Improved method of forming a tubular blank into a structural component and die therefor
CA 2497359 A1 · Owner: Matsen, Marc R. · Inventors: Pfaffmann, George D.; Dykstra, William C.; Matsen, Marc R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of forming an elongated metal blank (10) into a structural component having a predetermined outer configuratio (A). The method includes providing a shape imparting cavity or shell section (200a b) formed of a rigid material , which includes an innersurface defining the predetermined shape placing the , metal blank (10) into the cavity or shell section (200a b), and forming the , metal blank (10) into the component by heating axial portions of the metal blank (10) and forcing a fluid at a high pressure into the metal blank (10) until the metal blank at least partially conforms to at least a portion of the inner surface of the cavity or shell section (200a b) to form the …
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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 September 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2025.
- 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.