Cyclonic liquid circulation system
CA 2263033 A1 · Owner: Wegner, Gary L. · Inventors: Wegner, Gary L.; Goggin, Anne C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cyclonic liquid circulator is described in which a plurality of pontoons extend substantially radially from a base and with respect to a central axis passing through the base. A drive mechanism is mounted on the base that is drivingly connected to an impeller for rotating the impeller about the central axis. The base and pontoons are configured to rest on a liquid surface with the pontoons engaging the liquid and forming wedge shaped spaces between successive pontoons. The impeller is rotated by the drive mechanism about the central axis to produce a cyclonic current of liquid directed toward the base. The pontoons are configured to direct the cyclonic current radially away from the base …
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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 February 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2021.
- 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.