Refrigerant recovery unit
CA 2091849 A1 · Owner: Achtner, Joseph · Inventors: Achtner, Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved refrigerant recovery unit is provided for evacuating and storing refrigerant from a mechanical refrigeration system. The recovery unit includes a portable refrigerator circuit charged with a refrigerant having a lower saturation temperature than the target refrigerant to be recovered. The recovery unit refrigerant is passed through an evaporator coil used to chill a recovery tank adapted for flow connection with the refrigeration system to be evacuated, thereby creating a pressure differential which causes the target refrigerant to flow into the recovery tank.
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 March 17, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 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.