Rotor hanger
CA 2320609 A1 · Owner: Moore, Edward · Inventors: Moore, Edward; Trupp, Eugene; Mcarthur, Chris
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A "rotor hanger" device for alleviating or eliminating the downward pull on drive rods in an oil or gas well is inserted in-line with a tubing string. At surface, prior to this insertion, an orbiting sub is connected to the top end of the stator, and the rotor is kept backed out of the stator and the orbiting sub. A six foot long, drive rod is then connected to the rotor. Next a bearing housing is joined to , the, orbiting sub by sliding the drive rod through the orbiting sub thereby , sliding the, rotor into the stator. Once the bearing housing is threaded to the top end of the, orbiting sub, the assembly may be lifted and installed into the well bore. The present device is used to …
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 September 21, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 21, 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.