公开(公告)号：US20180154700A1

公开(公告)日：2018-06-07

申请号：US15575418

申请日：2016-05-16

Applicant: BRIDGESTONE CORPORATION

Inventor： Taro SAKURAI

IPC: B60C11/12

CPC classification number: B60C11/1204 ,  B60C11/03 ,  B60C11/12 ,  B60C11/1218 ,  B60C11/1236 ,  B60C11/1272 ,  B60C2011/1209 ,  B60C2011/1213

Abstract: To provide a tire capable of suppressing shoulder uneven wear effectively when the tire is mounted to a vehicle having high vehicle height. In a tire according to the present invention, a width direction sipe (100) is formed. The width direction sipe (100) is provided with a zigzag portion (112) formed in a zigzag shape in a tire circumferential direction toward an inner side of a tire radial direction, a center region Wctr, an inner shoulder region Win, and an intermediate region Wmid. The zigzag portion (112) in the center region Wctr and the zigzag portion (112) in the inner shoulder region Win are longer than the zigzag portion (112) in the intermediate region Wmid in the tire radial direction.

公开(公告)号：US20180126792A1

公开(公告)日：2018-05-10

申请号：US15577769

申请日：2016-04-19

Applicant: BRIDGESTONE CORPORATION

Inventor： Takayuki KURATA

IPC: B60C11/12 ,  B60C11/13

CPC classification number: B60C11/124 ,  B60C11/0302 ,  B60C11/0309 ,  B60C11/0316 ,  B60C11/1204 ,  B60C11/1259 ,  B60C11/1272 ,  B60C11/1307 ,  B60C11/1323 ,  B60C2011/0313 ,  B60C2011/1213

Abstract: Taking a groove side-wall to a position at ½ a groove depth from a tread face of lug groove as a tread-in side first inclined portion, and taking a groove side-wall from the position at ½ groove depth to a groove bottom as a tread-in side second inclined portion, then the following A1 is set less than the following B1. When viewed in cross-section orthogonal to a length direction of the lug groove: A1 is an area of a region enclosed by an imaginary line passing through an end portion on a tread face side of the tread-in side first inclined portion and perpendicular to the tread face, by an imaginary line passing through an end portion on a groove bottom side of the tread-in side first inclined portion and orthogonal to the imaginary line, and by the tread-in side first inclined portion; and B1 is an area of a region enclosed by an imaginary line passing through an end portion on a tread face side of the tread-in side second inclined portion and perpendicular to the tread face, by an imaginary line passing through the deepest portion of the lug groove and parallel to the tread face, and by the tread-in side second inclined portion.

公开(公告)号：US20180093534A1

公开(公告)日：2018-04-05

申请号：US15719009

申请日：2017-09-28

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Hiroyuki ISHINO

IPC: B60C11/03 ,  B60C11/12

CPC classification number: B60C11/0302 ,  B60C11/1204 ,  B60C11/1236 ,  B60C2011/0374 ,  B60C2011/0381 ,  B60C2011/1213

Abstract: A first and a second tread pattern portions P1 and P2 on each side of a tire equator (Co) are line symmetry except being circumferentially misaligned, and are each provided with oblique lateral grooves 3, inner and outer joint grooves 4 and 5 connecting between the circumferentially adjacent oblique lateral grooves 3, inner terminating grooves 7 disposed between the inner and outer joint grooves 4 and 5, outer terminating grooves 8 disposed between the outer joint grooves and a ground contact edge (TE), and center joint grooves 6 alternately connecting the oblique lateral grooves of the first and second tread pattern portions. The inner and outer joint grooves 4 and 5 and the inner and outer terminating grooves 7 and 8 are inclined to different directions from the oblique lateral grooves 3. The outer terminating grooves 8 extend on extended lines of the outer joint grooves 5.

公开(公告)号：US20180079261A1

公开(公告)日：2018-03-22

申请号：US15710304

申请日：2017-09-20

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Tomoyuki KUJIME ,  Hiroshi OKAGAWA

IPC: B60C11/12 ,  B60C11/03

CPC classification number: B60C11/1236 ,  B60C11/0083 ,  B60C11/0304 ,  B60C11/1204 ,  B60C2011/0341 ,  B60C2011/0346 ,  B60C2011/0353 ,  B60C2011/0358 ,  B60C2011/0381

Abstract: A pneumatic tire includes a tread portion provided with a crown land region and middle land regions provided with only sipes, and shoulder land regions provided with shoulder rug grooves and connecting sipes. The tread portion is provided with a crown tread profile having a radius of curvature, a middle tread profile having a radius of curvature, and a shoulder tread profile having a radius of curvature which satisfy a magnitude relation Rc>Rm>Rs. First interconnecting positions at which the crown tread profile connects with the middle tread profiles are positioned in the respective middle land regions. Second interconnecting positions at which the middle tread profiles connect with the shoulder tread profiles are positioned in the respective shoulder land regions and axially inside the inner ends of the shoulder rug grooves.

公开(公告)号：US20180072103A1

公开(公告)日：2018-03-15

申请号：US15559232

申请日：2016-03-24

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

Inventor： Marie-Hélène VANTAL ,  Vincent LEDIEU ,  Kazutaka YOKOKAWA ,  Quentin BONNETON ,  Héloïse DEBORDEAUX ,  Mathieu VANDAELE

IPC: B60C11/12 ,  B60C11/13 ,  B60C11/03

CPC classification number: B60C11/1204 ,  B60C11/0302 ,  B60C11/0323 ,  B60C11/11 ,  B60C11/1236 ,  B60C11/1281 ,  B60C11/1323 ,  B60C11/1392 ,  B60C2011/0337 ,  B60C2011/1209 ,  B60C2011/133

Abstract: A tire comprising a tread. This tread comprises at least one elongate block delimited by at least one lateral wall (5) and a contact face (7). The lateral wall (5) makes a non-zero angle with a transverse direction and the contact face contacts a road surface. The tire comprises at least one channel (19) extending through the elongate block and leading onto the lateral wall (5) of this elongate block. The tire also comprises a sipe extending from the channel towards the contact face, this sipe leading onto the lateral wall of the elongate block in a lateral wall outlet region. The lateral wall of the elongate block is inclined with respect to a radial direction (Z), at least in the lateral wall outlet region of the sipe, at an angle θ of between 20 degrees and 60 degrees with respect to this radial direction (Z).

公开(公告)号：US09902209B2

公开(公告)日：2018-02-27

申请号：US14648388

申请日：2013-11-22

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE, S.A.

Inventor： Vincent Ledieu ,  Bertrand Fraenkel ,  Illyes Batnini ,  Marie-Helene Vantal

IPC: B60C11/03 ,  B60C11/12 ,  B60C11/13

CPC classification number: B60C11/1204 ,  B60C11/0302 ,  B60C11/0323 ,  B60C11/12 ,  B60C11/1281 ,  B60C11/13 ,  B60C2011/0374 ,  B60C2011/0381 ,  B60C2011/1209

Abstract: 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.

公开(公告)号：US09862236B2

公开(公告)日：2018-01-09

申请号：US14072770

申请日：2013-11-05

Applicant: HANKOOK TIRE CO., LTD.

Inventor： Eun Chang Chun ,  Seong Jun Park

IPC: B60C11/13 ,  B60C11/04 ,  B60C11/01 ,  B60C11/12

CPC classification number: B60C11/047 ,  B60C11/01 ,  B60C11/042 ,  B60C11/12 ,  B60C11/1204 ,  B60C11/125 ,  B60C11/1307 ,  B60C11/1315 ,  B60C11/1353 ,  B60C2011/013 ,  B60C2011/133 ,  B60C2011/1338 ,  B60C2011/1361

Abstract: 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. The pneumatic tire of the invention includes a tread, side walls and bead sections, with a large number of blocks compartmentalized by grooves being formed on the surface of the tread, and also includes reinforcing ribs that are positioned inside a groove and have their lower parts joined with the bottom of the groove, with one lateral surface of a reinforcing rib and one side wall of the groove being in contact.

公开(公告)号：US20180001711A1

公开(公告)日：2018-01-04

申请号：US15616336

申请日：2017-06-07

Applicant: Toyo Tire & Rubber Co., Ltd.

Inventor： Tsuyoshi Fujioka

IPC: B60C11/12 ,  B60C11/03 ,  B60C11/13

CPC classification number: B60C11/1236 ,  B60C11/0309 ,  B60C11/033 ,  B60C11/11 ,  B60C11/1204 ,  B60C11/1353 ,  B60C11/1369 ,  B60C2011/0346 ,  B60C2011/0369 ,  B60C2011/0381 ,  B60C2011/1213 ,  B60C2011/1254 ,  B60C2011/1361

Abstract: In a pneumatic tire, three or four zigzag main grooves extending in a tire circumferential direction with amplitude in a tire width direction, a plurality of lateral grooves extending in a direction intersecting the main grooves, and block rows formed by the main grooves and the lateral grooves are provided at a tread portion. When a tire is grounded, a ratio of a total sum of lengths of groove center lines of the main grooves in a ground contact surface to a total sum of lengths of amplitude center lines of the main grooves in the ground contact surface is set to 1.05 to 1.25.

公开(公告)号：US20170267029A1

公开(公告)日：2017-09-21

申请号：US15462380

申请日：2017-03-17

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Masahiro NAGASE

IPC: B60C11/03 ,  B60C11/04 ,  B60C11/12

CPC classification number: B60C11/0302 ,  B60C11/0304 ,  B60C11/0306 ,  B60C11/04 ,  B60C11/1204 ,  B60C11/125 ,  B60C11/1263 ,  B60C11/1369 ,  B60C2011/0344 ,  B60C2011/0353 ,  B60C2011/0355 ,  B60C2011/1209 ,  B60C2011/1213

Abstract: A pneumatic tire whose position when mounted on a vehicle is specified so that the tread portion 2 has an outside tread edge Te1 and an inside tread edge Te2. The tread portion 2 comprises an outside land region 4A provided with first sipes 10 extending across the entire width of the outside land region. The first sipe 10 comprises a v-shaped portion 13 formed by a first oblique segment 11 and a second oblique segment 12. The v-shaped portion 13 has an apex 15 located on the outside-tread-edge side of a widthwise center of the outside land region 4A. The maximum depth d2 in the second oblique segment 12 is smaller than the maximum depth d1 in the first oblique segment 11.

公开(公告)号：US20170253089A1

公开(公告)日：2017-09-07

申请号：US15504756

申请日：2015-08-07

Applicant: BRIDGESTONE CORPORATION

Inventor： Shintaro HAYASHI

IPC: B60C11/04 ,  B60C11/12

CPC classification number: B60C11/042 ,  B60C11/01 ,  B60C11/03 ,  B60C11/0306 ,  B60C11/12 ,  B60C11/1204 ,  B60C11/1236 ,  B60C11/124 ,  B60C11/1272 ,  B60C11/13 ,  B60C11/1384 ,  B60C2011/0341 ,  B60C2011/0388 ,  B60C2011/1295

Abstract: This pneumatic tire includes, on a tread surface, land portions defined by tread edges and by circumferential main grooves extending continuously in the tread circumferential direction; central sipes, in a central land portion on a tire equatorial plane, extending in the tread width direction and formed at a predetermined pitch length, the central land portion being continuous in the tread circumferential direction between adjacent central sipes; and intermediate sipes, in intermediate land portions adjacent to the central land portion on both sides in the tread width direction with the circumferential main grooves therebetween, extending in the tread width direction and being formed at a predetermined pitch length, each intermediate land portion being continuous in the tread circumferential direction between adjacent intermediate sipes. The pitch length of the intermediate sipes is longer than that of the central sipes, and both ends of the central sipes open into the circumferential main grooves.