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:
Aug. 18, 2015
Filed:
Dec. 07, 2010
Lucien Bondu, La Roche Noire, FR;
Lucien Bondu, La Roche Noire, FR;
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand, FR;
Michelin Recherche et Technique S.A., Granges-Paccot, CH;
Abstract
Technique for improving the durability of the beads of a radial tire for a heavy vehicle of the civil engineering type, by reducing the rate of spread of cracks initiated at the surface of contact between a first filler polymer material () which is radially innermost and in contact with the bead wire core () and a second filler polymer material () radially on the outside of the first filler polymer material. A transition element (), made of a transition polymer material, of contact thickness (e), is in contact, via its radially internal face (), with the first filler polymer material () and in contact, via its radially external face (), with the second filler polymer material (), and the elastic modulus at 10% elongation of the transition polymer material is somewhere between the respective elastic moduli at 10% elongation of the first and second filler polymer materials.