Fluid operated mechanical power amplifier

Details Fluid operated mechanical power amplifier Fluid operated mechanical power amplifier

1992-07-02

1994-01-18

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

605471, 60591, F15B 910

Patent

active

052792048

ABSTRACT:
A fluid-operated power booster includes a housing having a main piston slidably mounted therein and a regulating chamber formed in the main piston. A regulating piston is mounted within the regulating chamber and is fixed to an input shaft. The input shaft has a valve mounted on it so that movement of the input shaft and regulating piston in a first direction permits the flow of working fluid into both a working chamber and the regulating chamber, while movement of the input shaft in a second direction causes working fluid to be exhausted from the working chamber. The regulating piston is biased by a mechanical spring whose force must be overcome to initiate movement of the regulating piston and thereby the flow of working fluid to achieve booster action. The output of the device is by way of an output shaft connected to the main piston.

REFERENCES:
patent: 3327590 (1967-06-01), Johnson
patent: 3596564 (1971-08-01), Johnson
patent: 3747473 (1973-07-01), Bach et al.
patent: 3951043 (1976-04-01), Keady
patent: 4934250 (1990-06-01), Siegel

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