Controlling refrigerant in a closed loop recirculation system
CA 2266786 A1 · Owner: Eaton Corporation · Inventors: Torrence, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refrigerant system having individual thermal expansion valves for controlling refrigerant flow, from a common compressor and condenser to separate remotely located evaporators such as for, vehicle front and rear seat passenger comfort. One of the remote thermal expansion valves has a, thermoelectric cooler in heat conducting relationship with the fluid filled power capsule of the valve. Upon energization of the thermoelectric cooler the sensed temperature of the refrigerant returning, through the valve from the evaporator to the compressor is altered to cause the valve to reduce, refrigerant flow to the evaporator to compensate for reduced refrigerant supply pressure due to flow, …
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 April 8, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2021.
- 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.