公开(公告)号：US20110192513A1

公开(公告)日：2011-08-11

申请号：US12953131

申请日：2010-11-23

Applicant: Takeshi HAMADA

Inventor： Takeshi HAMADA

IPC: B60C11/03

CPC classification number: B60C11/0306 ,  B60C3/04 ,  B60C9/28 ,  B60C11/047 ,  B60C11/125 ,  B60C2011/0367 ,  B60C2011/0381 ,  B60C2200/06 ,  Y10S152/03

Abstract: A heavy duty tire comprises a tread portion provided with four or five circumferential grooves so as to axially divide the tread portion into five or six rib portions. The five or six rib portions are a pair of shoulder rib portions each provided with shoulder lateral groove, and three or four crown rib portions each provided with crown lateral grooves. The crown lateral grooves extend across the entire width of the crown rib portion. The shoulder lateral grooves extend axially outwardly from an axially inner edge of the shoulder rib portion so as to terminate at an axial distance of from 78 to 88% of the axial width of the shoulder rib portion from the above-mentioned axially inner edge. The depth of the circumferential grooves is 15 to 20 mm. The depth of the crown lateral grooves is 9 to 30% of the depth of the circumferential grooves. The depth of the shoulder lateral grooves is 9 to 25% of the depth of the circumferential grooves. The tread width TW is in a range of 0.78 to 0.87 times the cross sectional width SW of the tire.

Abstract translation: 重型轮胎包括设置有四个或五个周向槽的胎面部分，以便将胎面部分轴向地分成五个或六个肋部分。 五个或六个肋部分是一对肩部肋条，每个肩部肋条均设有肩部横向槽，三个或四个胎冠肋条分别设置有胎冠横向槽。 冠部横向槽横跨冠状肋部分的整个宽度延伸。 胎肩横向沟槽从胎肩肋部分的轴向内边缘轴向向外延伸，从而在与上述轴向内边缘的肩肋部分的轴向宽度的78至88％的轴向距离处终止。 圆周槽的深度为15〜20mm。 胎冠横向槽的深度为圆周槽深度的9〜30％。 肩部横向槽的深度为圆周槽深度的9〜25％。 胎面宽度TW在轮胎的横截面宽度SW的0.78〜0.87倍的范围内。

公开(公告)号：US20110226397A1

公开(公告)日：2011-09-22

申请号：US13021096

申请日：2011-02-04

Applicant: Takeshi HAMADA

Inventor： Takeshi HAMADA

IPC: B60C11/12

CPC classification number: B60C11/12 ,  B60C11/11 ,  B60C11/1369 ,  B60C2011/1213 ,  B60C2011/1231 ,  B60C2200/06

Abstract: A heavy duty tire comprises a tread portion provided with tread blocks each provided in the ground contact surface thereof with a single zigzag sipe. A ratio A/B of a block length (A) which is the circumferential length of the block measured along a straight line passing through the centroid of the ground contact surface to a maximum block width (B) which is the axial distance between the axial extreme ends of the ground contact surface is 0.8 to 1.7. The zigzag sipe is disposed within a central region which is defined as extending from the centroid of the ground contact surface towards each side in the tire circumferential direction by 25% of the block length (A). The zigzag sipe is composed of a pair of major straight segments extending axially inwardly from both sides of in the tire axial direction of the block, and a minor straight segment extending between the inner ends of the respective major straight segments, so that the circumferential distance between the circumferential extreme ends of the sipe is in a range of from 10 to 35% of the block length (A).

Abstract translation: 重型轮胎包括设置有胎面花纹块的胎面部，胎面花纹块在其接地表面中设置有单个之字形刀槽花纹。 沿着通过接地面的重心的直线测量的块的周长的最大块宽度（B）的块长度（A）的比A / B（B）是轴向 地面接触面的末端为0.8〜1.7。 之字形刀槽花纹设置在中心区域内，该中心区域被定义为从接地面的中心向轮胎周向的每一侧延伸25％的块长度（A）。 曲折刀槽花纹由一对主要直线部分组成，该直线部分从块体的轮胎轴向方向两侧向轴向延伸，以及在相应主直线段的内端之间延伸的小直线段， 在刀槽花纹的周向末端之间的距离在块长度（A）的10至35％的范围内。