Bearing lubrication system for a scroll compressor
CA 2275816 C · Owner: Utter, Robert E. · Inventors: Utter, Robert E.; Haller, David K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scroll compressor having a suction chamber into which fluid is received substantially at suction pressure and a discharge chamber from which the fluid is discharged, substantially at discharge pressure including mutually engaged fixed and , orbiting scroll members, in fluid communication with the suction and discharge chambers an , intermediate, pressure chamber defined in part by one of fixed and orbiting scroll members an oil, reservoir, an electric motor, and a shaft operably coupling the motor and the orbiting scroll, member. The shaft is provided with a longitudinal passageway extending longitudinally, therethrough, the longitudinal passageway in fluid communication with the oil …
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 June 21, 1999 and granted September 24, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2021.
- 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.