Apparatus for controlling selectively engageable detents in a pi

Details Apparatus for controlling selectively engageable detents in a pi Apparatus for controlling selectively engageable detents in a pi

1995-11-01

1997-11-04

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

1375961, 13762427, 1376256, F15B 1301

Patent

active

056830718

ABSTRACT:
A pilot hydraulic system controller including a pilot controller valve for controlling the flow of hydraulic fluid to actuate a primary hydraulic system valve, a pilot controller lockout valve, and a detent control circuit for selectively energizing a detent solenoid coil connected to said pilot controller valve, the detent control circuit include a switch means for selectively disabling the detent solenoid coil when the pilot controller lockout valve is actuated to hydraulically disable the pilot controller, so as to prevent the detent solenoid coil from acting upon the pilot controller valve when the pilot controller is hydraulically disabled.

REFERENCES:
patent: 3759485 (1973-09-01), Mills
patent: 3978769 (1976-09-01), Day
patent: 4037519 (1977-07-01), Miller et al.
patent: 4195551 (1980-04-01), Schmiel
patent: 4220074 (1980-09-01), Reip
patent: 4777981 (1988-10-01), Petro

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