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, 1982
Filed:
May. 16, 1980
Amit K Ghosh, Westlake Village, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
A sheet of material is held in a die opposite a forming surface of the die, and gas pressure is applied to both sides of the sheet. The pressure creates a compressive stress in the sheet thickness direction sufficient to cause plastic flow. By maintaining the pressure higher on the side of the sheet opposite to the forming surface, the sheet bends and expands toward the die forming surface. This pressure differential can be increased as necessary to bend the sheet into the crevices which make up the details of the forming surface. The sheet may be heated during forming to lower the compressive stress which is required to cause it to flow plastically.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile