Title:
A TREAD FOR IMPROVING SNOW PERFORMANCE
Document Type and Number:
WIPO Patent Application WO/2021/106102
Kind Code:
A1
Abstract:
Tread for a tire being provided with a plurality of grooves (3) extending in an orientation having a non-zero angle A with circumferential orientation, at least two circumferentially adjacent grooves (3) delimiting a contact element (4); the contact element (4) having at least one incision (5) extending in an orientation substantially parallel to the grooves (3), the contact element being delimited into sub-contact elements (6), on a plane perpendicular to the orientation in which the plurality of grooves being extending and to the contact face, each sub-contact elements (6) having a length Ls between the plurality of grooves and the at least one incision or between two incisions, an outermost portion of each the sub-contact element (6) having a radius Rs smaller than a radius Rt of an outline OL of the tread at an intersection between the outline OL and the outermost portion, the radius Rs of the outermost portion of the sub-contact elements is smaller than or equal to 16.0 mm and greater than or equal to 5.0 mm.
Inventors:
UCHIDA TOMOTAKE (JP)
Application Number:
PCT/JP2019/046346
Publication Date:
June 03, 2021
Filing Date:
November 27, 2019
Export Citation:
Assignee:
MICHELIN & CIE (FR)
International Classes:
B60C11/13; B60C11/03; B60C11/12
Domestic Patent References:
| WO2014099847A1 | 2014-06-26 | |||
| WO2004011282A1 | 2004-02-05 |
Foreign References:
| JPH10244813A | 1998-09-14 | |||
| JP2003154527A | 2003-05-27 | |||
| EP2894050A1 | 2015-07-15 | |||
| EP2977230A1 | 2016-01-27 | |||
| JPH07101209B2 | 1995-11-01 | |||
| JPH10244813A | 1998-09-14 |
Other References:
SAM ELLAPIERRE-YVES FORMAGNEVASILEIOS KOUTSOSJANE R. BLACKFORD: "Investigation of rubber friction on snow for tires", 38TH LEEDS-LYONS SYMPOSIUM ON TRIBOLOGY, 6 September 2011 (2011-09-06)
Attorney, Agent or Firm:
WADA Yukihiro (JP)
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