| 发明名称 |
Pneumatic tire |
| 摘要 |
A pneumatic tire including, on a tread surface, rib-like land portions partitioned by a plurality of main grooves and/or a plurality of block-like land portions partitioned by lug grooves extending in a tire width direction, wherein sipes or small holes are provided in the land portions, multiple protrusions are disposed having a height that is less than a depth of the sipes or small holes, and the multiple protrusions are disposed so as to form a shape wherein a flow path width increases at a flow path convergence point where flow paths formed in a mesh-like shape between the protrusions converge from at least three directions, and a ratio of an area of the multiple protrusions to an area of a block-like land portion is 0.5 or greater and 0.9 or less. |
| 申请公布号 |
US8739845(B2) |
申请公布日期 |
2014.06.03 |
| 申请号 |
US201113046613 |
申请日期 |
2011.03.11 |
| 申请人 |
The Yokohama Rubber Co., Ltd. |
发明人 |
Furusawa Hiroshi |
| 分类号 |
B60C11/11 |
主分类号 |
B60C11/11 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A pneumatic tire comprising, on a tread surface,
rib-like land portions partitioned by a plurality of main grooves, and/or a plurality of block-like land portions partitioned by lug grooves extending in a tire width direction, wherein sipes or small holes are provided in the land portions, multiple protrusions are disposed on the land portions having a height that is less than a depth of the sipes or small holes, the multiple protrusions are disposed on the land portions so as to form a plurality of flow paths there between, wherein a width of an individual flow path increases at a flow path convergence point where flow paths between the protrusions converge from at least three directions, and a ratio of an area of the multiple protrusions to an area of a block land portion is 0.5 or greater and 0.9 or less.
|
| 地址 |
JP |
