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:
Jan. 20, 2015
Filed:
Dec. 29, 2008
Jesse J. Arnold, Simpsonville, SC (US);
John Calloway Moreland, Greer, SC (US);
Jesse J. Arnold, Simpsonville, SC (US);
John Calloway Moreland, Greer, SC (US);
Compagnie Generale des Etablissements Michelin, Clermont-Ferrand, FR;
Michelin Recherche et Technique S.A., Granges-Paccot, CH;
Abstract
Heavy vehicle tire treads and/or undertread constituted at least in part from a rubber composition comprising between 80 and 100 phr of a natural rubber and between 0 and 20 phr of a synthetic polyisoprene rubber, a reinforcement filler comprising a) between 30 and 50 phr of a highly dispersible silica and b) a carbon black in an amount of between (0.75)C phr and (1.25)C phr as determined by the equation C=−0.8Si+44.3, wherein Si is the amount of the highly dispersible silica, a silane coupling agent and a sulfur curing system comprising between 1.5 and 3 phr of free sulfur and between (0.9)A phr and (L 1)A phr of a sulfenamide accelerator, wherein A is determined by a formula that is a function of the sulfur quantity and the silica weight fraction of the total reinforcement filler.