Refrigerant compressor having improved drive power transmission unit
CA 2174403 C · Owner: Suito, Ken · Inventors: Michiyuki, Takashi; Ogura, Shinichi; Suito, Ken
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refrigerant compressor having a drive shaft rotatable to cause compression of a refrigerant gas and a drive power transmission unit for transmitting a drive power from an external drive power source to the drive shaft the drive power transmission unit having a pulley freely rotatably mounted around the drive shaft a power transmitting element fixed to the drive shaft and a shock absorbent rubber element arranged between the pulley and the power transmitting element for providing a positive engagement between the rubber element and the pulley and between the rubber element and the power transmitting element. The shock absorbent rubber element absorbs a change in a load torque applied to …
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 April 17, 1996 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2018.
- 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.