Tensioning and heave compensating arrangement at a riser
CA 2400736 A1 · Owner: Gjedebo, Jon Grude · Inventors: Gjedebo, Jon Grude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A special installation of a riser (10) that extends between an item of subsea equipment (14) and a surface vessel (12) has been described which , installation in particular is intended for use in connection with offshore oil extration, and in which the rise (10) is provided with a telescopic section. For the purpose of heave compensation, the riser (10) is installed in a manner such tat said telescopic section (18) is located at the lower end of the riser (10), heave compensation being effected by the telescopic mobility of the riser (10), while the mass of the riser (10) when suspended in this manner, keeps the rise (10) tensioned.
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 March 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2022.
- 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.