发明名称 |
All season type tire tread. |
摘要 |
An all season type tire tread (11) comprises a plurality of laterally extending grooves (36) having curved portions adjacent to each lateral edge (TE1, TE2) of the tread, said curved portions extending in circumferentially opposite directions. Axially spaced zig-zag shaped grooves (4-8) extend circumferentially around the tread, every fourth leg of a zig-zag groove being coincident with a portion of a laterally extending groove (36). Two legs adjacent to said fourth leg connect the laterally extending grooves to short semi-blind grooves (19) having their central portion coincident with every other fourth leg of the zig-zag shaped groove. The various grooves cooperate to define block elements (20-25), arranged in circumferential rows (30-35) and having the shape of an "S" or of a "Z". The blocks can include a plurality of slots (50-53) and humps (29) can be located between neighboring blocks. <IMAGE>
|
申请公布号 |
EP0455925(A1) |
申请公布日期 |
1991.11.13 |
申请号 |
EP19900630247 |
申请日期 |
1990.12.18 |
申请人 |
THE GOODYEAR TIRE & RUBBER COMPANY |
发明人 |
GRAAS, MAURICE;CONSTANT, MICHEL |
分类号 |
B60C11/113;B60C11/03;B60C11/04;B60C11/11;B60C11/13 |
主分类号 |
B60C11/113 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|