Well tubing handling apparatus
CA 1100936 A · Owner: Otis Engineering Corporation · Inventors: Council, Malcolm N.; Sizer, Phillip S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Well tubing handling apparatus useful for running and pulling tubing in a well bore and drilling a well bore including a main frame assembly, a pulling and snubbing assembly a, a ladder assembly, and a work platform assembly. The apparatus is quickly assembled and torn down. The main frame assembly includes a base, telescoping non-load bearing guide tubes a load-bearing mast, fixed slips, and winches and sheave and cable assemblies for manipulating pipe joints between handling positions in the apparatus and a pipe rack. The pulling and snubbing assembly includes a hydraulic cylinder connectible at the free end of the piston on the frame base sheave mounted, drive cables secured on the …
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
- Granted May 12, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 1998.
- 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.