Valves and valve actuation – Electrically actuated valve – With nonelectrical actuator
Reexamination Certificate
2008-02-01
2011-11-29
Bastianelli, John (Department: 3753)
Valves and valve actuation
Electrically actuated valve
With nonelectrical actuator
C251S335300
Reexamination Certificate
active
08066256
ABSTRACT:
An actuator assembly for actuating a valve includes an extensible bellow having an open end and a closed end, a stem operable to contact the closed end and to actuate a stopper mechanism, and a driver configured to move the bellow. The movement of the bellow effects movement of the stem to actuate the valve. In one embodiment, the driver acts to compress the bellow, the compression causing movement of the stem to open the valve. The bellow may be hermetically sealed to the valve housing, thereby allowing a higher range of fluid pressures.
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Birkelund Michael
Platz Christian
Bastianelli John
Danfoss A/S
McCormick Paulding & Huber LLP
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