Wheel-mounted drill rig with articulated frame
CA 2241799 C · Owner: Rokbi, Chouaib · Inventors: Rokbi, Chouaib
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The "bearing" or "vehicle" part of the rig consists of a front frame (1) with two wheels (2) and a rear frame (3) with two wheels (4) connected by an intermediate hinge around a vertical shaft (6). To improve the lateral stability on turns the front frame (1) is extended to the rear (in 13) behind the intermediate hinge shaft (6) and above a portion (14) of the rear frame (3). The extended front frame (1) supports in addition to the drilling arms (7) and the driving and operating compartment (10) some of the electrical and/or hydraulic equipment (15) of the rig. In a reverse arrangement the rear frame (1) is extended to the front ahead of the hinge shaft (6) and over a portion of the front …
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 July 10, 1998 and granted January 14, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2020.
- 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.