Valves and valve actuation – Biased trip – With second diverse control
Reexamination Certificate
2007-01-16
2007-01-16
Bastianelli, John (Department: 3751)
Valves and valve actuation
Biased trip
With second diverse control
C251S068000, C251S236000
Reexamination Certificate
active
11002287
ABSTRACT:
A valve housing1with valve seat10incorporated in a fluid line features a closing element2with a valve disk11and a valve stem12extending through and sealed in the housing wall which, on the outer side, is locked by means of a locking pin17actuated by a solenoid. Owing to the geometry of the valve disk and the annular gap20as well as the action of a spring element23, the inlet-side pressure acting upon the closing element2exceeds the outlet-side pressure, as a result of which the fluid flow via the annular gap is interrupted in only a few milliseconds merely by the permanently present, higher mechanical pressure if the valve stem is released merely by the movement of the locking pin effected by a small and lightweight solenoid18, actuated on the basis of a signal indicating an event.
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German Search Report dated Jul. 21, 2004.
Bastianelli John
Klima Timothy J.
Rolls-Royce Deutschland Ltd & Co KG
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