Title:
A TREAD FOR IMPROVING WINTRY PERFORMANCE
Document Type and Number:
WIPO Patent Application WO/2021/106103
Kind Code:
A1
Abstract:
Tread for a tire being provided with a plurality of grooves (3), at least two circumferentially adjacent grooves (3) delimiting a contact element (4), the contact element (4) having at least one incision and being delimited into at least two sub-contact elements (6), on a plane perpendicular to the orientation of grooves and to the contact face, each the sub-contact element (6) having a length Ls between a first frontal face and a second frontal face, an outermost portion of the sub-contact elements intersecting with the first frontal (41) face at a first edge (43) and with the second frontal face (42) at a second edge (44), the tread having an outline OL of a radius Rt at an intersection IS between the outline OL and the outermost portion, the outermost portion comprises a first portion (62) including the first edge and a second portion (63) including the second edge, the first portion has a first radius Rs and the second portion has a second radius Rg, and the first radius Rs is smaller than the second radius Rg.
Inventors:
UCHIDA TOMOTAKE (JP)
Application Number:
PCT/JP2019/046347
Publication Date:
June 03, 2021
Filing Date:
November 27, 2019
Export Citation:
Assignee:
MICHELIN & CIE (FR)
International Classes:
B60C11/13
Domestic Patent References:
| WO2014099847A1 | 2014-06-26 | |||
| WO2004011282A1 | 2004-02-05 |
Foreign References:
| JPH10244813A | 1998-09-14 | |||
| US20190225022A1 | 2019-07-25 | |||
| EP1283115A1 | 2003-02-12 | |||
| JPH07101209B2 | 1995-11-01 | |||
| JPS10244813B |
Attorney, Agent or Firm:
WADA Yukihiro (JP)
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