Co_ temperature control system for transport vehicles
CA 1319021 C · Owner: De Langavant, Bernard C. · Inventors: De Langavant, Bernard C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cooling system for an insulated enclosure comprising an evaporator containing CO2 in liquid and gaseous phases. A vent is coupled to the evaporator to release CO2 gas in order to reduce the pressure in the evaporator caused by the vaporization of CO2 therein. An electronic controller regulates the opening and closing operation of the vent to produce a generally cyclical pressure variation in the evaporator, having an amplitude selected in accordance with the heat absorption rate of the system, whereby regulating the CO2 discharge rate from the evaporator in accordance with the heat absorption rate. A ventilation system is also provided to produce an air current in the enclosure. 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
- Granted June 15, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 15, 2010.
- 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.