Method and apparatus for forming a sheave from a flat disc of metal
CA 1056142 A · Owner: Don R. Hinderliter · Inventors: Hixson, Claude M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A method and apparatus for upset forming a flat circular disc of metal having a central opening therein into a sheave of the type having an annular peripheral groove for receiving a wire line therein the size and shape of said groove, corresponding to the diameter of said wire line; the disc has two flat side portions separated by the width of said disc and an outer diameter slightly larger than the outer diameter of the sheave to be produced; the apparatus by which the method of the present invention is carried out includes a pair of rotatable holding members rotatable on a common horizontal axis means for, moving the holders axially relatively towards and away …
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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 June 12, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 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.