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:
Nov. 06, 2007
Filed:
Aug. 30, 2004
Applicants:
John R. Bradley, Clarkston, MI (US);
John E. Carsley, Clinton Township, MI (US);
Inventors:
John R. Bradley, Clarkston, MI (US);
John E. Carsley, Clinton Township, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Apparatus and methods are disclosed for applying electromagnetic force (EMF) to flanging and hemming metal panels to form a hemmed panel assembly. First and second apparatus and method steps use a translating EMF coil to flange a sheet and to finish a hem by progressive non-planar bending. An alternate embodiment uses EMF hemming for difficult-to-hem portions of a flange and optionally precedes this with conventional hemming of straight hem portions.