发明名称 |
FAHRZEUGREIFEN MIT EINEM NIEDRIGEN ROLLWIDERSTAND |
摘要 |
A low rolling resistance tire (1) for vehicles is described which comprises at least one belt layer (7) coaxially extending around at least one carcass ply (3), a composite tread (10) coaxially extending around the belt layer (7) and comprising a radially outer layer (12) an a radially inner layer (11), wherein the ratio between the modulus of elasticity E' at 70 DEG C of the radially inner layer (11) and the modulus of elasticity E' at 70 DEG C of the radially outer layer (12) is comprised between 1.1 and 3, and the ratio between the value of tang delta at 70 DEG C of the radially inner layer (11) and the value of tang delta at 70 DEG C of the radially outer layer (12) is lower than 0.8. Advantageously, the tire (1) achieves a better compromise between the characteristics of rolling resistance, handling and comfort with respect to what is obtainable from known tires for the same type of use. <IMAGE> |
申请公布号 |
AT338643(T) |
申请公布日期 |
2006.09.15 |
申请号 |
AT20000203473T |
申请日期 |
2000.10.06 |
申请人 |
PIRELLI TYRE S.P.A. |
发明人 |
AMADDEO, ANGELA;SERRA, ANTONIO;ISOLA, MARIO |
分类号 |
B60C11/00;B29D30/06;B29D30/52;B29D30/56;B60C1/00;B60C9/04;B60C9/18;B60C11/18;(IPC1-7):B60C11/18 |
主分类号 |
B60C11/00 |
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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