Method and apparatus for manipulating a well bore liner
CA 1305407 C · Owner: Texas Iron Works, Inc. · Inventors: Braddick, Britt O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for supporting a liner on an operating string mandrel so that the liner can be lowered into a well bore and selectively rotated and reciprocated. The liner includes rigid splines which are initially engaged with rigid splines releasably engaged on the operating string mandrel to enable the liner to be selectively rotated and reciprocated before positioning on the well bore casing. The liner is secured or positioned on the well bore casing and the operating string can then be manipulated to release the mandrel from the rigid splines releasably engaged thereon. The mandrel rigid splines and mandrel have cooperating surfaces which reconnect the mandrel rigid splines to the …
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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 July 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 2009.
- 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.