Demand compensated hydraulic system with flow sensitive device

Details Demand compensated hydraulic system with flow sensitive device Demand compensated hydraulic system with flow sensitive device

1977-06-24

1978-06-20

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60451, 60484, 417212, F16H 3946, F15B 1116

Patent

active

RE0296716

ABSTRACT:
A demand compensated hydraulic system includes a pump responsive to pressurized fluid in a demand feedback pilot line. The pilot line is connected to sense fluid demand between a hydraulic motor and its associated control valve which is closed by servo feedback from the motor. A flow sensitive device is interposed in an output line connecting the pump and the control valve to sense when the flow decreases until it is insufficient to operate the function. At a predetermined decreased flow rate, the flow sensitive device operates to momentarily connect the demand feedback pilot line to a reservoir to cause the pump to go into a stand-by condition.

REFERENCES:
patent: 2892311 (1959-06-01), Van Gerpen
patent: 2892312 (1959-06-01), Allen et al.
patent: 3754400 (1973-08-01), Parquet
patent: 3826090 (1974-07-01), Bahl

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