Two stage coplanar continuously self-regulating gerotor pump
CA 2413113 A1 · Owner: Tesma International Inc. · Inventors: Krug, Peter; Mu, Cheng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A two-stage pump has a gerotor, an intermediate ring and an outer stator. The , gerotor, has n lobes meshing with n+1 lobes on an internal section of the intermediate ring. There are, m lobes on an external section of the intermediate ring meshing with m+1 lobes on the outer, stator. The three components are coplanar and the intermediate ring acts both as a stator for, the inside gerotor and as a gerotor for the outer stator. The gerotor is mounted eccentrically, with the intermediate ring and concentrically with the outer stator. While the gerotor and, intermediate ring form one pump the intermediate ring and outer stator form the other pump. Either one of them can be used as either …
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 November 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 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.