Continuously-filled floatation apparatus

Details Continuously-filled floatation apparatus Continuously-filled floatation apparatus

1990-08-15

1993-02-09

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

367 20, 367106, 367130, 367144, 114245, G01V 138

Patent

active

051857260

ABSTRACT:
The invention provides a floatation apparatus for maintaining a longitudinal object at a constant depth below the water surface in a body of water. Several airtight chambers are connected in a serial connection to form a string of air tight chambers. A one-way check valve is installed in the chamber at one end of the string while the other end chamber is connected to a nose piece. Air is continuously supplied to the check valve connected to the end chamber. A separate one-way check valve is installed between each pair of adjacent chambers in the string in a manner that air can pass between only in the direction from the air source to the nose member. The floatation apparatus is pivotaly connected to the longitudinal object at more than one place by means of parallel links. When the assembly of the floatation apparatus and the longitudinal object is placed in a body of water and towed behind a vessel, the floatation apparatus maintains the object at a constant depth and in a near straight-line position below the water surface.

REFERENCES:
patent: 3794965 (1974-02-01), Charske
patent: 4745583 (1988-05-01), Motal

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