Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Reexamination Certificate
2008-01-29
2008-01-29
Bastianelli, John (Department: 3753)
Valves and valve actuation
Electrically actuated valve
Rotary electric actuator
C251S248000
Reexamination Certificate
active
11471649
ABSTRACT:
A coaxial valve includes a valve box having an inlet opening, an outlet opening, and a common flow channel. An axially movable cylindrical valve casing has an opening for a fluid inlet port and an opening for a fluid outlet port, both of which are joined up in the flow channel. A coaxially positioned shutoff mechanism located inside the valve box closes off the inlet port or the outlet port of the valve casing. To provide for axial movement, the valve casing has at least one external circular groove. The drive casing has at least one inner circular groove, which is adapted to the outer circular groove so that the inner and outer grooves are engaged, via inside ball bearings, to create a ball planetary gear and ball rotary spindle drive. The drive casing is turnable and forced to turn by a drive motor inside of the valve box.
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European Search Report dated Sep. 26, 2006 with an English translation of the pertinent portion (four (4) pages).
German Office Action dated Jun. 13, 2006 with English translation (Eleven (11) pages).
Gauss Adolf
Voit Arno
Bastianelli John
EADS Space Transportation GmbH
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