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:
May. 15, 2018
Filed:
Sep. 08, 2011
Sébastien Fugier, Clermont-Ferrand, FR;
Nicolas Jamot, Clermont-Ferrand, FR;
Bertrand Fraenkel, Clermont-Ferrand, FR;
Sébastien Fugier, Clermont-Ferrand, FR;
Nicolas Jamot, Clermont-Ferrand, FR;
Bertrand Fraenkel, Clermont-Ferrand, FR;
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand, FR;
MICHELIN RECHERCHE ET TECHNIQUE S.A., Granges-Paccot, CH;
Abstract
The invention relates to an asymmetric tread for a tire comprising a plurality of basic patterns, for each of which there is defined a sipes density corresponding to where i is the number of sipes in the pattern, li is the length of the isipe on the tread surface, P is the pitch of the basic pattern and Wm is the width of the basic pattern, a sipes orientation level corresponding to where αi is the positive or negative angle formed on the tread surface by the isipe with the transverse direction and |αi|≤45 degrees and a steering pull criterion for the basic pattern corresponding to The sipes density is greater than or equal to 60 μm/mm, the sipes orientation level is greater than or equal to 1.5 degrees/mm and the steering pull criterion for the pattern is less than or equal to 0.2. The tread comprises an inboard half-tread adjacent to an inboard sidewall of the tire, the sipes orientation level relating to the inboard half-tread being greater than 2 degrees/mm.