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:
Dec. 02, 1997
Filed:
Sep. 27, 1996
Applicant:
Inventor:
Ken K Yasui, Huntington Beach, CA (US);
Assignee:
McDonnell Douglas Corporation, Huntington Beach, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72 60 ; 72709 ; 294211 ;
Abstract
An improved die for a superplastic formation process and the process that uses an interface for pressurized gas that is part of the forming die so that tube welding to the forming pack can be eliminated. In one embodiment, the interface is fixed to the die and in a second, for use to pressurize the interior volume of finished parts with inert gas when the finished parts are to be removed from the die hot (1400.degree. F.), the interface becomes welded to the pack during the forming process so that the interior of the part can be flooded with inert gas during the cool down process.