Ships – Floating platform
Patent
1983-04-04
1985-02-26
Basinger, Sherman D.
Ships
Floating platform
91435, 166355, 175 5, 175 27, 251 30, 251206, 254392, 267125, E21B 1908, E21B 1909
Patent
active
045012199
ABSTRACT:
The invention pertains to tensioners for maintaining a load between two relatively movable structures, such as an offshore drill ship or the like and a riser pipe. First and second tensioner bodies are mounted for relative reciprocation, and are further functionally interconnected with the first and second offshore structures respectively. Relative movement of the offshore structures tends to cause corresponding relative reciprocation of the tensioner bodies. A force is applied between the tensioner bodies tending to reciprocate them in a first directional mode and thereby supporting the offshore riser pipe with respect to the offshore support structure. A balancing chamber cooperative between the tensioner bodies communicates with a source of pressurized fluid for resisting reciprocation of the tensioner bodies in the first directional mode, but includes an outlet for egress of the pressurized fluid to permit such reciprocation under controlled conditions. A limit valve is associated with the outlet of the balancing chamber and movable between at least two positions. In a first position, the limit valve communicates a first flow area with the balancing chamber outlet, and in a second position, communicates a second flow area with said outlet. The second flow area is substantially less than the first flow area.
REFERENCES:
patent: 404726 (1889-06-01), Nickerson
patent: 1212154 (1917-01-01), Matthews
patent: 1744331 (1930-01-01), Pascale
patent: 2510356 (1950-06-01), Werts
patent: 3309065 (1967-03-01), Prud'homme et al.
patent: 3314657 (1967-04-01), Prud'homme et al.
patent: 3785445 (1974-01-01), Scozzafava
patent: 3799505 (1974-03-01), Duncan
patent: 3804183 (1974-04-01), Duncan et al.
patent: 3842603 (1974-10-01), Ditzen
patent: 3865066 (1975-02-01), White et al.
patent: 3877489 (1975-04-01), Louie et al.
patent: 3877680 (1975-04-01), Childs et al.
patent: 3908963 (1975-09-01), Bates et al.
patent: 4072122 (1978-02-01), Balston
patent: 4268013 (1981-05-01), Khan
patent: 4351261 (1982-09-01), Shanks
Basinger Sherman D.
NL Industries Inc.
LandOfFree
Tensioner apparatus with emergency limit means does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tensioner apparatus with emergency limit means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tensioner apparatus with emergency limit means will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-512136