公开(公告)号：US20120067486A1

公开(公告)日：2012-03-22

申请号：US13322871

申请日：2010-05-28

Applicant: Keita Yumii ,  Hiraki Iwasa

Inventor： Keita Yumii ,  Hiraki Iwasa

IPC: B60C17/04

CPC classification number: B60C11/01 ,  B60C9/20 ,  B60C11/032 ,  B60C17/0009 ,  B60C2011/013 ,  B60C2011/0381 ,  Y10S152/03

Abstract: Provided is a run-flat tire having a substantially-crescent-shaped cross section, which makes it possible to achieve both durability at the time of run-flat travel and ride comfort at the time of travel at a normal inner pressure.A rigidity reducing portion 20 that reduces a tire rigidity in the width direction extends in the circumferential direction on a surface of a tread rubber 1 in an area located on the inner side than an end 5a of a belt in the tire width direction and on the outer side than a road-contacting end 15 in the tire width direction under a 75% load state.

Abstract translation: 本发明提供一种具有大致月牙形横截面的漏气保用轮胎，能够实现平行行驶时的耐久性和在正常内压下行驶时的乘坐舒适性。 减小宽度方向的轮胎刚性的刚性减小部20在轮胎宽度方向上位于内侧的区域中的胎面橡胶1的表面上沿着带的端部5a在周向上延伸，并且在 在75％负载状态下，在轮胎宽度方向上的公路接触端15的外侧。

公开(公告)号：US20070051448A1

公开(公告)日：2007-03-08

申请号：US10558255

申请日：2004-05-10

Applicant: Keita Yumii

Inventor： Keita Yumii

IPC: B60C11/00

CPC classification number: B60C11/03 ,  B60C11/0306 ,  B60C11/0318 ,  B60C11/0332 ,  B60C11/04 ,  B60C11/12 ,  B60C2011/0365 ,  B60C2011/0376 ,  B60C2011/0381 ,  B60C2011/0383 ,  B60C2011/0388 ,  B60C2011/039 ,  B60C2011/1209

Abstract: A pneumatic tire reduces the columnar resonance noise of the tire while controlling the lowering of wet performances, wherein four circumferential grooves continuously extending in the circumferential direction of the tire are disposed in a treading face and a plurality of lateral grooves each having one end opened to the circumferential groove and terminated in a land portion are formed with respect to two circumferential grooves among the four circumferential grooves, and these lateral grooves and the respective circumferential grooves have such a groove width that both groove walls of the groove do not contact with each other in a ground contact face and one or more lateral groove are always completely included in the ground contact face, and an extending length of a portion of each lateral groove in the ground contact face having a groove width of the lateral groove corresponding to not less than 30% of a groove width of the circumferential groove is made not less than 40% of an extending length of the circumferential groove in the ground contact face.

Abstract translation: 充气轮胎在控制湿润性能的降低的同时降低轮胎的柱状共振噪声，其中沿轮胎周向连续延伸的四个周向槽设置在踩踏面和多个横向槽中，每个横向槽的一端敞开 在四个周向沟槽中，相对于两个周向槽形成周边槽并且在陆部中终止的周向槽，并且这些横向槽和各个周向槽具有这样的槽宽度，使得槽的两个槽壁彼此不接触 在地面接触面和一个或多个横向槽中总是完全包含在接地面中，并且接地面中的每个横向槽的一部分的延伸长度具有横向槽的槽宽度，该宽度对应于不小于 圆周槽的槽宽的30％为例如40％以上 在地面接触面的周向槽的长度。

公开(公告)号：US20090236021A1

公开(公告)日：2009-09-24

申请号：US12476031

申请日：2009-06-01

Applicant: Keita YUMII

Inventor： Keita YUMII

IPC: B60C11/00

CPC classification number: B60C11/03 ,  B60C11/0306 ,  B60C11/0318 ,  B60C11/0332 ,  B60C11/04 ,  B60C11/12 ,  B60C2011/0365 ,  B60C2011/0376 ,  B60C2011/0381 ,  B60C2011/0383 ,  B60C2011/0388 ,  B60C2011/039 ,  B60C2011/1209

Abstract: A pneumatic tire reduces the columnar resonance noise of the tire while controlling the lowering of wet performances, wherein four circumferential grooves continuously extending in the circumferential direction of the tire are disposed in a treading face and a plurality of lateral grooves each having one end opened to the circumferential groove and terminated in a land portion are formed with respect to two circumferential grooves among the four circumferential grooves, and these lateral grooves and the respective circumferential grooves have such a groove width that both groove walls of the groove do not contact with each other in a ground contact face and one or more lateral groove are always completely included in the ground contact face, and an extending length of a portion of each lateral groove in the ground contact face having a groove width of the lateral groove corresponding to not less than 30% of a groove width of the circumferential groove is made not less than 40% of an extending length of the circumferential groove in the ground contact face.

Abstract translation: 充气轮胎在控制湿润性能的降低的同时降低轮胎的柱状共振噪声，其中沿轮胎周向连续延伸的四个周向槽设置在踩踏面和多个横向槽中，每个横向槽的一端敞开 在四个周向沟槽中，相对于两个周向槽形成周边槽并且在陆部中终止的周向槽，并且这些横向槽和各个周向槽具有这样的槽宽度，使得槽的两个槽壁彼此不接触 在地面接触面和一个或多个横向槽中总是完全包含在接地面中，并且接地面中的每个横向槽的一部分的延伸长度具有横向槽的槽宽度，该宽度对应于不小于 圆周槽的槽宽的30％为例如40％以上 在地面接触面的周向槽的长度。

公开(公告)号：US09180738B2

公开(公告)日：2015-11-10

申请号：US10558255

申请日：2004-05-10

Applicant: Keita Yumii

Inventor： Keita Yumii

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

CPC classification number: B60C11/03 ,  B60C11/0306 ,  B60C11/0318 ,  B60C11/0332 ,  B60C11/04 ,  B60C11/12 ,  B60C2011/0365 ,  B60C2011/0376 ,  B60C2011/0381 ,  B60C2011/0383 ,  B60C2011/0388 ,  B60C2011/039 ,  B60C2011/1209

Abstract: A pneumatic tire reduces the columnar resonance noise of the tire while controlling the lowering of wet performances, wherein four circumferential grooves continuously extending in the circumferential direction of the tire are disposed in a treading face and a plurality of lateral grooves each having one end opened to the circumferential groove and terminated in a land portion are formed with respect to two circumferential grooves among the four circumferential grooves, and these lateral grooves and the respective circumferential grooves have such a groove width that both groove walls of the groove do not contact with each other in a ground contact face and one or more lateral groove are always completely included in the ground contact face, and an extending length of a portion of each lateral groove in the ground contact face having a groove width of the lateral groove corresponding to not less than 30% of a groove width of the circumferential groove is made not less than 40% of an extending length of the circumferential groove in the ground contact face.

Abstract translation: 充气轮胎在控制湿润性能的降低的同时降低轮胎的柱状共振噪声，其中沿轮胎周向连续延伸的四个周向槽设置在踩踏面和多个横向槽中，每个横向槽的一端敞开 在四个周向沟槽中，相对于两个周向槽形成周边槽并且在陆部中终止的周向槽，并且这些横向槽和各个周向槽具有这样的槽宽度，使得槽的两个槽壁彼此不接触 在地面接触面和一个或多个横向槽中总是完全包含在接地面中，并且接地面中的每个横向槽的一部分的延伸长度具有横向槽的槽宽度，该宽度对应于不小于 圆周槽的槽宽的30％为例如40％以上 在地面接触面的周向槽的长度。

公开(公告)号：US08851129B2

公开(公告)日：2014-10-07

申请号：US13322871

申请日：2010-05-28

Applicant: Keita Yumii ,  Hiraki Iwasa

Inventor： Keita Yumii ,  Hiraki Iwasa

IPC: B60C17/00 ,  B60C11/01 ,  B60C11/117 ,  B60C9/20 ,  B60C11/03

CPC classification number: B60C11/01 ,  B60C9/20 ,  B60C11/032 ,  B60C17/0009 ,  B60C2011/013 ,  B60C2011/0381 ,  Y10S152/03

Abstract: Provided is a run-flat tire having a substantially-crescent-shaped cross section, which makes it possible to achieve both durability at the time of run-flat travel and ride comfort at the time of travel at a normal inner pressure. A rigidity reducing portion that reduces a tire rigidity in the width direction extends in the circumferential direction on a surface of a tread rubber in an area located on the inner side than an end of a belt in the tire width direction and on the outer side than a road-contacting end in the tire width direction under a 75% load state.

Abstract translation: 本发明提供一种具有大致月牙形横截面的漏气保用轮胎，能够实现平行行驶时的耐久性和在正常内压下行驶时的乘坐舒适性。 减小宽度方向的轮胎刚性的刚性减小部在胎体橡胶的位于比轮胎宽度方向的带的端部的内侧的区域的外周侧的外周侧的周方向延伸， 在75％负载状态下在轮胎宽度方向上的路面接触端。

公开(公告)号：US09358837B2

公开(公告)日：2016-06-07

申请号：US12476031

申请日：2009-06-01

Applicant: Keita Yumii

Inventor： Keita Yumii

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

CPC classification number: B60C11/03 ,  B60C11/0306 ,  B60C11/0318 ,  B60C11/0332 ,  B60C11/04 ,  B60C11/12 ,  B60C2011/0365 ,  B60C2011/0376 ,  B60C2011/0381 ,  B60C2011/0383 ,  B60C2011/0388 ,  B60C2011/039 ,  B60C2011/1209

Abstract: A pneumatic tire reduces the columnar resonance noise of the tire while controlling the lowering of wet performances, wherein four circumferential grooves continuously extending in the circumferential direction of the tire are disposed in a treading face and a plurality of lateral grooves each having one end opened to the circumferential groove and terminated in a land portion are formed with respect to two circumferential grooves among the four circumferential grooves, and these lateral grooves and the respective circumferential grooves have such a groove width that both groove walls of the groove do not contact with each other in a ground contact face and one or more lateral groove are always completely included in the ground contact face, and an extending length of a portion of each lateral groove in the ground contact face having a groove width of the lateral groove corresponding to not less than 30% of a groove width of the circumferential groove is made not less than 40% of an extending length of the circumferential groove in the ground contact face.

Abstract translation: 充气轮胎在控制湿润性能的降低的同时降低轮胎的柱状共振噪声，其中沿轮胎周向连续延伸的四个周向槽设置在踩踏面和多个横向槽中，每个横向槽的一端敞开 在四个周向沟槽中，相对于两个周向槽形成周边槽并且在陆部中终止的周向槽，并且这些横向槽和各个周向槽具有这样的槽宽度，使得槽的两个槽壁彼此不接触 在地面接触面和一个或多个横向槽中总是完全包含在接地面中，并且接地面中的每个横向槽的一部分的延伸长度具有横向槽的槽宽度，该宽度对应于不小于 圆周槽的槽宽的30％为例如40％以上 在地面接触面的周向槽的长度。