Class / Patent application number | Description | Number of patent applications / Date published |
152209220 | Protrusion bridging between walls (e.g., tie bar, etc.) | 20 |
20100084063 | PNEUMATIC TIRE - In a pneumatic tire, a difference Gs-Ge falls in a range of Gs-Ge≧0.10, where Gs is a groove area ratio for a wear rate 0% and Ge is a groove area ratio for a wear rate 100%. Further, a groove area ratio G for a wear rate 20% falls in a range of (Gs-G)/(Gs-Ge)≧0.30, and a groove area ratio G for a wear rate 35% falls in a range of (Gs-G)/(Gs-Ge)≧0.50. | 04-08-2010 |
20110259494 | HEAVY DUTY TIRE - A heavy duty tire comprises a tread portion provided with a central circumferential groove, a crown circumferential groove on each side thereof and crown axial grooves extending therebetween so as to for crown blocks. The crown block is circumferentially subdivides into two block pieces by a crown narrow groove. The crown axial groove is provided in the groove bottom with a tie bar rising therefrom and connecting the circumferentially adjacent two crown blocks each other. The crown axial grooves are inclined at an angle α of from 10 to 30 degrees with respect to the tire axial direction. The central circumferential groove and an axially inner part of the crown axial groove which part is axially inside the tie bar, are shallower than the crown circumferential groove. | 10-27-2011 |
20120080130 | REINFORCED TIRE TREAD - A tire tread region has a first block element and a second adjacent block element e spaced apart by a groove and a reinforcement bar is situated within the groove. The reinforcement bar extends between the first and second adjacent blocks at a prescribed inclination angle from a deeper surface end within the groove to a radially more shallow opposite surface end. The inclined surface includes a radially outwardly facing concave surface portion at the radially inward, deeper, inclined surface end. | 04-05-2012 |
20120145295 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion divided into a crown land region, two middle land regions and two shoulder land regions. The crown land region and middle land regions are each divided into triangular blocks by axial grooves arranged in a zigzag fashion. The shoulder land regions are each divided into shoulder blocks by axial grooves extending at an angle of not less than 70 degrees. The shoulder block is subdivided into an axially inner part and an axially outer part by a secondary groove extending at an angle of not more than 10 degrees. The outer part is provided with sipes extending at an angle of not less than 70 degrees, each angle with respect the circumferential direction. | 06-14-2012 |
20120160385 | PNEUMATIC TIRE - A pneumatic tire tread includes center lateral grooves inclined to the reverse direction of the belt cords of the outermost belt ply of the belt, a groove width Wyc of the center lateral grooves being from 1.0 to 6.0 mm, shoulder lateral grooves being inclined to the same direction of the belt cords of the outermost belt ply, the shoulder lateral grooves having a narrow-width portion having a groove width Wys | 06-28-2012 |
20120241061 | HEAVY DUTY PNEUMATIC TIRE - A heavy duty pneumatic tire is provided in the tread portion with six land portions (crown, middle and shoulder) divided axially by five main grooves. Each land portion is divided into blocks by axial grooves (crown, middle and shoulder). Each axial groove is provided with a tie bar. The tie bar in the shoulder axial groove is largest in the protruding height. The maximum widths Wcr, Wmi and Wsh of the crown, middle and shoulder land portions satisfy; 0.9=09-27-2012 | |
20120247632 | PNEUMATIC TIRE - A pneumatic tire has a shoulder land zone provided with lateral grooves arranged at variable pitches in the tire circumferential direction and extending at an angle of not more than 30 degrees with respect to the tire axial direction. The domains defined between the shoulder lateral grooves include a smallest domain having the smallest circumferential length and a largest domain having the largest circumferential length. The domains are each provided with at least one sipe extending at an angle of not more than 30 degrees with respect to the tire axial direction. The number of the sipe(s) in the smallest domain is less than the number of the sipes in the largest domain. | 10-04-2012 |
20130061993 | COMMERCIAL TRUCK STEER TIRE TREAD - A vehicle tire tread includes a circumferential spaced apart array of discrete tie-bar block elements within a circumferential tread groove, each tie-bar block element having a circumferentially oriented bisecting cut dividing the tie bar into opposed tie-bar components. The opposed tie-bar components operatively flex and converge axially when present within a rolling tire footprint to close the radially outward cut segment and resume a nominal separation dimension when outside a rolling tire footprint. The bisecting cut within each tie-bar block element further forms at a radially inward end a large diameter fluid conducting channel extending through the tie-bar block element to allow the passage of fluid along the circumferential groove, unobstructed by the array of tie-bar block elements. | 03-14-2013 |
20130098519 | HEAVY DUTY TIRE - A heavy duty tire includes a tread portion with a pair of circumferentially extending crown main grooves and a pair of circumferentially extending shoulder main grooves to form a crown land portion, a pair of middle land portions and a pair of shoulder land portions, wherein crown main grooves have groove widths of 2-5% of a tread half width, shoulder main grooves have groove widths of 6-9% of the tread half width, crown lateral grooves are provided on the crown land portion to form a plurality of crown blocks, middle lateral grooves are provided on middle land portions, shoulder lateral grooves are provided on shoulder land portions, crown and middle lateral grooves have groove widths of 0.4-2.0 mm, and shoulder lateral grooves have groove widths of 6-9% of the tread half width. | 04-25-2013 |
20130292021 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion provided with a radially outermost breaker ply and three main grooves extending in the tire circumferential direction. Crown axial grooves disposed between the main grooves are inclined oppositely to cords of the radially outermost breaker ply, at angles in a range of from | 11-07-2013 |
20130306210 | PNEUMATIC TIRE - An object of the present invention is to provide a pneumatic tire capable of facilitating heat dissipation of a tread portion thereof to lower temperature at the tread portion. Specifically, the present invention provides a pneumatic tire having in a tread surface at least one circumferential groove extending in the tire circumferential direction and plural lateral grooves, the lateral grooves each opening to the circumferential groove, having a wider groove width than the circumferential groove and extending to be inclined with respect to the tire circumferential direction, comprising: a recessed portion formed in a groove wall, facing the corresponding lateral groove, of the circumferential groove; and at least one projecting portion formed at a groove bottom of the circumferential groove between the recessed portions adjacent to each other in the tire circumferential direction. | 11-21-2013 |
20140116590 | Heavy Duty Tire - An off the road tire comprising a carcass, a tread located radially outward of the carcass, the tread having a plurality of lugs, the lugs extending radially outward from an inner tread and being located between first and second lateral tread edges, a first row of lugs extending from the tread lateral edge axially inwards toward the centerplane, a second row of lugs extending from the opposite tread lateral edge and axially inwards toward the centerplane and wherein the lugs of the first and second rows are separated by a plurality of shoulder grooves, a third row of lugs located between the first and second row of lugs, wherein all of the lugs in each row are aligned circumferentially, wherein the lugs in the third row have two or more ends formed by nonlinear grooves. | 05-01-2014 |
20140209227 | MOTORCYCLE TIRE FOR RUNNING ON ROUGH TERRAIN - A motorcycle tire having a block pattern suitable for running on rough terrain is disclosed. Each middle block overlaps with one of crown blocks at least partially in the tire circumferential direction. The top face of each crown block has an axially long rectangular shape. The top face of each middle block has a substantially pentagonal shape having five sides which are an axially inner side extending in the tire circumferential direction, a pair of transverse sides inclined so that the circumferential distance therebetween is gradually increased, and a pair of axially outer sides inclined so that the circumferential distance therebetween is gradually decreased. In a ground contacting patch of the tire in its normally inflated loaded condition and at the camber angle of zero, only an axially inner part of the top face of each middle block contacts with the ground. | 07-31-2014 |
20140230982 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion provided with a pair of center main grooves and a pair of shoulder main grooves to define a center portion, a pair of middle portions, and a pair of shoulder portions. The shoulder main grooves extend in a trapezoid wave manner that includes a circumferentially extending axially outer part, an axially inner part arranged axially inwardly of the axially outer part, and an inclined part connecting between the axially outer and inner parts. The shoulder portion is provided with shoulder lateral grooves extending from the shoulder main groove to a tread edge to define a plurality of shoulder blocks. Each shoulder lateral groove has its axially inner end connected to the axially outer part of the shoulder main groove so as to include an outer corner point between the axially outer part and the inclined part. | 08-21-2014 |
20140345767 | PNEUMATIC TIRE - A pneumatic tire comprises a tread portion provided with blocks each provided with a first variable depth sipe and a second variable depth sipe each having both axial ends opened at edges of the block on both sides thereof in the tire axial direction. In each block, a shallow portion of the first variable depth sipe overlaps, in the tire axial direction, with a deep main portion of the second variable depth sipe. an axial groove dividing the blocks is provided with a tie bar overlapping, in the tire axial direction, with the deep main portion of the adjacent variable depth sipe. | 11-27-2014 |
20150306918 | PNEUMATIC TIRE - The pneumatic tire has main grooves; land portions which are sectioned by the main grooves; paired notches which face to each other as well as being open to a tread surface; the notches being concave portions which are formed in side surfaces of two land portions which are adjacent across the main grooves; tie bars which protrudes at a predetermined height from groove bottoms of the main grooves and connect between the paired notches; and dimples which are provided in the middle in a width direction of the tie bars. The dimples are arranged at least in a notch internal region which is surrounded by wall surfaces of the notches among the tie bars. | 10-29-2015 |
20150321521 | TIRE - A groove bottom of a groove in a tire is provided with multiple protrusions. The protrusions extend from one side wall to the other side wall opposed to the one side wall, the side walls forming the groove. The protrusions are disposed at predetermined intervals in the groove. If the length of the protrusion is denoted as L, and the predetermined intervals are denoted as P, the relationship 0.75 L≦P≦10 L is satisfied. Lateral grooves, which extend from the groove portion to a buttress and have openings, are formed in the buttress. In a tread surface view of the tire, the lateral grooves extend on an angle with respect to a tread width direction (twd), and the angle of the lateral grooves with respect to the tread width direction is 15 degrees to 60 degrees. | 11-12-2015 |
20150328940 | PNEUMATIC TIRE - A pneumatic tire having a designated orientation for mounting to a vehicle includes a tread, sidewalls, beads including bead cores, respectively, and a carcass including a carcass ply. Each bead includes a rubber apex, an outer bead and an inner bead, the rubber apex includes an outer apex portion and an inner apex portion, the outer apex portion includes a first outer apex portion positioned inward from the carcass ply in the axial direction and a second outer apex portion positioned outward from the carcass ply in the axial direction, the inner apex portion includes a first inner apex portion positioned inward from the carcass ply in the axial direction and a second inner apex portion positioned outward from the carcass ply in the axial direction, and the second outer apex portion has height which is greater than height of the second inner apex portion in the radial direction. | 11-19-2015 |
20160144664 | PNEUMATIC TIRE - A pneumatic tire includes a tread having a first tread edge, main grooves in tire circumferential direction, lands bordered by the main grooves, and lateral grooves crossing through the lands. Each land includes a first section having the first tread edge, a second section adjacent to an inner side of the first section, and a third section adjacent to an inner side of the second section, each lateral groove includes first, second and third grooves in the sections, respectively, each lateral groove has an outer portion that extends from first tread-edge side land periphery and a sipe portion that is connected to the outer portion and extends to the other land periphery opposite a first tread-edge side, and the lateral grooves satisfy A | 05-26-2016 |
20160152089 | HEAVY DUTY PNEUMATIC TIRE | 06-02-2016 |