Invention Grant
- Patent Title: Vehicle tire comprising a tread composed of a plurality of compounds and a layer of circumferential reinforcement elements of variable pitch
- Patent Title (中): 车辆轮胎包括由多个化合物组成的胎面和可变节距的圆周增强元件层
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Application No.: US13140710Application Date: 2009-12-09
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Publication No.: US08925606B2Publication Date: 2015-01-06
- Inventor: Francis Bordoz , Alain Valle , Pascal Prost
- Applicant: Francis Bordoz , Alain Valle , Pascal Prost
- Applicant Address: CH Granges-Paccot FR Clermont-Ferrand
- Assignee: Michelin Recherche Techniques S.A,Compagnie Generale des Etablissements Michelin
- Current Assignee: Michelin Recherche Techniques S.A,Compagnie Generale des Etablissements Michelin
- Current Assignee Address: CH Granges-Paccot FR Clermont-Ferrand
- Agency: Cozen O'Connor
- Priority: FR0858727 20081217
- International Application: PCT/EP2009/066738 WO 20091209
- International Announcement: WO2010/069840 WO 20100624
- Main IPC: B60C9/20
- IPC: B60C9/20 ; B60C1/00 ; B60C9/22 ; B60C9/08 ; B60C15/00 ; B60C11/00
Abstract:
A tire comprising a reinforcing structure of the carcass type and comprising under the tread strip a crown reinforcing structure comprised of at least one layer of reinforcing elements. At least the surface of the tread strip comprises a first polymer compound extending at least into the region of the equatorial plane and at least one second polymer compound having physicochemical properties that differ from those of the first polymer compound, the crown reinforcing structure comprising at least one layer of circumferential reinforcing elements which are distributed in the transverse direction with a variable pitch and the pitch between the circumferential reinforcing elements being at a minimum in the region of the layer of circumferential reinforcing elements that radially face the ends of the first compound.
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