Valved discharge mechanism of a refrigerant compressor
CA 2033864 C · Owner: Takahashi, Hareo · Inventors: Takahashi, Hareo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to an improved valved discharge mechanism of a refrigerant compressor The compressor, includes a compressor housing having at least one chamber in which successive strokes of sucking, compressing and discharging a refrig-, erant gas is repeatedly performed. The chamber is linked to an outside chamber through a conduit formed in the compressor housing. A valved discharge mechanism is disposed at one end opening of the conduit which opens to the outside chamber. The valved discharge mechanism includes a discharge reed valve which by means of a bending movement blocks and opens the one end opening of the conduit. The discharge reed valve has a predetermined …
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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
- Filed January 9, 1991 and granted May 14, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2013.
- 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.