Hydraulic drilling rig
CA 2340407 A1 · Owner: Mcconnell, Dave · Inventors: Byrt, Harry; Mcconnell, Dave; Desai, Vinod
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-purpose drilling rig has a movable pipe support cradle (60) which moves horizontally to transfer drill pipe from a storage area to the well being drilled, and vice versa. The cradle travels along a roof platform supported by load-bearing hydraulic lifting rams (40). Raising or lowering the lifting rams raises or lowers the roof platform along with the drill pipe , suspended from the cradle. Structural towers (30) stabilize the lifting rams against buckling and lateral loads. Supplementary lifting capacity is provided by cradle-mounted roof rams (62) having pistons which may extend downward from the cradle, with the drill pipe suspended from a yoke interconnecting the roof …
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 August 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2021.
- 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.