Method for making metallic sandwich structures
CA 1052081 A · Owner: Rockwell International Corporation · Inventors: Hamilton, Charles H.; Ascani, Leonard A. (Jr.)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for fabrication of metallic sandwich structures in which metal blanks, preferably of a titanium alloy are joined at selected areas and expanded superplastically to form a desired sandwich structure. Various techniques for joining, preferably diffusion bonding, selected areas of the metal blanks are disclosed. These include treating the metal blanks at selected areas to prevent bonding at those areas and selective application of pressure during bonding. In the preferred embodiment, the metal blanks are positioned in a stack after being treated at selected areas. The stack is positioned relative to shaping members and heated to a temperature suitable for superplastic forming and …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.