公开(公告)号：US5385189A

公开(公告)日：1995-01-31

申请号：US967281

申请日：1992-10-27

Applicant: Namito Aoki ,  Yasufumi Ichiki ,  Chishiro Tanabe

Inventor： Namito Aoki ,  Yasufumi Ichiki ,  Chishiro Tanabe

IPC: B60C20060101 ,  B60C11/03 ,  B60C11/04 ,  B60C11/11 ,  B60C11/12

CPC classification number: B60C1/00 ,  B60C11/03 ,  B60C11/04 ,  B60C11/11 ,  B60C11/12 ,  B60C11/1281 ,  Y10S152/03

Abstract: A pneumatic tire includes a plurality of blocks, each having a narrow area interposed between one set of two sipes which extend substantially in a transverse direction of the tire and wide areas positioned respectively at both sides of the narrow area across the sipes. An average distance H2 from a tire tread surface of the narrow area to bottom portions of the sipes is less than an average distance H1 from tire tread surfaces of the wide areas to the bottom portions of the sipes. Expanded portions may be provided at the bottom portions of the two sipes. A ratio W2/W1 of a length W2 of the narrow area in the transverse direction of the tire to a length W1 of the wide areas in the transverse direction of the tire may satisfy 0.50.ltoreq.W2/W1.ltoreq.0.95. A length, in the circumferential direction of the tire, of at least one side end portion of the narrow area may be longer than a length, in the circumferential direction of the tire, of a central portion of the narrow area. In a vulcanization mold for forming a green tire, a pair of blades for forming a pair of sipes are provided at a bottom portion of a concave portion for forming a block portion. A vent hole is also provided at a bottom portion of an area between the blades. A method of manufacturing a pneumatic tire using the mold is provided.

Abstract translation: 一种充气轮胎包括多个块，每个块具有狭窄的区域，该区域介于基本上在轮胎的横向方向上延伸的一组两个刀槽花纹之间，分别位于狭窄区域的横跨刀槽花纹的两侧。 从狭窄区域的轮胎胎面表面到刀槽花纹的底部的平均距离H2小于从宽幅区域的轮胎胎面表面到刀槽花纹的底部的平均距离H1。 扩展部分可以设置在两个刀槽花纹的底部。 轮胎宽度方向上的窄区域的长度W2与轮胎宽度方向的宽度方向的长度W1的比W2 / W1可以满足0.50≤W2/W1≤0.95。 狭窄区域的至少一个侧端部的轮胎的圆周方向的长度可以比​​在狭窄区域的中心部分的轮胎的圆周方向上的长度长。 在用于形成生胎的硫化模具中，用于形成一对刀槽花纹的一对刀片设置在用于形成块部的凹部的底部。 在叶片之间的区域的底部还设置有通气孔。 提供一种使用该模具制造充气轮胎的方法。

公开(公告)号：US06408911B1

公开(公告)日：2002-06-25

申请号：US08654976

申请日：1996-05-28

Applicant: Chishiro Tanabe ,  Yuji Yamaguchi

Inventor： Chishiro Tanabe ,  Yuji Yamaguchi

IPC: B60C1111

CPC classification number: B60C11/1369 ,  B29D30/0606 ,  B29D2030/0613 ,  B60C11/00 ,  B60C11/005 ,  B60C11/12 ,  B60C11/1218 ,  B60C11/1263 ,  B60C11/1281 ,  B60C11/13 ,  B60C2011/1213 ,  B60C2011/1268 ,  Y10S152/03 ,  Y10S152/902

Abstract: A studless pneumatic tire having excellent running performance of the tire on icy road surfaces. The tire has a plurality of block-shaped island portions formed on a cylindrical tread extending between a pair of sidewalls. The island portions have laterally extending sipes and are separated by a plurality of main grooves extending in the circumferential direction as well as by many lug grooves. Each island portion has a first sipe and a second sipe. The first sipe extends from a first lateral end facing a first main groove to traverse a first edge region of the island portion in a substantially axial direction and branches into a plurality of branch segments, thereby forming a fork-like shape, at a first interface between the first edge region and the central region of the island portion. Each branch segment traverses the central region of the island portion and reaches a point near a second interface between an opposite second edge region and the central region of the island portion. The second sipe extends from a second lateral end of the island portion facing a second main groove so as to traverse the second edge region and extends into the central region of the island portion in the axial direction. These first and second sipes divide the central region of the island portion into a larger number of island elements compared to the edge regions of the island portion.

Abstract translation: 一种在冰冷的路面上具有优异的轮胎运行性能的无钉式充气轮胎。 轮胎具有形成在一对侧壁之间延伸的圆柱形胎面上的多个块状岛部。 岛部具有横向延伸的刀槽花纹，并且由沿圆周方向延伸的多个主槽以及许多横向花纹沟分开。 每个岛部分具有第一刀槽花纹和第二刀槽花纹。 第一刀槽花纹从面向第一主槽的第一横向端部延伸，以在大致轴向方向上横过岛状部分的第一边缘区域并且分支成多个分支段，从而在第一界面处形成叉形形状 在岛部的第一边缘区域和中心区域之间。 每个分支段穿过岛部分的中心区域并到达相邻的第二边缘区域和岛部分的中心区域之间的第二界面附近的点。 第二刀槽花纹从所述岛部的面向第二主槽的第二横向端部延伸，以便横过所述第二边缘区域并沿轴向延伸到所述岛部的中心区域。 与岛部分的边缘区域相比，这些第一和第二刀槽花纹将岛部分的中心区域分成更多数量的岛状元件。

公开(公告)号：US5814169A

公开(公告)日：1998-09-29

申请号：US643532

申请日：1996-05-06

Applicant: Yuji Yamaguchi ,  Chishiro Tanabe

Inventor： Yuji Yamaguchi ,  Chishiro Tanabe

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

CPC classification number: B60C11/13 ,  B60C11/0323 ,  B60C11/11 ,  B60C11/12 ,  B60C11/1218 ,  B60C11/1263 ,  B60C11/1369 ,  B60C2011/1213 ,  B60C2011/1268 ,  Y10S152/03

Abstract: Pneumatic tires according to this invention have a tread provided with blocks separated by circumferential grooves extending around the tread and lateral grooves crossing the circumferential grooves, the blocks being respectively provided with two lateral sipes, characterized in that the lateral end portions having small rigidity in block portions which are substantially separated by lateral sipes are reinforced by, for example, a platform. The invention has the effects of restraining block chipping in heavy duty tires and degrading of steering stability in passenger tires, and enhancing the performance on ice without degrading wet performance, by means of increasing sipe density and restraining lowering of the block rigidity.

Abstract translation: 根据本发明的气动轮胎具有胎面，胎面设置有由围绕胎面延伸的周向槽和与周向槽交叉的横向槽分隔的块，该块分别设置有两个侧向刀槽花纹，其特征在于，在块中具有较小的刚度 由外侧刀槽花纹基本分离的部分例如由平台加强。 本发明通过增加刀槽花纹密度和抑制块刚度的降低，具有抑制重型轮胎中的块体破碎和降低乘客轮胎的操纵稳定性的作用，提高冰上性能，而不会降低湿性能。

公开(公告)号：USD499695S1

公开(公告)日：2004-12-14

申请号：US29198272

申请日：2004-01-29

Applicant: Chishiro Tanabe ,  Akiyoshi Shimizu ,  Kazuo Uchida

Designer： Chishiro Tanabe ,  Akiyoshi Shimizu ,  Kazuo Uchida

CPC classification number: B60C11/0311 ,  B60C2200/065