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. 27, 2015
Filed:
Dec. 02, 2009
Jacques Barraud, Clermont-Ferrand, FR;
Agnès Poulbot, Les Martres D'Artiere, FR;
Jacques Barraud, Clermont-Ferrand, FR;
Agnès Poulbot, Les Martres D'Artiere, FR;
Compagnie Generale des Etablissements Michelin, Clermont-Ferrand, FR;
Michelin Recherche et Techniques S.A., Granges-Paccot, CH;
Abstract
Tire tread band having a tread surface having at least two wearing layers, a first wearing layer formed by raised elements each having a contact surface, having at least grooves of circumferential orientation, and intended to contact the road surface when new, and at least one wearing layer in contact with the road surface after the first layer has entirely worn away, and containing at least one channel extending in the circumferential direction, and opening onto the tread surface when the wearing layer that precedes it has completely worn away, each wearing layer distinct from the first wearing layer, having transverse incisions distributed in the circumferential direction, extending from a channel of the layer in a direction which is not circumferential, opening fully or partially into at least one other circumferentially oriented channel or groove, irrespective of the level of wear of the other wearing layer.