Buoyancy unit with controlled heave

Details Buoyancy unit with controlled heave Buoyancy unit with controlled heave

1997-09-23

2000-02-08

Avila, Stephen

Ships

Ballasting

Water tanks

114265, B63B 3903

Patent

active

060217286

ABSTRACT:
Buoyancy unit comprising a body (14) in which there are formed a buoyancy chamber (20) and a chamber (22) which is intended to become filled with water. According to the invention, the wall of the chamber (22) has at least two openings (24, 28), at least one opening of which comprises a nozzle (24, 28) allowing the passage of water between the chamber (22) and the outside, the nozzle being dimensioned in such a way as to appreciably slow the flow of water. The unit may form a buoyancy column intended to hold the deck of a floating rig up out of the water.

REFERENCES:
patent: 3537412 (1970-11-01), Henderson
patent: 3797440 (1974-03-01), Pangalila
patent: 3886886 (1975-06-01), Anders
patent: 3915108 (1975-10-01), Rodriguez
patent: 4100873 (1978-07-01), Kaldenbach
patent: 4216559 (1980-08-01), Switlik
patent: 4232623 (1980-11-01), Chou et al.
patent: 4452165 (1984-06-01), Bergman
Patent Abstracts of Japan, vol. 12, No. 409 (M-758), Oct. 28, 1988 & JP 63 149285 A (Mitsubishi Heavy Industries), Jun. 22, 1988.

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