Environmental protection refrigeration disposal and charging system
CA 1106629 A · Owner: Robinair Manufacturing Corporation · Inventors: Cain, Robert L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention pertains to an environment protection system and method for withdrawing and charging refrigerants par-, ticularly fluorocarbon refrigerants with respect to refrigeration, systems as used for refrigeration dehumidifying, air conditioning, and the like without contamination of the atmosphere. Refrigerant is evacuated from a refrigeration system through a closed circuit into a closed disposal or storage container; and in an embodiment of the invention direct evacuation pumping of the refrigerant may be proceeded by drawing the majority Or the refrigerant from the refrigeration system by means of a preliminary vacuum tank connected in series with a refrigerant disposal container. …
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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 August 11, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 1998.
- 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.