公开(公告)号：US20130269848A1

公开(公告)日：2013-10-17

申请号：US13857062

申请日：2013-04-04

Applicant: THE YOKOHAMA RUBBER CO., LTD.

Inventor： Naoto Kaba

IPC: B60C11/03

CPC classification number: B60C11/03 ,  B60C11/0302 ,  B60C11/0304 ,  B60C11/033 ,  B60C11/1236 ,  B60C2011/0353 ,  B60C2011/0367 ,  B60C2011/0376 ,  B60C2011/0381 ,  B60C2011/0383 ,  Y10S152/03

Abstract: A pneumatic tire is provided which includes a plurality of drainage grooves positioned on each side of a tire equator line that extend at an angle in a direction opposite a rotating direction while curving outward in a tire width direction in a tread portion, with an end of a leading edge closed and an end of a trailing edge open to a tire side. A plurality of sub grooves extending from the drainage grooves in the rotating direction is provided, where an end of the leading edge is closed. The drainage grooves and the sub grooves are arranged so that spacings W1, W2, and W3 gradually increase outward in the tire width direction, groove area ratios RA to RE satisfy the relationships |RB−RA|≦9%, RA>RC>RD, and RB>RE, and a groove depth of the drainage grooves in the center region is greater than that in the shoulder portion.

Abstract translation: 提供了一种充气轮胎，其包括多个排水槽，该多个排水槽位于轮胎赤道线的每一侧上，所述多个排水槽沿着与轮胎宽度方向向外弯曲而沿与旋转方向相反的方向延伸， 前缘封闭，后缘的一端向轮胎侧开放。 提供从排水槽沿旋转方向延伸的多个副槽，前缘的一端封闭。 排水槽和副沟槽布置成使得间隔W1，W2和W3沿轮胎宽度方向向外逐渐增加，槽面积比RA至RE满足关系| RB-RA | @ 9％，RA> RC> RD ，RB> RE，中央区域的排水槽的槽深度大于肩部的凹槽深度。

公开(公告)号：US08985170B2

公开(公告)日：2015-03-24

申请号：US13857062

申请日：2013-04-04

Applicant: The Yokohama Rubber Co., Ltd.

Inventor： Naoto Kaba

IPC: B60C11/03 ,  B60C11/12

CPC classification number: B60C11/03 ,  B60C11/0302 ,  B60C11/0304 ,  B60C11/033 ,  B60C11/1236 ,  B60C2011/0353 ,  B60C2011/0367 ,  B60C2011/0376 ,  B60C2011/0381 ,  B60C2011/0383 ,  Y10S152/03

Abstract: A pneumatic tire is provided which includes a plurality of drainage grooves positioned on each side of a tire equator line that extend at an angle in a direction opposite a rotating direction while curving outward in a tire width direction in a tread portion, with an end of a leading edge closed and an end of a trailing edge open to a tire side. A plurality of sub grooves extending from the drainage grooves in the rotating direction is provided, where an end of the leading edge is closed. The drainage grooves and the sub grooves are arranged so that spacings W1, W2, and W3gradually increase outward in the tire width direction, groove area ratios RA to RE satisfy the relationships |RB−RA|≦9%, RA>RC>RD, and RB>RE, and a groove depth of the drainage grooves in the center region is greater than that in the shoulder portion.

Abstract translation: 提供了一种充气轮胎，其包括多个排水槽，该多个排水槽位于轮胎赤道线的每一侧上，所述多个排水槽沿着与轮胎宽度方向向外弯曲而沿与旋转方向相反的方向延伸， 前缘封闭，后缘的一端向轮胎侧开放。 提供从排水槽沿旋转方向延伸的多个副槽，前缘的一端封闭。 排水槽和副沟槽布置成使得轮胎宽度方向上的间隔W1，W2和W3向外逐渐增加，槽面积比RA至RE满足关系| RB-RA |＆nlE; 9％，RA> RC> RD ，RB> RE，中央区域的排水槽的槽深度大于肩部的凹槽深度。