Power assist proportional remote controller

Details Power assist proportional remote controller Power assist proportional remote controller

1977-08-18

1980-07-15

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

91378, 13762564, F15B 13042

Patent

active

042123232

ABSTRACT:
A power assist remotely controlled servo controller for proportionally controlling the operation of a directional control valve, the controller including a servo-controlled force amplifying piston assembly to operate the directional control valve and a pilot pressure balanced piston connected to the servo-controlled piston assembly to control the directional control valve. The balanced pilot pressure forces acting on the pressure balanced piston being controlled by either a hydraulic or electric controller from a remote location.

REFERENCES:
patent: 2931343 (1960-04-01), Moog
patent: 3076442 (1963-02-01), Raeber
patent: 3486801 (1969-12-01), Frayer
patent: 3709257 (1973-01-01), Faisandier
patent: 3805670 (1974-04-01), Fallows
patent: 3875849 (1975-04-01), Patel
patent: 4014509 (1977-03-01), Yoshino et al.
patent: 4114650 (1978-09-01), Gordon

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