Drill rod handling device
CA 2371989 C · Owner: Paech, Ivor Neil · Inventors: Paech, Ivor Neil; Muller, Stephen Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a drill rod handling device (14) which is adapted for attachment to a drill rig assembly (10) which includes a standard rotation unit (12) and a rod holder (13) mounted on top of a feed frame (11) and which are used to feed drill rods (25) in and out of the ground. The handling device (14) comprises a carriage assembly (20) which is guided for sliding movement along slide members (19), a head assembly (24) which is designed to receive and support a drill rod (25) and to feed the drill rod longitudinally for screwing and unscrewing of the thread joint while simultaneously gripping same, a swing arm (21) pivotally attached to the carriage assembly and extending …
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 April 18, 2000 and granted May 24, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 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.