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US07793692B2 Pneumatic tire tread having sipe that devolves into groove as tread wears 有权
具有轮胎胎面的气动轮胎胎面具有下降到凹槽中的轮胎胎面磨损

Pneumatic tire tread having sipe that devolves into groove as tread wears
摘要:
A pneumatic tire tread has tread elements formed by circumferential and/or lateral grooves. At least one tread element has a sipe that devolves from a constant width sipe having a three dimensional aspect in at least a portion of the radially outer portion of the sipe to a wider width groove at the base of the tread feature.
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