Rotary fluid machinery
CA 2421208 A1 · Owner: Honma, Kensuke · Inventors: Endoh, Tsuneo; Takahashi, Tsutomu; Itoh, Naoki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Rotary fluid machinery, comprising pistons (37) fitted into and reciprocating in cylinders (33) provided in a rotor (27) and vanes (44) fitted into and reciprocating in vane grooves (43) provided in the rotor (27) wherein the , rotor (27) comprises a rotor core (31) supported on a rotating shaft (21) and storing the cylinders (33) therein and twelve rotor segments (32) divided in circumferential direction of the rotor and fixed so as to surround the outer periphery of the rotor core (31), and the vane grooves (43) are formed between the rotor segments (32) adjacent to each other whereby the dimensional , accuracy of the vane grooves (43) can be increased without requiring any special …
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 September 4, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 4, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2023.
- 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.