Vehicular and outdoor water-tank valve heating system
CA 2386643 A1 · Owner: Latham, Garland · Inventors: Latham, Garland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vehicle or stationary liquid; water or oil tank heater teaches that a hot fluid may be, passed through a metal body placed in the water piping or in the vacuum piping; thereby melting, any ice in the system and preventing further freezing. The system may be advantageously used, with manifolds, valves scrubbers, pipes or the water tank itself. The coolant flow path may be, optimized for ease of production and/or efficient heat transfer. The invention may be used with, an external source of hot liquid. or it mar be used with a cuff which tray slipped over any of a, variety of devices in need of de-icing.
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 May 17, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 17, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2024.
- 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.