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    • 24. 发明授权
    • Pneumatic radial tire including beveled acute angle corner portions
    • 气动子午线轮胎包括斜角锐角部分
    • US06213180B1
    • 2001-04-10
    • US09041022
    • 1998-03-12
    • Yasuo Himuro
    • Yasuo Himuro
    • B60C1103
    • B60C11/11B60C11/0302B60C11/13B60C2011/0374B60C2011/0388
    • A pneumatic radial tire for passenger car has a directional tread pattern comprising many blocks formed in a tread portion by a plurality of circumferential grooves extending in a circumferential direction of the tire and a plurality of directional slant grooves obliquely extending with respect to the circumferential direction, wherein at least a part of the directional slant grooves is branched from the circumferential groove near to the pattern center and extends toward and is opened at an end of a ground contact region of the tread, and at least a part of corner portions of each of the blocks forms an acute angle of 10-60° defined by the circumferential groove and the directional slant groove; and a surface of the corner portion of the block having an acute angle of 10-60° is beveled over a distance of 10-30 mm from a tapered end thereof in a longitudinal direction so as to gradually shallow from the tapered end toward a width widened portion of the block in both stepping-in and kicking-out sides of the block.
    • 一种用于客车的充气子午线轮胎具有定向胎面花纹,其包括通过在轮胎的周向延伸的多个周向槽和形成在胎面部的多个花纹块,以及相对于圆周方向倾斜延伸的多个方向倾斜槽, 其中所述方向倾斜槽的至少一部分从所述周向凹槽分支到所述图案中心附近并且在所述胎面的接地区域的端部处延伸并且在所述胎面的接地区域的端部处开口,并且所述至少一部分角部 这些块形成由周向槽和方向倾斜槽限定的10-60°的锐角; 并且具有10-60°的锐角的块的角部的表面在其长度方向上与其锥形端部相距10-30mm的距离倾斜,从而从锥形端向宽度逐渐变浅 在块的踩踏和踢出两侧的块的加宽部分。