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. 02, 2010
Filed:
Oct. 23, 2008
Applicants:
Peter Friedman, Ann Arbor, MI (US);
Warren Copple, Trenton, MI (US);
George Luckey, Jr., Dearborn, MI (US);
Richard Allor, Livonia, MI (US);
Inventors:
Peter Friedman, Ann Arbor, MI (US);
Warren Copple, Trenton, MI (US);
George Luckey, Jr., Dearborn, MI (US);
Richard Allor, Livonia, MI (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21D 26/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a method and apparatus for forming a sheet of ductile material by superplastic forming. The gas pressure is varied to control the material flow during the forming process. Accordingly, the gas pressure can be increased or decreased to control the rate of deformation of the workpiece. Accordingly, the method and apparatus contemplates the use of predetermined pressure profiles to reduce the overall forming time.