Combined pump generator and turbine
CA 2394819 A1 · Owner: Smith, Douglas Wilbert Paul · Inventors: Smith, Douglas Wilbert Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention combines the functions of a pump a turbine and a generator , interconnected on a common shaft. The casing components are separably connected to form an enclosure such that only, static seals are required to prevent working fluid from leaking. A portion of the working fluid can be, used in the hydrodynamic action of the radial bearings and the thrust bearings. A portion of the, working fluid can be used to cool the generator rotor. A coolant impeller can be rigidly attached to the, common shaft to enhance flow of the portion of working fluid used for hydrodynamic bearing support, and rotor cooling. Multiple pump impellers can be rigidly attached in series on the common …
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 August 9, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 9, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 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.