Invention Application
- Patent Title: A NOISE IMPROVING TREAD
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Application No.: US17621589Application Date: 2020-06-26
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Publication No.: US20220355626A1Publication Date: 2022-11-10
- Inventor: Joris PROU , Jacques BABAUD
- Applicant: Compagnie Generale Des Etablissements Michelin
- Applicant Address: FR Clermont-Ferrand
- Assignee: Compagnie Generale Des Etablissements Michelin
- Current Assignee: Compagnie Generale Des Etablissements Michelin
- Current Assignee Address: FR Clermont-Ferrand
- Priority: JPPCT/JP2019/025292 20190626
- International Application: PCT/JP2020/025174 WO 20200626
- Main IPC: B60C19/00
- IPC: B60C19/00 ; B60C11/24 ; B60C11/00

Abstract:
A tire having a contact face of a width TW is provided. The contact face is intended to come into contact with ground during rolling. The tread is provided with at least one groove of a depth D provided with a wear indicating means that extends generally in a circumferential orientation and opens to the contact face. The tread comprises a center region and a pair of shoulder regions that are positioned on two axial sides of the center region. The shoulder regions each comprise a shoulder rubber layer of a thickness ts made of a shoulder rubber composition different from a rubber composition constituting the tread. A shear storage modulus G′ of the shoulder rubber composition measured at 23° C., 10 Hz and 10% of strain is less than or equal to 1.0 MPa.
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