Motors: expansible chamber type – With motive fluid valve – Pilot valve
Patent
1985-03-29
1986-03-11
Jordan, Charles T.
Motors: expansible chamber type
With motive fluid valve
Pilot valve
91388, 91403, 91410, 91469, F15B 13042
Patent
active
045746877
ABSTRACT:
An apparatus for positioning an adjustable member as a function of a command signal and a control condition, especially for the positioning of a hoisting mechanism on a tractor or the like, comprises an operating circuit and a control circuit. The operating circuit has a bidirectional positionable valve with a valve side and first and second control devices for regulating flow of pressure medium from a supply tank to the adjustable member. The control circuit connects a control pressure medium source to the control devices at first and second junctions and includes adjustable throttles and a flow-regulating valve. A first adjustable throttle is connected between the supply tank and the first junction. The second adjustable throttle is connected between the control pressure medium source and the first junction and in series with the first adjustable throttle. Third and fourth throttles are connection in series with the third throttle being connected between the supply tank and the second junction, and with the fourth adjustable throttle being connected between the control pressure medium source and the second junction. The flow regulating device is connected between the control pressure medium source and the first junction in parallel with the second adjustable throttle such that the flow regulating valve can be located in a remote location from the remaining controls, permitting remote operation of the adjustable member.
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Kauss Wolfgang
Schulte Heinz
Wittich Kurt
Jordan Charles T.
Klein Richard
Mannesmann Rexroth GmbH
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