Method for continuous internal agitation of fluid within hot water heaters or other fluid containing vessels
CA 2488357 A1 · Owner: Halsall, Richard W. · Inventors: Halsall, Richard W.; Miller, Robert M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To agitate a fluid within a vessel (106) which may be a hot water heater, an , ultrasonic transducer (104) is located within the vessel. An ultrasonic generator and timer (102) receive alternating current input (100) convert the , current to an ultrasonic frequency current and provide the transducer (104) , with the ultrasonic current. Deposits of calcium carbonate in hot water heaters are prevented by the agitation. The transducer (104) may be a magnetostrictive transducer or a piezoelectric transducer.
Read the whole patent
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 2, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 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.