Actuation system for an oilfield tubular handling system
CA 2928033 C · Owner: Nabors Drilling Technologies Usa, Inc. · Inventors: Angman, Per G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An actuation system for a tubular handling mechanism of a tubular handling assembly the actuation system comprising: a mud flow path passing through rotating parts and non-rotating parts of the tubular handling assembly; a valve assembly including a valve seat in the mud flow path and a ball the valve seat positioned to be in hydraulic driving communication with the tubular handling mechanism; and a ball drop assembly including an opening to the mud flow path through which the ball is released and wherein the ball drop assembly opening is positioned in a non- rotating part.
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 25, 2006 and granted May 1, 2018. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2026.
- 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.