公开(公告)号：US07942177B2

公开(公告)日：2011-05-17

申请号：US12466050

申请日：2009-05-14

Applicant: Daichi Nakamura

Inventor： Daichi Nakamura

IPC: B60C11/12

CPC classification number: B60C11/0302 ,  B60C11/0306 ,  B60C11/13 ,  B60C11/1369 ,  B60C2011/0381 ,  Y10S152/03

Abstract: Provided is a pneumatic tire that has a directional tread pattern and includes: a rib-shaped first land area extending in the tire-circumferential direction in a center section of a tread portion; paired first main grooves being adjacent respectively to the two sides of the first land area; paired second land areas being adjacent respectively to the outer sides of the first main grooves; paired second main grooves being adjacent respectively to the outer sides of the second land areas; paired third land areas being adjacent respectively to the outer sides of the second main grooves; a fine groove extending at the center of the first land area; plural lug grooves formed in the first land area; and plural sipes formed in the first land area. Each lug groove intersects with a corresponding sipe. An end of the lug groove formed in the first land area is formed as a dead end between the fine groove and a corresponding first main groove. The width and depth of each lug groove formed in the first land area are gradually reduced from its open-end side to its closed-end side. Each sipe formed in the first land area communicates with the fine groove, and includes: a deeper section between a corresponding first main groove and the intersection with a corresponding lug groove; and a shallower section between the fine groove and the intersection with the corresponding lug groove.

Abstract translation: 本发明提供一种具有定向胎面花纹的充气轮胎，其特征在于，包括：在胎面部的中央部沿轮胎周向延伸的肋状的第一胎面区域; 成对的第一主槽分别相邻于第一陆地区域的两侧; 成对的第二陆地区域分别相邻于第一主槽的外侧; 成对的第二主槽分别与第二区域的外侧相邻; 成对的第三陆地区域分别与第二主槽的外侧相邻; 在第一陆地区域的中心延伸的细槽; 形成在第一陆地区域中的多个横向花纹槽; 以及形成在第一陆地区域中的多个刀槽花纹。 每个横向花纹沟与相应的刀槽花纹相交。 形成在第一平台区域中的横向花纹沟的端部形成为细微槽与对应的第一主槽之间的死角。 形成在第一平台区域中的每个横向花纹沟的宽度和深度从其开口端逐渐减小到其封闭端侧。 形成在第一区域中的每个刀槽花纹与细槽沟通，并且包括：相应的第一主槽与与相应的横向槽之间的交点处的较深部分; 并且在细槽与与相应的横向花纹沟的交点之间较浅的部分。

公开(公告)号：US20090301623A1

公开(公告)日：2009-12-10

申请号：US12466050

申请日：2009-05-14

Applicant: Daichi Nakamura

Inventor： Daichi Nakamura

IPC: B60C11/13 ,  B60C11/12

CPC classification number: B60C11/0302 ,  B60C11/0306 ,  B60C11/13 ,  B60C11/1369 ,  B60C2011/0381 ,  Y10S152/03

Abstract: Provided is a pneumatic tire that has a directional tread pattern and includes: a rib-shaped first land area extending in the tire-circumferential direction in a center section of a tread portion; paired first main grooves being adjacent respectively to the two sides of the first land area; paired second land areas being adjacent respectively to the outer sides of the first main grooves; paired second main grooves being adjacent respectively to the outer sides of the second land areas; paired third land areas being adjacent respectively to the outer sides of the second main grooves; a fine groove extending at the center of the first land area; plural lug grooves formed in the first land area; and plural sipes formed in the first land area. The lug grooves alternate with the sipes along the tire-circumferential direction. Each lug groove intersects with a corresponding sipe. An end of the lug groove formed in the first land area is formed as a dead end between the fine groove and a corresponding first main groove. The width and depth of each lug groove formed in the first land area are gradually reduced from its open-end side to its closed-end side. Each sipe formed in the first land area communicates with the fine groove, and includes: a deeper section between a corresponding first main groove and the intersection with a corresponding lug groove; and a shallower section between the fine groove and the intersection with the corresponding lug groove, the shallower section being shallower than the deeper section.

Abstract translation: 本发明提供一种具有定向胎面花纹的充气轮胎，其特征在于，包括：在胎面部的中央部沿轮胎周向延伸的肋状的第一胎面区域; 成对的第一主槽分别相邻于第一陆地区域的两侧; 成对的第二陆地区域分别相邻于第一主槽的外侧; 成对的第二主槽分别与第二区域的外侧相邻; 成对的第三陆地区域分别与第二主槽的外侧相邻; 在第一陆地区域的中心延伸的细槽; 形成在第一陆地区域中的多个横向花纹槽; 以及形成在第一陆地区域中的多个刀槽花纹。 横向花纹沟沿着轮胎周向与刀槽花纹交替。 每个横向花纹沟与相应的刀槽花纹相交。 形成在第一平台区域中的横向花纹沟的端部形成为细微槽与对应的第一主槽之间的死角。 形成在第一平台区域中的每个横向花纹沟的宽度和深度从其开口端逐渐减小到其封闭端侧。 形成在第一区域中的每个刀槽花纹与细槽沟通，并且包括：相应的第一主槽与与相应的横向花纹沟的交点之间的较深部分; 并且在细槽与相应的横向花纹沟的交点之间较浅的部分，较浅的部分比较深的部分浅。