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:
Jan. 21, 2014
Filed:
Apr. 14, 2011
Paul E. Krajewski, Troy, MI (US);
Michael H. Lovell, Leonard, MI (US);
Tiffanie E. Coe, Sterling Heights, MI (US);
Terry A. Kent, East China, MI (US);
Kevin R. Marks, Durand, MI (US);
William R. Rodgers, Bloomfield Township, MI (US);
Howard William Cox, Bloomfield Hills, MI (US);
William Parker, Garden City, MI (US);
Darrell W. Rebman, Kimball Township, MI (US);
John Collins, Troy, MI (US);
Paul E. Krajewski, Troy, MI (US);
Michael H. Lovell, Leonard, MI (US);
Tiffanie E. Coe, Sterling Heights, MI (US);
Terry A. Kent, East China, MI (US);
Kevin R. Marks, Durand, MI (US);
William R. Rodgers, Bloomfield Township, MI (US);
Howard William Cox, Bloomfield Hills, MI (US);
William Parker, Garden City, MI (US);
Darrell W. Rebman, Kimball Township, MI (US);
John Collins, Troy, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method and system for forming a part from a workpiece including a hollow portion, using a mandrel and a conventional press such as a stamping press includes filling the hollow portion of the workpiece with a mandrel material and transforming the mandrel material to form a mandrel. The mandrel material is removable from the formed part and may be recycled to form a mandrel for another workpiece.