Engine cooling system and method with temperature-controlled expansion chamber
CA 2293466 C · Owner: Evans Cooling Systems, Inc. · Inventors: Evans, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an engine cooling system, an upper coolant chamber (31) and a lower coolant chamber (24) of a typical engine (10), such as an internal combustion engine or fuel cell, are formed adjacent to the heat-emitting components of the engine (14, 27), and a substantially anhydrous boilable liquid coolant having , a saturation temperature higher than that of water is received within the engine coolant chambers (24, 31). A coolant expansion reservoir (76) defining an expansion chamber (80) is coupled in fluid communication between the engine coolant chambers (24, 31) and the engine's ambient atmosphere for receiving coolant from the engine coolant chambers and permitting coolant flow between …
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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 10, 1998 and granted February 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2020.
- 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.