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:
Jul. 07, 1992
Filed:
Sep. 28, 1990
Edward M Remick, Taylors, SC (US);
Michelin Recherche et Technique, Fribourg, CH;
Abstract
Significant improvements in heavy and medium duty truck tire wear and endurance are a result of this drive axle tire tread design. The traction and center tread blocks are shaped to give a uni-directional sculpture where the blocks and zigzag grooves regress from the mid-circumferential plane with forward rotation of the tire. The polygonal shaped traction tread blocks have a leading face with a lead slope angle (with respect to a normal from the surface area) greater that the trail slope angle of the trailing face. The lateral groove bottom surface configuration is a circle in the plane parallel to the principal tangential stresses on the surface area of the traction tread block due to a tractive effort of driving or braking. The result is a drive axle tread design with a uniform wear pattern, improved wear rates and improved endurance from groove fatigue while maintaining high levels of snow, wet and dry traction, rolling resistance, casing endurance, and noise abatement.