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:
Feb. 04, 2003
Filed:
Nov. 04, 1996
Method for producing a ring collar, notably for a clutch mechanism in particular for a motor vehicle
Applicant:
Inventors:
Ernesto Lanzarini, Mondovi, IT;
Mario Drago, Alba, IT;
Assignee:
Valeo, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P 1/700 ;
U.S. Cl.
CPC ...
B23P 1/700 ;
Abstract
A method for making a frustro-conical ring collar by providing a metal band, helically winding the band, cutting off a length of the band which corresponds to one lead of the helix, axially acting on the two ends of the band length to place them in facing positions, welding together the aligned ends to form a cylindrical ring, an conferring a frustro-conical shape to the ring.