发明名称 |
Radial runflat passenger tire with improved tread contour with decoupling grooves |
摘要 |
A passenger tire having a tread, a casing with two sidewalls, one or more radial plies extending from and wrapped about two annular beads and a belt reinforcement structure located radially between the tread and the piles. The tread has a central rib with a first contour-defining curve extending outwards from the mid centerline of the tire towards the sidewalls and a pair of side ribs each having a second contour-defining curve disposed between the central rib and the sidewalls. The first and second contour-defining curves each have first and second radii disposed such that the meeting point of first and second adjacent contour-defining curves cannot contain a single line that is mutually tangential to the first and second adjacent contour-defining curves. First and second circumferential decoupling grooves are disposed on either side of the centerline at the meeting point of the first and second adjacent contour-defining curves, and define a circumferential line at the bottom of the grooves which is a region of greater flexibility than the adjacent ribs of the tire tread to decouple a sidewall bending stresses from the central rib. |
申请公布号 |
US6408909(B1) |
申请公布日期 |
2002.06.25 |
申请号 |
US20000554469 |
申请日期 |
2000.05.11 |
申请人 |
THE GOODYEAR TIRE & RUBBER COMPANY |
发明人 |
NGUYEN GIA VAN |
分类号 |
B60C9/08;B60C11/01;B60C15/00;B60C17/00;(IPC1-7):B60C9/00;B60C11/11;B60C101/02;B60C115/00 |
主分类号 |
B60C9/08 |
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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