Automatic slip casing hanger with radially energized seal element
CA 2207662 A1 · Owner: Fmc Corporation · Inventors: Henley, Ronald W.; Quates, Ronald D.; Long, Kevin P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a device for hanging a casing string in a wellhead which has a seal disposed between the string and the wellhead a ring, for engaging the wellhead disposed around the string in contact with the seal a, mandrel slideably disposed through the ring and a bowl for engagement of the, string in communication with the mandrel wherein downward movement of the bowl causes radial energization of the seal by the mandrel.
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 June 12, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2019.
- 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.