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. 09, 1999
Filed:
Aug. 27, 1997
Helge Himmeroeder, Barrie, CA;
Tesma International Inc., Concord, CA;
Abstract
A method for forming a toothed wheel which comprises the steps of providing a circular sheet metal blank of uniform thickness, cold forming an outer peripheral portion thereof into a thickened rim of uniform generally rectangular cross-sectioned configuration having (1) an outer periphery which does not exceed the outer periphery of the toothed wheel to be formed by more than approximately two percent (2) a radial thickness at least 2.0 mm greater than the tooth height of the toothed wheel to be formed, and (3) an axial thickness at least twice the uniform thickness of said blank, the cold forming comprising progressively moving a predetermined marginal peripheral portion of the metal blank having a cross sectional outline radially inwardly and axially outwardly while the integral integrity of the metal within the cross sectional outline is maintained without merging portions of the cross sectional outline together, and cutting a series of teeth in the periphery of the thickened rim by a hobbing operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile