Power transmission

F - Mech Eng,Light,Heat,Weapons – 15 – B

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Details

138/79.16

F15B 13/01 (2006.01) F15B 13/02 (2006.01)

Patent

CA 1169334

Abstract of the Disclosure A hydraulic control system comprising a hydraulic actuator having opposed openings adapted to alternately function as inlets and outlets for moving the element of the actuator in opposite directions, a pump for supplying fluid to said actuator, pilot operated meter-in valve means to which the fluid from the pump is supplied for controlling the direction of movement of the actuator, pilot operated meter-out valve means associated with each opening of the actuator for controlling the flow out of said actuator. The pressure of fluid being supplied to the actuator by the meter-in valve means is sensed and caused to produce a force opposing the movement of the meter-in valve means by the pilot pressure resulting in a smooth and accurate control of the movement of the actuator.

400185

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