two or more circumferential main grooves formed in a tread rubber... | 07/15/2003 |
| 6578612 | Pneumatic radial tire having six block rows A pneumatic radial tire, wherein five main grooves extending in the circumferential direction of a tire are provided on a tread to divide into and form land portions of six rows, each land portion is divided into block rows constituted by a plurality of b... | 06/17/2003 |
| 6571844 | Pneumatic tire having tread including pairs of sipes Sipes extending from one end of a block to the central area of the block and sipes extending from the other end of the block to the central area of the block (sipes 24, 28, 32 and 36) are inclined in directions opposite to each other. The sipes extending ... | 06/03/2003 |
| 6568444 | Pneumatic radial tire having small negative ratio and small tread ground contacting width to rim width A pneumatic radial tire having excellent steering stability, resistance to hydroplaning and noise reduction comprises a carcass, a belt and a tread portion provided with a plurality of tread grooves and having an aspect ratio of not more than 50%, in whic... | 05/27/2003 |
| 6488064 | Sacrificial ribs for improved tire wear The present invention provides a tire with a sacrificial rib to protect the main ribs of the tire's tread by delaying the onset of irregular wear and the growth thereof. The improved tire tread comprises a plurality of main ribs formed by grooves extendin... | 12/03/2002 |
| 6481480 | Convertible tread for a radial truck or trailer tire A radial ply pneumatic tire 10 for trucks or trailers has a tread 12 with at least three circumferential grooves 20,22 extending circumferentially to divide the tread 12 into at least four parts and lateral grooves 30,31,32,33,34 extending across the at l... | 11/19/2002 |
| 6415836 | Pneumatic tire including axial grooves having different widths and tread elements having different lengths A pneumatic tire having an improved tread pattern which is capable of improving the steering stability, tire uniformity and the like without increasing a tread pattern noise is disclosed. The tire comprises rows of circumferentially arranged tread element... | 07/09/2002 |
| 6415834 | Tire having low rolling resistance, in particular for driving wheels of heavy vehicles A tire (1) having low rolling resistance, in particular for driving wheels of heavy vehicles, comprises a tread (14) provided with a plurality of transversal grooves (20) pitchwise spaced from one another and extending in a direction substantially perpend... | 07/09/2002 |
| 6374884 | Heavy duty tire including narrow groove A heavy duty tire comprises a pair of axially outermost circumferential rows of shoulder blocks, each of the shoulder blocks provided with a circumferentially extending narrow groove, the narrow groove subdividing the shoulder block into an axially inner ... | 04/23/2002 |
| 6340040 | Vehicle tire including main grooves and lug grooves A vehicle tire comprises circumferentially extending straight main grooves including a central main groove on the tire equator and an axially outer main groove on each side thereof, first lug grooves extending from the axially outer main grooves towards t... | 01/22/2002 |
| 6311748 | Tire for motor vehicle wheels having a tread producing a low rolling noise A tread for motor-vehicle tires has a raised pattern formed of a plurality of shaped blocks 7 distributed in circumferential rows 3, 4, 5, 6 disposed in parallel and in side by side relation. The number of the shaped blocks 7 arranged in each row graduall... | 11/06/2001 |
| 6220321 | Heavy duty tire including wide main grooves, narrow grooves and lug grooves A heavy duty tire is provided in the tread portion with a circumferentially extending main groove on each side of the tire equator, a circumferentially extending narrow groove on each side of each main groove, lug grooves extending from the tread edges to... | 04/24/2001 |
| 6213181 | Tire having a groove wall lining for reducing formation of anomalies causing subjective user dissatisfaction A tire having a pair of beads; a carcass ply having ends, each of the ends anchored to a respective one of the beads; at least one belt ply extending circumferentially around the tire and disposed radially outward of the carcass ply; and a tread layer dis... | 04/10/2001 |
| 6170546 | Heavy duty pneumatic tire including variable width grooves and constant width grooves A heavy duty pneumatic tire comprises a tread portion which is provide with wide circumferential grooves having a width Wm1 of 4.0 mm to 20.0 mm and narrow circumferential grooves having a width Wm2 of not less than 2.0 mm but less than 4.0 mm, and each r... | 01/09/2001 |
| 6119745 | Pneumatic tire including only one wide groove A pneumatic tire has a tread portion with one circumferential wide groove extending continuously in the circumferential direction. A centroid of the cross-section of the circumferential wide groove deviates from the tire's equatorial plane so as to divide... | 09/19/2000 |
| 6112787 | Heavy duty pneumatic tire including narrow rib A heavy duty pneumatic tire having improved resistance to uneven tread wear includes a tread portion provided with an axially outer longitudinal main groove and an axially inner longitudinal narrow groove, each extending circumferentially about the tire t... | 09/05/2000 |
| 6109316 | Tire having improved tread portion for reducing formation of anomalies causing user dissatisfaction The invention is directed to a shoulder construction of the tread area of pneumatic tires which provides increased stability and reduced wear. The shoulder construction comprises a decoupling rib having an outer surface arranged circumferentially about th... | 08/29/2000 |
| 6105643 | On/off road radial pneumatic light truck or automobile tire An on/off road radial pneumatic light truck or automobile tire has a tread with at least one wide groove having an average width of at least 7% of the tread width. At least two axially adjacent rows of traction elements are separated by the wide groove. T... | 08/22/2000 |
