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    • 83. 发明申请
    • HEAVY-LOAD RADIAL TIRE
    • 重负荷辐射轮胎
    • US20110315288A1
    • 2011-12-29
    • US13164529
    • 2011-06-20
    • Atsushi YAMAHIRAReika NoguchiKenichiro TanadaMasahiro Tamura
    • Atsushi YAMAHIRAReika NoguchiKenichiro TanadaMasahiro Tamura
    • B60C11/03B60C11/13B60C11/12
    • B60C11/0083B60C11/01B60C11/04B60C11/12B60C2011/013
    • A heavy-load radial tire comprises a tread portion, wherein in a tire meridian section including a tire axis under a normally inflated unloaded condition in which the tire is mounted on a standard wheel rim and inflate to a standard pressure but loaded with no tire load, the tread portion comprises a crown portion and a pair of shoulder portions each disposed axially outside the crown portion and including a tread edge, the crown portion has a crown profile being a circular arc of a radius of curvature TR1 of which the center is on a tire equatorial plane, the shoulder portion has a shoulder profile being a circular arc of a radius of curvature TR2 which crosses the crown profile at an intersection point P so that a tangent line on the shoulder profile at the intersection point P inclines at angle of not more than 7 degrees with respect to a tire axial direction, wherein the radius of curvature TR2 is 0.60 to 0.95 times the radius of curvature TR1, a plurality of sipes are provided in the shoulder portion, and each sipe extends from the tread edge toward the tire equatorial plane without going beyond the shoulder portion.
    • 重载子午线轮胎包括胎面部分,其中在轮胎子午线部分中,轮胎子午线部分包括在正常充气的无负载条件下的轮胎轴线,其中轮胎安装在标准轮缘上并且膨胀到标准压力但是没有轮胎负载 胎面部分包括冠部和一对胎肩部分,每个胎肩部分轴向设置在胎冠部分的外侧并且包括胎面边缘,冠部具有冠部轮廓,该轮廓轮廓是中心在其上的曲率半径TR1的圆弧 轮胎赤道平面,肩部具有肩部轮廓,该轮廓是在交叉点P处与冠部轮廓相交的曲率半径TR2的圆弧,使得交叉点P上的肩廓上的切线以 相对于轮胎轴向不超过7度,其中曲率半径TR2为曲率半径TR1的0.60〜0.95倍,多个刀槽花纹设置在 肩部和每个刀槽花纹从胎面边缘朝向轮胎赤道面延伸,而不超过肩部。