Rotary type fluid machine
CA 1279302 C · Owner: Maeda, Mitsutoshi · Inventors: Maeda, Mitsutoshi; Hirano, Takahisa; Fukami, Shoji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary fluid machine of the type including two spiral elements, or a stationary spiral element and a revolving spiral element having substantically an identical configuration and disposed therein 180 degrees apart from each other in mutually nested relationship, the revolving spiral element being adapted to revolve in solar motion relationship with respect to the stationary spiral element with a radius of revolutionary motion ?, in which the both spiral elements are respectively defined in profile with a radially outer curve segment consisting of an involute curve a radially, inner curve segment consisting of another involute curve in an arc having a radius R, and an arc of a radius r …
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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
- Granted January 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2008.
- 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.