Method and apparatus for bimetallic casting without metallurgical bond
CA 1068876 A · Owner: Trw Inc. · Inventors: Vishnevsky, Constantine; Graham, Lawrence D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for bimetallic casting in which a shape such as an airfoil which has anisotropic metallurgical properties is bonded to a second shape by casting. A disposable pattern with a configuration desired in the second shape is attached to the first shape and an investment mold is formed about the pattern in the usual investment mold making procedure. A barrier layer is provided at least about those portions of the first shape which are to be bonded to the second shape to prevent interfacial melting or diffusion bonding at the union between the first and second shapes. The pattern material is then removed leaving an investment, casting mold having a casting cavity conforming to …
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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 January 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
- 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
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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.