Method of making a unitary pattern assembly
CA 1064673 A · Owner: United Technologies Corporation · Inventors: Day, Edward G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention involves a method of making a unitary pattern assembly which is useful in forming investment shell molds for the conventional and directional solidification of molten metals and alloys. It comprises providing a fixture having first and second pattern capturing means, providing a mold structure having a cavity, positioning the mold structure and fixture to expose the capturing means to the cavity forming a, pattern in the cavity and removing the mold structure from the pattern. A unitary pattern assembly comprising a fixture and pattern fixedly captured therein is obtained. Multiple patterns may also be captured in the fixture. The method is especially suitable for making a …
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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 October 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 23, 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.