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. 16, 1999
Filed:
Sep. 27, 1996
Applicant:
Inventor:
Ken K Yasui, Huntington Beach, CA (US);
Assignee:
McDonnell Douglas Corporation, Huntington Beach, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P / ; E04C / ; B21D / ; B23K / ;
U.S. Cl.
CPC ...
2989732 ; 294211 ; 5278415 ; 72 61 ; 228190 ;
Abstract
The method of forming SPF/DB structures having reinforcement webs that are constructed by welding two or more sheets together along an interrupted seam and placing the core so formed between two face sheets, expanding the face sheets into a die by providing pressurized inert gas through one of the face sheets and through a pressure equalization hole drilled through a sealed area formed by the seam, and using pressurized inert gas to expand the core sheets into webs that extend between the face sheets.