Downhole drill bit drive motor assembly with an integral bilateral signal and power conduction path
CA 2206017 A1 · Owner: Applied Technologies Associates, Inc. · Inventors: Higginbotham, James Robbie; Van Steenwyk, Donald H.; Orcutt-Clenard, Michael S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A downhole drill bit drive motor for use in drilling boreholes in the earth comprising an outer case a drive, motor supported within the outer case and a mechanical shafting assembly to provide a driving torque to an attached drill bit. A coupling is provided connected to the mechanical shafting assembly to provide mechanical connection to and to accommodate eccentric or angular motions of the drive motor. There is also a bearing assembly to provide radial and axial support for the mechanical shafting assembly. A bilateral electrical conductor extends axially through the motor the coupling, and the mechanical shafting assembly to a connection proximate the drill bit. The electrical …
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 May 23, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2019.
- 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.