Equipment for boring mountings including an operating element, a motor and control means
CA 2006920 C · Owner: Morin, Pierre · Inventors: Bardin, Christian; Morin, Pierre; Boulet, Jean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a drill string comprising a drilling motor an activation device, means for detecting information and a power means for controlling the said device the motor comprises an energy conversion zone for rotationally driving a drilling tool the said zone having an upper end. The invention is distinguished by the said activation device and at least one of the elements of the assembly comprised by the said means of detection and the said power means being located on either side of the upper end.
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 December 29, 1989 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 29, 2011.
- 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.