Motors: expansible chamber type – With motive fluid valve – Relatively movable serial valves
Patent
1985-05-28
1987-02-24
Kyle, Deborah L.
Motors: expansible chamber type
With motive fluid valve
Relatively movable serial valves
60466, 60481, F15B 13042
Patent
active
046448497
ABSTRACT:
An apparatus for locking of an inertial mass drive hydraulic circuit system having a hydraulic pump, an actuator driven by the hydraulic pump for driving a relatively large inertial mass, and a directional control valve mounted in line connecting the hydraulic pump with the actuator. An on-off device is interposed between the actuator and the hydraulic pump for opening or closing the line, and a sensor is provided for sensing the discharge condition of the hydraulic pump. The sensor generates a signal for actuating the on-off device.
REFERENCES:
patent: 2633153 (1953-03-01), Gunn
patent: 4356760 (1982-11-01), Bouteille
Hitachi Construction Machinery Co. Ltd.
Klein Richard L.
Kyle Deborah L.
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