公开(公告)号：US12005743B2

公开(公告)日：2024-06-11

申请号：US17254897

申请日：2019-06-27

Applicant: BRIDGESTONE CORPORATION

Inventor： Akihiro Kawakita

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

CPC classification number: B60C11/0302 ,  B60C11/0311 ,  B60C11/1236 ,  B60C11/1384 ,  B60C2011/0313 ,  B60C2011/0346 ,  B60C2011/0348 ,  B60C2011/0358 ,  B60C2011/1213

Abstract: A tire includes a tread surface portion with inclined grooves, 2ND longitudinal grooves, and shoulder longitudinal grooves; and an indicator portion that indicates a rotation direction of the tire in which a vehicle travels forward. The inclined groove gradually extends forward in the rotation direction toward a tire equator from the outside in the tire width direction. A front surface among inner surfaces defining the inclined groove includes a first side surface with an inner end portion to which the 2ND longitudinal groove is open, a second side surface positioned closer to an inside than the first side surface and of which an outer end portion is positioned closer to a rear side than the inner end portion of the first side surface, and a stepped surface that connects an inner edge of the first side surface to an outer edge of the second side surface and faces the outside.

公开(公告)号：US20140367010A1

公开(公告)日：2014-12-18

申请号：US14364095

申请日：2012-12-28

Applicant: BRIDGESTONE CORPORATION

Inventor： Akihiro Kawakita

IPC: B60C11/00 ,  B29D30/06

CPC classification number: B60C11/00 ,  B29C33/424 ,  B29D30/0606 ,  B29D2030/0616 ,  B29D2030/667 ,  B29K2995/0074 ,  B29L2030/00

Abstract: A tire of the present invention has surface properties at which the kurtosis of the assessed profile Rku is 2 or less on at least a part of the tread surface of the tread portion. In addition, a tire forming mold of the present invention has a kurtosis of the assessed profile Rku of 2 or less on at least a part of the tread-surface molding surface.

Abstract translation: 本发明的轮胎具有在胎面部的胎面表面的至少一部分上评价轮廓Rku的峰度为2以下的表面特性。 此外，本发明的轮胎成形用模具在至少一部分胎面面成形面上的评价轮廓Rku的峰度为2以下。

公开(公告)号：US10052917B2

公开(公告)日：2018-08-21

申请号：US14896923

申请日：2014-04-04

Applicant: BRIDGESTONE CORPORATION

Inventor： Akihiro Kawakita

IPC: B60C11/11 ,  B60C11/03 ,  B60C11/13 ,  B60C11/12

CPC classification number: B60C11/0309 ,  B60C11/0327 ,  B60C11/11 ,  B60C11/1307 ,  B60C11/1376 ,  B60C2011/0334 ,  B60C2011/0341 ,  B60C2011/1213

Abstract: Heel-and-toe wear can be suppressed while securing snow performance. Includes: a block (14) that is provided at a tread (16), and that is demarcated by mutually intersecting circumferential direction main grooves (22) and lateral main grooves (24) (main grooves) respectively extending around a tire circumferential direction and along a tire width direction; a first step portion (11) that extends along a wall portion (14F) at one tire circumferential direction side of the block (14), and that has a height from a groove bottom (24A) of the lateral main groove (24) (main groove) where the one side wall portion (14F) is present, which is lower than a tread face (14A); and a second step portion (12) that extends along a side wall portion (14R) at another tire circumferential direction side of the block (14), that has a height from a groove bottom (24A) of the lateral main groove (24) (main groove) where the other side wall portion (14R) is present, which is lower than the tread face (14A), and that has a smaller width than the first step portion (11).

公开(公告)号：USD897938S1

公开(公告)日：2020-10-06

申请号：US29675544

申请日：2019-01-03

Applicant: BRIDGESTONE CORPORATION

Designer： Akihiro Kawakita