Rollover method for metal casting and apparatus therefor
CA 2085032 A1 · Owner: Ford Motor Company · Inventors: Seaton, Gregory W.; Seaton, William W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A method and apparatus for making a metallurgically improved metal casting (10) with increased productivity, wherein molten metal is quiescently fed upwards into a molding chamber (14) which is then inverted. The disclosed system uses an assembly of refractory cores (12) that define the molding chamber (14) with riser channels (16). A metal entrance (18) to the molding chamber (14) through a mold side wall (20) requires feeding molten metal against gravity to fill the molding chamber (14), and quiescently pressure feeding molten metal through a metal launder (26) to fill the molding chamber (14) and the riser channels (16). A mold/nozzle connection between the metal launder (26) …
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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 December 10, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2014.
- 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.