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. 12, 2009
Filed:
Dec. 09, 2005
Robert Radulescu, Perignat-les-Sarlieve, FR;
Eric DE Benedittis, Saint-Beauzire, FR;
Robert Radulescu, Perignat-les-Sarlieve, FR;
Eric De Benedittis, Saint-Beauzire, FR;
Michelin Recherche et Technique S.A., Granges-Paccot, CH;
Abstract
A tread provided with a plurality of cutouts of essentially transverse orientation and characterized in that when new, some of the transverse cutouts form on the running surface hollowed zones of average width Lt greater than or equal to 2 mm and of maximum depth Pt at most equal to 80% of the thickness Pb of tread to become worn, the other transverse cutouts forming on the same running surface incisions of average width Li less than 2 mm and of depth Pi at most equal to Pt. A plurality of the incisions extending by hollowed zones such that after homogenous wear of the tread the volume Vof the hollowed zones opening on to the new running surface is between 50% and 150% of the volume Vformed by the hollowed zones when new.