Grooved rotor for an internal gear pump
CA 2295456 A1 · Owner: Tuthill Corporation · Inventors: Mulcahy, Michael K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotor for an internal gear pump adapted to improve the lubrication of the internal gear, parts. A radial groove is added to the inner face of an internal rotor. The groove extends radially, between the center of the rotor and an outer diameter of the rotor. The groove provides a, communication channel between the outer circumference of the rotor and the parts located within, the rotor's inner diameter namely the idler gear and idler pin. The disclosed grooved rotor, improves the flow of fluid to the interface between the idler gear and the idler pin of a typical, internal gear pump. Should the lubricating properties of the fluid be reduced and/or the operating, pressures of the …
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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 January 11, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 11, 2022.
- 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.