Variable displacement compressor
CA 2212705 A1 · Owner: Kawaguchi, Masahiro · Inventors: Kawaguchi, Masahiro; Sonobe, Masanori; Suitou, Ken
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A variable displacement refrigerant compressor is disclosed which is of a type that comprises a housing forming therein a crankcase, a suction chamber and a suction passage communicable with the suction chamber, a tiltable swash plate disposed in the crank case for varying the displacement of the compressor by changing the stroke of a working piston in accordance with the magnitude of cooling load a cylinder, block having formed axially therethrough a central bore for accommodating therein a shutoff member in the form of a slidable spool for shutting off the fluid communication between the suction chamber and the suction passage a, drive shaft supported it the crankcase for driving the …
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 August 11, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 11, 2019.
- 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.