Mould device with adjustable walls
CA 2248469 C · Owner: Marchand, Pierre · Inventors: Weaver, Clark Howard; Charbonneau, Yves; Marchand, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A casting apparatus is described for casting metal ingots of rectangular shape comprising a mould assembly mounted on a casting table. The mould assembly has a pair of opposed outwardly curved long walls and a pair of opposed short walls defining a rectangular mould cavity. Both the opposed short walls and the opposed long walls are moveable to change the size of the cast ingot with the long walls being independently moveable from the short walls. Operative means are provided for simultaneously moving the opposed long walls symmetrically about the centre-line of the mould cavity in both inward and outward directions, and a vertically moveable bottom block is provided which is adapted to …
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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 28, 1998 and granted April 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2020.
- 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.