Expander
CA 2439600 A1 · Owner: Makino, Hiroyuki · Inventors: Uda, Makoto; Makino, Hiroyuki; Ohsono, Kouhei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An expansion machine (M) employing steam as working medium comprising a first , axial piston cylinder group (49) on the radial inside disposed annularly to a rotor (27) while surrounding the axis (L) of an output shaft (28) and a , second axial piston cylinder group (57) on the radial outside disposed annularly to surround the outside thereof wherein the first and second axial , piston cylinder groups (49 57) are driven by a common cam plate (39) and disposed with the pitch deviated in the circumferential direction. High temperature high pressure steam operates the first axial piston cylinder group (49) at first, and then operates the second axial piston cylinder group (57) and both …
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 March 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2024.
- 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.