A torsional bearing assembly for transmitting torque to a drill bit
CA 2902466 C · Owner: Aps Technology, Inc. · Inventors: Burgess, Daniel E.; Perry, Carl Allison; Wassell, Mark Ellsworth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vibration damping system for a drill string is configured to drill a drill hole. The drill string has a valve assembly and a drill bit. The system includes a controller configured to operate the valve assembly and to cause a damping force to be applied to the drill bit and at least one sensor configured to be electronically coupled to the controller. The at least one sensor is configured to detect an operating parameter of the drill bit and transmit to the controller a signal that is indicative of the operating parameter of the drill bit when the at least one sensor is electronically coupled to the controller. The controller in response to the signal that is indicative of the operating …
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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 November 8, 2004 and granted June 21, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.