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. 05, 1999
Filed:
Jul. 08, 1998
Applicant:
Inventors:
Friedrich Klaas, Aalen, DE;
Helmut Bogel, Aalen, DE;
Assignee:
Cosma International Inc., Concord, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72 61 ; 72 58 ; 298881 ;
Abstract
The invention relates to a hollow camshaft consisting of a metal or metal alloy or plastic which can be cold-formed and heat-treated and has a fiber flow parallel to the exterior contours of the camshaft, and to a method for producing it comprising the steps of: