Wear resistant pc pump assembly
CA 2356086 A1 · Owner: Cote, Sheldon · Inventors: Cote, Sheldon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotor and stator pumping apparatus includes a stator having non-deformable internal lobes. A rotor is provided having external lobes. The external lobes on the rotor have a deformable covering. The deformable covering on the external lobes of the rotor deform to maintain a sealing engagement with the internal lobes of the stator as the rotor rotates. The rotor and stator pumping apparatus tackles the problem of stator wear, by switching the roles of the rotor and the stator. This simplifies servicing as the rotor can be pulled out and replaced on site in a matter of minutes.
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 29, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 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.