Remote hydraulic control systems

Details Remote hydraulic control systems Remote hydraulic control systems

F - Mech Eng,Light,Heat,Weapons

15

B

F15B 13/00 (2006.01) F15B 13/042 (2006.01)

Patent

CA 2120083

Abstract of the Disclosure Response times for a remote hydraulic control system having control lines from a remote controller to a main control valve of 50 feet or more are reduced by providing actuator pistons which are operated at a second pilot hy- draulic pressure less than a first pilot hydraulic pressure used for moving a valve spool within the main control valve. The actuator pistons open valves which allow hy- draulic fluid at the higher pilot pressure to push the valve spool. "Off" times are further reduced by continu- ously bleeding off a portion of the hydraulic fluid applied to the actuator pistons at the second hydraulic pressure.

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