Wire drawing die and method of making the same
CA 1086261 A · Owner: Fort Wayne Wire Die, Inc. · Inventors: Corbin, Lawrence W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wire drawing die employing a polycrystalline aggregate of synthetic diamond includes a metal casing having flat parallel front and back sides. A first relatively shallow, annular cavity having a bottom wall is formed in the front casing side, and a second cylindrical cavity having a bottom wall is formed in the bottom wall of the first cavity concentric therewith and having a smaller diameter than the first cavity. A cylindrical metal plug having top and bottom ends is secured in the second casing cavity, the bottom end having a concentric cylindrical cavity formed therein having a bottom spaced from the top plug end. A cylindrical metal blank having opposite ends and a concentric core …
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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 September 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 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
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.