Master/slave fluid pressure apparatus

Details Master/slave fluid pressure apparatus Master/slave fluid pressure apparatus

1983-08-22

1985-04-09

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Fluid operated

91461, F15B 1316

Patent

active

045094047

ABSTRACT:
A master/slave fluid-pressure apparatus having a first valve respective to angular movement of a master arm for producing fluid pressure which is applied as a pilot pressure to shift a closed-center three-position directional valve in one direction, which then allows a fluid-pressure actuator to be operated to cause a slave arm to follow the master arm in angular motion. The angular movement of the slave arm actuates a second valve coacting therewith to develop a fluid pressure which is applied as another pilot pressure to the directional valve. When the fluid pressure from the second valve reaches a predetermined point, the directional valve is shifted in the opposite direction to stop operation of the fluid-pressure actuator. The first and second valves may either be pressure reducing valves or relief valves.

REFERENCES:
patent: 2974639 (1961-03-01), Connor
patent: 3626809 (1971-12-01), Pieper
patent: 3872773 (1925-03-01), Denker
patent: 4133250 (1979-01-01), Heintz
patent: 4163413 (1979-08-01), Kennicutt

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