Invention Grant
- Patent Title: Tread comprising relief elements covered by a specific mixture
- Patent Title (中): 胎面包括由特定混合物覆盖的浮雕元素
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Application No.: US10578048Application Date: 2004-10-29
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Publication No.: US08186401B2Publication Date: 2012-05-29
- Inventor: Stéphanie Cambon , Didier Vasseur
- Applicant: Stéphanie Cambon , Didier Vasseur
- 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
- Agent Cozen O'Connor
- Priority: FR0312740 20031030
- International Application: PCT/EP2004/012239 WO 20041029
- International Announcement: WO2005/044594 WO 20050519
- Main IPC: B60C1/00
- IPC: B60C1/00 ; B60C11/00

Abstract:
A tire tread comprising a plurality of elements in relief (1) comprising a contact face (2) intended to come into contact with the roadway during travel and lateral faces (13, 14, 15, 16), the intersection of each lateral face with the contact face forming a ridge (23, 24, 25, 26). The tread also comprises a plurality of cutouts (3, 4) in the form of grooves and/or incisions, said cutouts being defined by facing main faces. Each tread pattern element (1) is formed with at least one rubber mix (referred to as “base mix”). This tread, viewed in section in a plane containing the thickness of this tread, has at least one face defining at least one cutout covered at least in part with a second rubber mix, referred to as “covering mix”, this part having covering mix extending when new over a height Hr at least equal to 30% of the height H of the face, wherein at least one first base mix opens on to the contact face (2) when new or at the latest after wear at most equal to 10% of the height Hr. The base mix has an amount of carbon black greater than 2 phr of black and the covering mix has an amount of carbon black greater than 0 phr and at most equal to 2 phr.
Public/Granted literature
- US20080041508A1 Tread Comprising Relief Elements Covered By A Specific Mixture Public/Granted day:2008-02-21
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