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:
Apr. 20, 1999
Filed:
Oct. 22, 1997
Applicant:
Inventors:
Christophe Sachot, Villerable, FR;
Andre Laisement, La Chapelle Encherie, FR;
Michel Chartrain, Lunay, FR;
Assignee:
Lemforder Nacam, Vendome, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K / ;
U.S. Cl.
CPC ...
72402 ; 72408 ; 7237016 ; 7237004 ; 2989334 ;
Abstract
In a method of producing splines on a shaft, cold deformation without removal of chips is effected on the outside face of a small-thickness tube in a single operation. The cold deformation includes hammering the small-thickness tube by a conjugate and simultaneous action of beating and kneading. The depth of the splines can be as much as half the thickness of the tube.