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:
Nov. 14, 2006
Filed:
Dec. 20, 2002
Howard James Price, Preston, GB;
Howard James Price, Preston, GB;
BAE Systems plc, Farnborough, GB;
Abstract
A process of forming a structure by diffusion bonding and superplastic forming includes forming a pack from at least one skin sheet and at least one core sheet, placing the pack in a mould and heating it. A gas is injected between the skin sheet and the core sheet to urge the skin sheet against an internal face of the mould, thereby forming a cavity. Gas is also injected on the other side of the core sheet to urge it against the skin sheet, and gas pressure is maintained on said side of the core sheet thereby forming a diffusion bond between the skin sheet and the core sheet. Helium gas is used to maintain a regulated pressure of helium in the cavity between the skin sheet and the core sheet, which allows such gas trapped between the skin sheet and the core sheet to diffuse through the core sheet.