Hydraulic system

Details Hydraulic system Hydraulic system

2007-12-27

2010-11-09

Lazo, Thomas E (Department: 3745)

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

C060S414000

Reexamination Certificate

active

07827787

ABSTRACT:
A ground engaging vehicle including a movable member, a hydraulically driven actuator, a hydraulic pump, a plurality of valves and at least one hydraulic conduit. The hydraulically driven actuator is coupled to the movable member and the actuator has a first chamber and a second chamber. The plurality of non-proportional valves include a first valve, a second valve, a third valve and a fourth valve. The at least one hydraulic conduit couples the pump with the first valve and the second valve. The first valve is in direct fluid communication with the first chamber. The second valve is in direct fluid communication with the second chamber. The third valve is in direct fluid communication with the first chamber and the fourth valve is in direct fluid communication with the second chamber. The first valve and the second valve each include an open position and a closed position.

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