Hydraulic remote control joystick

Details Hydraulic remote control joystick Hydraulic remote control joystick

1981-07-06

1984-05-01

Schwadron, Martin P.

Fluid handling

Systems

With selective motion for plural valve actuator

13759612, 250221, F16K 3102, F16K 3144

Patent

active

044455410

ABSTRACT:
A joystick controller 10 for remotely controlling hydraulic directional control valve 82 and also for controlling a solenoid actuated pressure build-up valve 90 is disclosed. A light-emitting diode 19 is carried in and by a handle 13 of the joystick controller 10. A photosensitive transistor 31 receives the light emitted from the light-emitting diode 19. When the handle 13 moves off of a neutral position, a receptacle 28 blocks the light from the photo-transistor 31. In one embodiment, a fiber optic light conductor 20 extends from the light-emitting diode 19 toward the photo-transistor 31. The photo-transistor 31 then actuates a relay switch which sends a control signal to a solenoid actuated pressure build-up valve 90, thereby providing a ready means for effectuating both the control of the hydraulic directional control valve 82 and the pressure build-up valve solenoid 90 with one controller 10.

REFERENCES:
patent: 3612882 (1971-10-01), Sheppard
patent: 3679906 (1972-07-01), Myers
patent: 3814199 (1974-06-01), Jones
patent: 3881106 (1975-04-01), Pocker et al.
patent: 4045667 (1977-08-01), Hanson
patent: 4118100 (1978-10-01), Goell et al.

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