公开(公告)号：US11654720B2

公开(公告)日：2023-05-23

申请号：US16945209

申请日：2020-07-31

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Hidetoshi Taniguchi

IPC: B60C11/01 ,  B60C11/13 ,  B60C11/03 ,  B60C11/04

CPC classification number: B60C11/01 ,  B60C11/1315 ,  B60C11/04 ,  B60C2011/0348 ,  B60C2011/0397

Abstract: A tire comprises a tread portion whose shoulder land part is provided with a narrow circumferential groove having an axially inner wall surface, an axially outer wall surface and a groove bottom including a deepest point. The axially inner wall surface has a radially inner curved portion concaved toward the axially inside, and the axially outer wall surface has a radially inner curved portion concaved toward the axially outside. the radially outer end of the radially inner curved portion of the axially inner wall surface is positioned radially inside the radially outer end of the radially inner curved portion of the axially outer wall surface.

公开(公告)号：US11745546B2

公开(公告)日：2023-09-05

申请号：US17226516

申请日：2021-04-09

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Hidetoshi Taniguchi

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

CPC classification number: B60C11/04 ,  B60C11/032 ,  B60C2011/036 ,  B60C2011/0344 ,  B60C2011/0348 ,  B60C2011/0351 ,  B60C2011/0362 ,  B60C2011/0383 ,  B60C2011/1254

Abstract: A tire 1 includes a pair of crown circumferential grooves 30, a pair of shoulder circumferential grooves 31, a crown land portion 40, and a pair of middle land portions 41 and 42, the crown land portion 40 includes a main crown shallow groove 100 and at least two sub-crown shallow grooves 101 and 102 each extending so as to communicate with the crown circumferential groove 30 and the main crown shallow groove 100, the pair of middle land portions 41 and 42 include V-shaped slots 201 and 202, respectively, and the sub-crown shallow grooves 101 and 102 and the slots 201 and 202 are located so as to be substantially point-symmetrical about a midpoint between positions at which the adjacent sub-crown shallow grooves 101 and 102 communicate with the main crown shallow groove 100.