公开(公告)号：US11926182B2

公开(公告)日：2024-03-12

申请号：US17416825

申请日：2019-12-14

Applicant: BRIDGESTONE CORPORATION

Inventor： Eiji Ichihara ,  Yusuke Nakamura

IPC: B60C9/28 ,  B60C9/00 ,  B60C9/22 ,  B60C9/26

CPC classification number: B60C9/28 ,  B60C9/0042 ,  B60C9/22 ,  B60C9/2204 ,  B60C9/263 ,  B60C2200/02

Abstract: A first belt cord made of organic fibers of a spirally wound belt layer extends at an angle of equal to or less than 5° relative to a tire equatorial plane, a second belt cord made of organic fibers of a zigzag belt layer extends at an inclination of an angle of 2° to 45° relative to the tire equatorial plane, to folding back points where the second belt cord is folded back at each width directional end edge of the zigzag belt layer, and a relation of N95>N50 is satisfied. N50 is the number of stacked belt layers of the spirally wound belt layers, at 50% of half the length of a maximum belt width of belt layers from the tire equatorial plane. N95 is the number of stacked belt layers of the spirally wound belt layers, at 95% of half the length of the maximum belt.

公开(公告)号：US09211764B2

公开(公告)日：2015-12-15

申请号：US14480003

申请日：2014-09-08

Applicant: BRIDGESTONE CORPORATION

Inventor： Eiji Ichihara

IPC: B60C9/20 ,  B60C9/22 ,  B60C9/00

CPC classification number: B60C9/20 ,  B60C9/0007 ,  B60C9/0042 ,  B60C9/2003 ,  B60C9/2006 ,  B60C9/2009 ,  B60C9/2204 ,  B60C2009/2016 ,  B60C2009/2019 ,  B60C2009/2022 ,  B60C2009/2093 ,  Y10T152/10801

Abstract: Provided is a pneumatic tire having excellent durability and driving stability during high-speed running of the vehicle (that is, during high-speed rotation of the tire). The pneumatic tire includes: a carcass; an intersecting belt which is provided on the outer circumference side of a crown portion of the carcass and formed of two inclined belt layers having cords inclined and extending in a direction intersecting each other across a tire equatorial plane; and a circumferential belt layer which is provided on either one of the inner side and the outer side of the intersecting belt in the tire radial direction and includes a spiral cord arranged as being spirally wound at an inclination angle of equal to or smaller than 5 degrees to the tire equatorial plane. Of the two inclined belt layers forming the intersecting belt, the cords in a first inclined belt layer are inclined at an inclination angle that falls within the range of 45 to 90 degrees relative to the tire equatorial plane, while the cords in a second inclined belt layer are inclined at an inclination angle that falls within the range of 15 to 45 degrees relative to the tire equatorial plane and is smaller than the inclination angle of the cords in the first inclined belt layer.

Abstract translation: 本发明提供一种在车辆的高速行驶（即轮胎的高速旋转）期间具有优异的耐久性和驾驶稳定性的充气轮胎。 充气轮胎包括：胎体; 该交叉带设置在胎体的胎冠部分的外周侧，由两个倾斜的带束层组成，所述两个倾斜带束层具有沿着与轮胎赤道面相交的方向倾斜并延伸的绳索; 以及周向带层，其设置在所述交叉带的内侧和外侧中的轮胎径向方向上的任一侧上，并且包括以等于或小于5度的倾斜角螺旋形缠绕的螺旋绳 到轮胎赤道平面。 在形成交叉带的两个倾斜带束层中，第一倾斜带层中的帘线以相对于轮胎赤道平面在45度至90度的范围内的倾斜角倾斜，而在第二倾斜带中的帘线 层以相对于轮胎赤道面15〜45度的范围的倾斜角度倾斜，并且小于第一倾斜带束层中的帘线的倾斜角度。