Scroll-type compressor and operation method therefor
CA 2255359 C · Owner: Kawada, Minoru · Inventors: Kawada, Minoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a scroll-type compressor comprising a housing and a fixed scroll , and, a revolving scroll in the housing each scroll comprising an end plate and a spiral lap, built on an inner surface of the end plate the inner surface facing the other , end plate wherein the fixed and revolving scrolls are engaged with each other so as to form a, plurality of compression chambers a discharge cavity is limitedly provided by an outer, surface of the end plate of the fixed scroll and the housing a discharge port , is opened in a, central area in the end plate of the fixed scroll and a gas compressed by the , compression chambers is discharged via the discharge port and the discharge cavity …
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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 December 10, 1998 and granted October 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2020.
- 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.