Invention Grant
- Patent Title: Variable surface area tire tread and tire
- Patent Title (中): 可变表面积轮胎胎面和轮胎
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Application No.: US13063199Application Date: 2008-09-11
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Publication No.: US09022083B2Publication Date: 2015-05-05
- Inventor: Stefan Voss , Jean-Marc D'Harcourt , Jeff Godsey
- Applicant: Stefan Voss , Jean-Marc D'Harcourt , Jeff Godsey
- Applicant Address: CH Granges-Paccot
- Assignee: Michelin Recherche et Technique S.A.
- Current Assignee: Michelin Recherche et Technique S.A.
- Current Assignee Address: CH Granges-Paccot
- Agency: Hahn Loeser & Parks LLP
- International Application: PCT/US2008/075940 WO 20080911
- International Announcement: WO2010/030276 WO 20100318
- Main IPC: B60C11/12
- IPC: B60C11/12 ; B60C11/13 ; B60C11/03 ; B29D30/06

Abstract:
Particular embodiments of the present invention include a multi-stage tire tread having a plurality of wear layers, each said layer being located at a different depth of the tire tread, the tread including one or more tread elements including a contact surface and having a first wear layer and a second wear layer, wherein the second wear layer is located below the first wear layer. The tire tread also includes a longitudinal groove extending in a longitudinal direction within the second wear layer of the tread element, wherein said longitudinal groove becomes exposed after a depth of the first wear layer has been worn. The tire tread further includes one or more lateral grooves extending from the longitudinal groove in a lateral direction within the second wear layer of the tread element. The invention also provides a mold element for forming portions of the multi-stage tread.
Public/Granted literature
- US20110168311A1 VARIABLE SURFACE AREA TIRE TREAD AND TIRE Public/Granted day:2011-07-14
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