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:
Jan. 06, 1981
Filed:
Mar. 05, 1979
Roger S Raymond, Redondo Beach, CA (US);
Abstract
Apparatus for heat flattening and/or forming titanium sheet material under heat and pressure using thermoclamps fabricated of materials having different thermal expansion properties. Upper and lower dies are made of one alloy having a large thermal expansion while tie bars between the two dies are made of an alloy having low thermal expansion. During heat cycles, the difference in expansion causes the tie bars to close the gap between the dies and apply pressure to the titanium sheet between. In an alternate arrangement, the thermal clamping action coins a bead into a diaphragm to make a vacuum tight seal so that the atmospheric pressure in the oven produces the forming or flattening of the sheet.