| 摘要 |
PROBLEM TO BE SOLVED: To realize excellent drainage properties without a lowering of tread's contact with the ground or generation of one-sided abrasion. SOLUTION: In a block 3 divided by a circumferential groove 1 and a width- direction groove 2, a single sipe 6 is provided extending in simultaneously the circumferential direction and opened at each of wall faces 4 and 5 on the stepping-in side and the kicking-out side of the block 3, and a plurality of narrow grooves 7 are provided communicating to each of the wall faces 4 and 5 on the stepping-in side and the kicking-out side. COPYRIGHT: (C)2003,JPO |
