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:
Oct. 06, 1987
Filed:
Dec. 09, 1985
Applicant:
Inventor:
Bernard Poulin, Conflans Sainte Honorine, FR;
Assignee:
Glaenzer Spicer, Poissy, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ; C21D / ;
U.S. Cl.
CPC ...
464115 ; 148 165 ; 464183 ;
Abstract
A transmission includes two constant-speed joints interconnected by a tubular shaft. The tubular shaft is made from a steel for thermochemical treatment and is welded at at least one of its ends to an element of an adjacent constant-speed joint before the thermochemical treatment of the latter. The two elements are subjected after their assembly to the same cementation or carbonitriding treatment.