Refrigerant recovery device
CA 1296913 C · Owner: Sibley, Howard W. · Inventors: Sibley, Howard W.; Rich, Donald G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Invention: REFRIGERANT RECOVERY DEVICE Inventors: DONALD G. RICH and HOWARD R. SIBLEY Abstract of the Disclosure, A refrigerant recovery device comprises a pressure vessel filled with packings, such as Berl saddles that provide a large, surface area for mass transfer. The vessel is partly filled with a refrigeration-quality oil. The pressure vessel is mounted on a stand and pivoted so that it can easily be inverted periodically for coating the packing material with the oil. A flexible hose connects the vessel with a refrigeration or air conditioning unit, and a shut off valve is provided as is a check valve which prevents out flow of oil from the vessel. The oil in the vessel absorbs 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 March 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 2009.
- 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.