Method and apparatus for transferring a drilling apparatus from a movable vessel to a fixed structure
CA 2095618 C · Owner: Mcnease, Daniel Frank · Inventors: Mcnease, Daniel Frank; Yeargain, Charles Wesley; Moody, Michael Dwayne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A skidbase (16) and a drilling structure (18) are adapted for transfer between a jack-up platform (12) and a fixed platform (14). The jack-up platform (12) is moved into position adjacent the fixed platform (14) and raised to a height aligned with the fixed platform (14). The skidbase (16) is then transferred onto the fixed platform (14) to provide a base on which the drilling structure (18) is next placed. The jack-up platform (12) is raised to a vertical height aligned with the skidbase (16). To ensure proper location of the top surface of the jack-up platform (12) relative to the skidbase (16), a connection means (47) automatically engages and aligns the jack-up platform (12) with …
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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
- Filed November 6, 1991 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2013.
- 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.