Hydraulic booster

Details Hydraulic booster Hydraulic booster

1976-01-26

1977-09-27

Cohen, Irwin C.

Power plants

Pressure fluid source and motor

Pulsator

60567, 60574, 60582, 91391R, 92 62, B60T 1316, F15B 700

Patent

active

040502511

ABSTRACT:
The invention relates to a hydraulic servomotor comprising a housing provided with a bore slidably receiving two pistons separating an actuating chamber from an utilization chamber, said pistons including an annular outer piston and an inner piston received within the annular piston. Releasable coupling means are provided between both pistons to permit said pistons to move in unison when high pressure fluid is available in the actuating chamber and to permit the inner piston to be moved alone by the push rod in the event of a high pressure failure in the actuating chamber. The motion of the outer piston towards the interior of the actuating chamber is limited by an abutment fixed to the housing.

REFERENCES:
patent: 512790 (1894-01-01), Bachman
patent: 2163874 (1939-06-01), Goepfrich
patent: 3345818 (1967-10-01), Milster
patent: 3473329 (1969-10-01), Eggstein
patent: 3623694 (1971-11-01), Goldberg
patent: 3805671 (1974-04-01), Carre
patent: 3926093 (1975-12-01), Nakagawa

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