发明名称 Hydraulic control system
摘要 <p>The system comprises a hydraulic actuator having opposed openings adapted to alternately function as inlets and outlets for moving the element of the actuator in opposite directions. There is a pump for supplying fluid to the actuator. There is also a directional valve comprising pilot operated meter-in valves to which the fluid from the pump is supplied through first lines for controlling the direction of movement of the actuator and a pilot operated meter-out valve associated with each opening of the actuator for controlling the flow out of the actuator. The pressure of fluid supplied to the actuator by the meter-in valve is sensed and supplied to a line extending from the output of the meter-in valve. A valve is provided in this line to provide a force selectively on the meter-in valve opposing the movement of the meter-in valve by the pilot pressure. The valve may comprise either a modulating valve or a shut-off valve.</p>
申请公布号 DE4344610(A1) 申请公布日期 1995.06.29
申请号 DE19934344610 申请日期 1993.12.27
申请人 VICKERS INC., MAUMEE, OHIO, US 发明人 LONNEMO, KURT ROLAND, SEARCY, ARK., US
分类号 F15B13/02;(IPC1-7):F15B11/08;G05D16/00 主分类号 F15B13/02
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