Thermal control of flowrate in engine coolant system
CA 2748538 A1 · Owner: Flowork Systems Ii Llc · Inventors: Fulton, John Robert Lewis; Repple, Walter Otto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An impeller pump with thermostatically adjustable swirl-vanes in use as an , automotive , engine-driven coolant pump. Flow variation is controlled by varying the orientation of the , swirl-vanes. A change in orientation is effected by the thermal driver e.g a , wax-type , thermostat, which senses coolant temperature. The swirl-vanes boost the flowrate when the , coolant is hot, and decrease it when the coolant cools. The swirl-vanes are mounted for , pivoting, and are located just upstream from the pump impeller. The traditional engine-thermostat , function is provided inside the pumping-chamber in that the swirl-vanes can , be , operated to close off a port to the engine radiator. The …
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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 30, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 30, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2025.
- 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.