发明名称 |
TREAD FOR A PNEUMATIC TIRE |
摘要 |
A tread (2) for a pneumatic tire (1) has a central portion defining two circumferentially extending center ribs (22, 23) having an axial width RW, and RN2 ranging from 5 % to 25 % of the tread width TW. The centermost circumferentially extending groove (8) has on both sides a tapered groove wall edges which form with a plane parallel to the equational plane acute angle alpha 1 and alpha 2 ranging between 1 and 10 DEG . The tread height near both edges of the centermost groove extend radially above the average tread height a maximum extra tread height of between .3 mm and 1.7 mm. The extra tread height diminishes progressively from the groove edges P0P1 towards the respective shoulder (3, 4) a distance not exceeding 10 % of the tread width. |
申请公布号 |
WO9917944(A1) |
申请公布日期 |
1999.04.15 |
申请号 |
WO1997US18031 |
申请日期 |
1997.10.03 |
申请人 |
THE GOODYEAR TIRE & RUBBER COMPANY;FONTAINE, JEAN, FRANCOIS, LEON |
发明人 |
FONTAINE, JEAN, FRANCOIS, LEON |
分类号 |
B60C11/04;B60C11/11;B60C11/13 |
主分类号 |
B60C11/04 |
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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