Methods and apparatus for continuous extrusion
CA 1107686 A · Owner: Western Electric Company, Incorporated · Inventors: Ahmed, Nazeer; Fuchs, Francis J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ahmed, N. 7-128, - 8 -, METHODS AND APPARATUS FOR CONTINUOUS EXTRUSION Abstract of the Disclosure, An annular groove (35) is located in an outer surface of an inner rotary member taking the form of an inner toroid or disk-like member (31) and is, partly covered by an inner surface of an outer rotary member taking the form of a toroid (32). Alternatively an annular groove (25) is located in an inner surface of an outer toroid (22), and is partly covered by an outer surface of an inner rotary member taking the form of an inner toroid (21) or disk-like member. As the toroids are rotated together about different, intersecting axes an elongated workpiece (W) is introduced into an open portion of …
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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 August 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1998.
- 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.