Buoyancy device

Hydraulic and earth engineering – Diving – Suit or accessory therefor

Patent

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Details

441 96, B63C 1102

Patent

active

046016090

ABSTRACT:
A hydrostatically controlled buoyancy compensator to maintain a predetermined buoyancy for an aquatic diver and buoyancy device at any depth comprising a control valve and pressure equalization chamber operatively coupled together by a control valve actuator; the control valve comprises a control valve housing having a multiple position valve body movably disposed therein, the control valve housing includes a regulator passage, buoyancy device passage and vent passage formed therein and the multiple position valve body includes a regulator channel and vent channel formed therein to selectively feed pressurized air from an external source to the buoyancy device and from the buoyancy device to the water; the pressure equalization chamber comprises a hollow constant volume pressure equalization housing having a pressure equalization port formed therein in fluid communication with the buoyancy device; the control valve actuator comprises a hollow control valve actuator housing having a multiple position valve positioner movably disposed therein and a valve actuator coupler operatively coupled between the multiple position valve positioner and multiple position valve body, the hollow control valve actuator housing includes a pressure equalization chamber passage and an external passage formed therein in fluid communication with the pressure equalization chamber and water respectively such that the multiple position valve positioner senses the pressure differential between the water and pressure equalization chamber through the external passage and pressure equalization chamber passage respectively.

REFERENCES:
patent: 3820348 (1974-06-01), Fast
patent: 4101998 (1978-07-01), Buckle
patent: 4324507 (1982-04-01), Harrah
patent: 4379656 (1983-04-01), Darling

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