Hydraulic cylinder assembly for use in variable external pressur

Details Hydraulic cylinder assembly for use in variable external pressur Hydraulic cylinder assembly for use in variable external pressur

1993-10-12

1994-11-15

Look, Edward K.

Power plants

Pressure fluid source and motor

60413, 91 51, 91417R, F16D 3100, F15B 1517

Patent

active

053636503

ABSTRACT:
A hydraulic cylinder assembly for use in a variable external pressure envnment is provided. A hydraulic cylinder exposed to the variable external pressure environment has two chambers separated from one another by a piston. Hydraulic fluid fills each of the two chambers. In an "at rest" mode, the hydraulic fluid in the two chambers is pressurized to the variable external pressure. In an "at work" mode, pressure of the hydraulic fluid is selectively varied from the variable external pressure in one of the two chambers such that the piston moves. The entire assembly can be installed between the pressure and outer hulls of a submarine and utilize seawater to equalize the pressure in a balanced power stroke circuit.

REFERENCES:
patent: 2984218 (1961-05-01), Christianson
patent: 3538814 (1970-11-01), Fisher
patent: 5050380 (1991-09-01), Jonsson

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