The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2018
Filed:
Aug. 14, 2014
Compagnie Generale Des Etablissements Michelin, Clermont-Ferrand, FR;
Michelin Recherche ET Technique S.a., Granges-Paccot, CH;
Frédéric Bourgeois, Clermont-Ferrand, FR;
François-Xavier Bruneau, Clermont-Ferrand, FR;
Patrice Fraysse, Clermont-Ferrand, FR;
Emmanuel Igier, Clermont-Ferrand, FR;
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand, FR;
Abstract
Tire tread has a central rib (-) and two lateral ribs (-) which are separated by circumferential grooves (-). A first lateral rib () adjacent to the outer axial edge of the tread and a central rib have a first portion () the axial width of which exceeds 20% of the axial width of the relevant rib made from a first rubber composition containing an elastomer and a reinforcing filler consisting predominantly of carbon black, and an axially adjacent second portion () made of a second rubber composition containing an elastomer and a reinforcing filler a minority proportion of which consists of carbon black. The second rubber composition has a tan d0 value which is less than the tan d0 value of the first rubber composition, the tan d0 values being measured at a temperature of 0 C and under a stress of 0.7 MPa.