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:
May. 14, 2002
Filed:
Nov. 21, 2000
Applicant:
Inventors:
Chi-Mou Ni, Troy, MI (US);
James Chatterley, Washington, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 2/602 ;
U.S. Cl.
CPC ...
B21D 2/602 ;
Abstract
Apparatus and method for hydroforming multiple components simultaneously with a smaller capacity press than would be possible using conventional hydroforming methods and apparatus. Die pairs are positioned with multiple die cavities in series so that the separating force transmitted to a press holding the dies equals the force developed in a single die cavity, even though multiple components are being formed in the die cavities.