Gear pump with improved inlet port
CA 2611761 C · Owner: Chang, Peter Lit Ming · Inventors: Chang, Peter Lit Ming
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
With a traditional gear pump inlet design it is difficult to fill the pumping chamber when the inlet pressure is low or the operating speed is high A gear pump (100) is provided and includes an inlet port (116) which terminates in , the pumping direction of the rotor set (104) in a radially inwardly extending ramp portion( 132) The ramp portion (132) operates to direct working fluid from the inlet (116) radially inwardly into the pumping chamber (126) of the rotor set (104) which is passing over the ramp portion (132) By closing the pumping chamber (126) at a radially inwardly point the filling efficiency of , the pumping chamber (126) is improved reducing cavitation and/or operating …
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 June 22, 2006 and granted October 23, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 22, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.