Extrusion die assembly
CA 1308531 C · Owner: Lupke, Manfred A. A. · Inventors: Lupke, Manfred A. A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns an extrusion die assembly especially for use where accurate centering of a mandrel is important. The assembly includes a first member having a mandrel projecting therefrom and an extrusion passage generally in line with the mandrel, which extrusion passage is, at one end, of cross section to conform with a passage carrying extrudate for the extrusion head and which merges, over its length, into an extrusion passage at the other end, at least partially surrounding the root of the mandrel. This member is adjustably located in an outer member, which together with the mandrel defines an extrusion nozzle. Since the extrusion passage passes through the first member it is …
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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 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 2009.
- 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.