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

1975-12-29

1977-01-25

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60445, 60449, 60451, 60484, F16H 3946

Patent

active

040044181

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

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