Method for extruding a profile or a similar billet from a bolt or bar and corresponding device
CA 2453258 A1 · Owner: Alcan Technology & Management Ltd. · Inventors: Knissel, Holger; Wompner, Diethelm; Ames, Adolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for extruding a profile or a similar billet (50) from a bolt or bar (30, 30a) that is guided in a recipient bore (16) of a recipient (14) and that is extruded by means of an extrusion die (10) through a shaping section (46) of a shaping tool (38). Once the front face (34a) of the bar (30) is placed on the rear surface (33a) of a preceding bar (30a) air , or similar flowing agents present on said surfaces (33a 34a) are discharged , during pressure build-up in an approximately radial relation together with the contaminations that are present in detached form on the transversal bur surface. During pressure build-up, parts of the transversal burs are …
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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
- Filed July 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2024.
- 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.