发明名称 |
PNEUMATIC TIRE |
摘要 |
The ride comfort and driving performance of a pneumatic tire 11 are improved while maintaining the high-speed durability and steering stability, in which an inclination angle A of steel cords 26, 27 in all belt plies 24, 25 constituting a belt layer 23 is not less than 45° with respect to an equator S of the tire, and a belt reinforcing layer 35 embedded with reinforcing cords substantially in parallel to the equator S is arranged between a belt layer 23 and a carcass layer 18, whereby an out-of-plane bending rigidity of the belt layer 23 in a circumferential direction can be lowered to make a longitudinal spring constant of the pneumatic tire 11 and uniformize the diameter of the belt reinforcing layer 35, and further a deformation amount of a tread portion 15 having a high bending rigidity can be made small. |
申请公布号 |
EP1837205(A1) |
申请公布日期 |
2007.09.26 |
申请号 |
EP20050806173 |
申请日期 |
2005.11.09 |
申请人 |
BRIDGESTONE CORPORATION |
发明人 |
MATSUMOTO, MASAYUKI;MATSUDA, KAZUHIKO;KUWAYAMA, ISAO;ISHIYAMA, MAKOTO;KOIDE, MASAFUMI;KAWAI, TAKASHI |
分类号 |
B60C9/18;B60C9/00;B60C9/20;B60C9/22;B60C11/00 |
主分类号 |
B60C9/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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