Load sensing hydraulic system

Details Load sensing hydraulic system Load sensing hydraulic system

2005-06-21

2005-06-21

Look, Edward K. (Department: 3745)

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of...

Reexamination Certificate

active

06907728

ABSTRACT:
A load sensing hydraulic system includes two pumps, at least one hydraulic fluid consumer, and a pressure balance circuit. In the case of no demand from the consumer, hydraulic fluid flows from the pumps through the pressure balance circuit and to tank. In the case of demand from the consumer for hydraulic fluid at a flow rate less than or equal to the flow rate provided by the first pump, hydraulic fluid from the first pump flows to the consumer, and hydraulic fluid from the second pump flows to the tank. In the case of a demand from the consumer for hydraulic fluid at a flow rate greater than the capacity of the first pump, hydraulic fluid from both pumps flow to the consumer.

REFERENCES:
patent: 3760689 (1973-09-01), Johnston
patent: 5081837 (1992-01-01), Ueno
patent: 190431 (1985-12-01), None
patent: 989048 (1999-09-01), None
patent: 1565467 (1980-04-01), None

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