Scroll type fluid displacement apparatus
CA 2042975 C · Owner: Sanden Corporation · Inventors: Terauchi, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scroll type fluid displacement apparatus is disclosed. A driving mechanism includes a drive shaft which is rotatably supported by the compressor housing. A crank pin eccentrically extends from an inner end of the drive shaft and is drivingly coupled to a bushing. The bushing has a central axis which is offset from the central axes of the drive shaft and the crank pin. The bushing transmits orbital motion to the orbiting scroll thereby developing line contacts between the spiral elements. A first line can be defined passing through the central axis of the drive shaft and the central axis of the bushing a, second line can be defined passing through the central axis of the bushing and …
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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 May 21, 1991 and granted October 7, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 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.