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. 12, 1978
Filed:
Nov. 15, 1977
Jean Walrave, Meylan, FR;
Eurotungstene, Grenoble, FR;
Abstract
The invention relates to a process of making small diameter non-skid metallic studs, for tires, composed of a hard material small rod and of a metallic sheath having an elongated longitudinal axis. The sheath includes a fitting or mounting socket for the small rod, at least one small anchoring collar, and a narrowed intermediate section of smaller diameter than the lower and upper adjacent sections. The process comprises forming a sintered rough shaped sheath of at least 85% of theoretical or maximum density which sheath includes the rod's fitting; introducing the small rod in its fitting, leaving an empty space less than 0.6 mm between the rod and the fitting's base; and bringing the sheath to its final shape through trimming or rolling, in particular, in the narrowed section, while holding tightly the sheath's section surrounding the small rod.