Molton metal pump with vaned impeller and flow directing pumping chamber
CA 2097648 C · Owner: Mordue, George S. · Inventors: Mordue, George S.; Gilbert, Ronald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A molten metal pump impeller comprised of an imperforate substantially circular base having a surface including a hub adapted to receive a shaft. At least two imperforate vanes being connected to and extending substantially perpendicular from the surface of the circular base and extending radially from the hub toward the periphery of the circular base. Each vane being spaced circumferentially apart and including a first edge, a second edge and a third edge. The first edge being disposed on the surface of the circular base and the second opposed edge defining an inlet end of the impeller over the entire radial dimension. The third edge being the radially outer edge defining an outlet area, …
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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 June 3, 1993 and granted April 28, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 3, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 2015.
- 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.