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:
Dec. 15, 2015
Filed:
Dec. 03, 2010
Sylvie Lhospitalier, Ennezat, FR;
Sylvie Lhospitalier, Ennezat, FR;
COMPAGNIE GENERALE DES ESTABLISSEMENTS MICHELIN, Clermont-Ferrand, FR;
MICHELIN RECHERCHE ET TECHNIQUE S.A., Granges-Paccot, CH;
Abstract
Method of designing a tire for the steered axle of a heavy goods vehicle, having a nominal sidewall height F, having a tread in the new state having a maximum total width Lo for maximum contact with the ground and provided with at least four circumferential grooves each extending between the tread surface and a groove bottom, these grooves delimiting three intermediate ribs and two edge ribs axially bounding the tread, each edge rib having two lateral walls, one of which, known as the internal lateral wall, having a height PREp measured with respect to the bottom of the groove delimiting the edge rib, this internal lateral wall having, when viewed in section on a plane containing the axis of rotation, an inclination DEp, each edge rib having a width LEp greater than the width of each of the intermediate ribs, by iteratively determining values for the dimensions LEp, PREp and DEp that satisfy the following relationship:()<1.105769231×, with()=−303.528−2.00675×+10.2755×+81.0414×−0.052551×−0.0825991×+0.225564×−0.111262×−0.209215×−2.5831×. Also, the tire having edge rib widths and lateral wall angles thus determined.