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:
Jun. 29, 1999
Filed:
Nov. 14, 1997
Applicant:
Inventor:
John Robert Fischer, Seattle, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ; B21D / ;
U.S. Cl.
CPC ...
72 60 ; 72709 ; 294211 ;
Abstract
A superplastically formed part having tailored thickness in particular areas Includes a formed blank having a preformed portion and a formed portion. The preformed portion is preformed as a bulge into a recess in a die lid, and then the bulge is reversed into a cavity in a die base as a prethinned area which delivers unthinned portions of the blank for final forming to regions of the die base cavity over which thinned portions of the blank would otherwise be formed and further thinned by final forming.