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:
Mar. 13, 1984
Filed:
Jun. 04, 1982
Jean-Pierre Cesar, Sayat, FR;
Jean-Louis Charvet, Clermont-Ferrand, FR;
Compagnie Generale des Etablissements Michelin, Clermont-Ferrand, FR;
Abstract
In order to obtain a bead ring for tires which is both lighter and stronger than the known bead rings, the bead ring is formed of an annular core, for example of steel, surrounded by at least one layer formed of at least one strand of continuous nonmetallic filaments which are practically parallel to each other and free of impregnation, which strand is wound around the core in the same direction to a layer thickness at least equal to twice the average diameter of a filament and with a winding pitch p less than 2.sqroot.ac (in which a is the radius of a circle equivalent to the perimeter of the cross section of the core and c is the average circumference of the core) and a twist in the same direction as the winding and equal to one turn per pitch.