Submarine external hydraulic fluid - isolated system

Details Submarine external hydraulic fluid - isolated system Submarine external hydraulic fluid - isolated system

1992-10-01

1993-10-05

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

114312, 114319, F04B 1700, B63G 800

Patent

active

052499332

ABSTRACT:
A submarine is equipped with a conventional main hydraulic system and has least one hydraulic actuator located outside the vessel's pressurized hull where it is susceptible to contamination of its hydraulic fluid. The actuator is operated from an isolation system that includes a slave piston driven by a power piston from the main hydraulic system to keep a desired pressure in the secondary system by operating the power piston only as required for this purpose. Both power and slave piston positions are related and a two position limit switch is tripped by switch actuators linked to these pistons for operating the power and slave pistons. This isolation system prevents any contaminants in the external system from contaminating the internal system.

REFERENCES:
patent: 3447552 (1969-06-01), Grosson
patent: 3649136 (1972-03-01), Ruidisch
patent: 3775028 (1973-11-01), Davis

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