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. 01, 1981
Filed:
Jul. 28, 1980
Charles Flechtner, Clermont-Ferrand, FR;
Yves Herbelleau, Riom, FR;
Jean Pommier, Clermont-Ferrand, FR;
Compagnie Generale des Etablissements Michelin, Clermont-Ferrand, FR;
Abstract
In order to prevent the edges of the crown reinforcement of radial carcass tires whose tread contains oblong elements in relief or blocks (tires for earth-moving vehicles and for drive wheels of agricultural tractors) from deforming during the vulcanization of these tires in the vulcanization mold, at least some of these oblong blocks are provided with a furrow whose depth is between 1/2 and 6/5 of the radial height of the oblong block in question and whose length is not greater than 1/3 of the length of the oblong block. The element in relief which, within the mold, serves to mold the furrow within the oblong block of the tread prevents the folding and/or deformation of the crown reinforcement of the tire.