Method of forming metal
CA 1311159 C · Owner: Richardson, Donald George · Inventors: Richardson, Donald George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for the high energy rate forming of metal. A die/mould (11) of cage-like construction and of the shape to which the sheet metal is to be formed is lined with sheet metal (18) and filled with a liquid medium. A number of explosive charges are then placed at strategic locations within the liquid medium and detonated causing deformation of the sheet metal (18) and taking up by the metal of the shape defined by the die/mould (11). The die/mould (11) is normally buried in a pit and supported therein during the deformation process. The cage-like structure of the die/mould enables air trapped between the sheet metal and the die to escape during the deformation process. A …
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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 December 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 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.