Electro-hydraulic actuator system

Details Electro-hydraulic actuator system Electro-hydraulic actuator system

2007-03-20

2007-03-20

Lazo, Thomas E. (Department: 3745)

Power plants

Pressure fluid source and motor

Apparatus having means responsive to or ameliorating the...

C060S468000, C060S473000, C244S078100

Reexamination Certificate

active

11288005

ABSTRACT:
The system includes a hydraulic powered actuator. A pump system having first and second hydraulic lines is coupled to the first and second ports, respectively and is capable of providing hydraulic fluid to either the first and second lines. First and second pressure sensors are coupled to the first and second lines, respectively. A third line is coupled between the first and second lines and includes first and second valves mounted in series therein. Preferably, the first and second valves are capable of latching in the open position. A reservoir is coupled to the third line between the first and second valves. A shut off valve is included for cutting off the flow from the reservoir.

REFERENCES:
patent: 4696163 (1987-09-01), Glomeau
patent: 5072584 (1991-12-01), Mauch et al.
patent: 5351914 (1994-10-01), Nagao et al.
patent: 5575150 (1996-11-01), Vieten et al.
patent: 6339929 (2002-01-01), Udagawa et al.
patent: 6470678 (2002-10-01), Huber
patent: 6543223 (2003-04-01), Muschong et al.
patent: 6625982 (2003-09-01), Van Den Bossche

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