Dual evaporator refrigerator with sequential compressor operation
CA 2101416 A1 · Owner: Kuehl, Steven J. · Inventors: Peterson, James R.; Kuehl, Steven J.; Cur, Nihat O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refrigeration appliance having at least two refrigeration compartments, each compartment having its own access door is, provided wherein there is a first evaporator for the first compartment, the first evaporator operating at a first pressure level and a second evaporator for the second compartment the, second evaporator operating at a pressure level higher than the first pressure level. There is a single condenser a single, compressor, a refrigerant circuit having a series of conduits for providing a flow of refrigerant sequentially to the first and second evaporators, the condenser and compressor and various, valves in the refrigerant circuit for directing refrigerant to a selected one …
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 July 27, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2015.
- 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.