Self-contained hydraulic actuator system

Details Self-contained hydraulic actuator system Self-contained hydraulic actuator system

2007-07-31

2007-07-31

Kershteyn, Igor (Department: 3745)

Power plants

Pressure fluid source and motor

Pump means moves motive fluid from one chamber to an...

C060S415000, C060S476000

Reexamination Certificate

active

11186946

ABSTRACT:
The hydraulic linear actuator system of the present invention includes a pump that is configured to rotate in a single direction at a substantially constant velocity. Both the direction and flow rate of fluid through the system is controlled by adjusting the positional relationship between the stator and the rotor of the pump. This positional relationship is adjustable between a forward flow state, a non-flow state and a reverse flow state. The hydraulic linear actuator is responsive to the flow of fluid through the system so as to be displaced in a first direction by the forward flow state of the pump and in a second direction by the reverse flow state of the pump.

REFERENCES:
patent: 3902318 (1975-09-01), Becker et al.
patent: 5144801 (1992-09-01), Scanderbeg et al.
patent: 5181380 (1993-01-01), Favre et al.
patent: 6494039 (2002-12-01), Pratt et al.
patent: 6519939 (2003-02-01), Duff

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