Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Reexamination Certificate
2007-04-10
2007-04-10
Bastianelli, John (Department: 3753)
Valves and valve actuation
Mechanical movement actuator
Particularly packed or sealed
C251S319000
Reexamination Certificate
active
10511147
ABSTRACT:
A thruster valve for controlling a flow of high temperature fluid, comprising a valve casing, a graphite liner, a drive rod, and at least one relief hole. The graphite liner is disposed in a through hole within the valve casing. The drive rod being slidably received in drive rod through holes within the graphite liner, such that a seal is formed and maintained between the drive rod and the graphite liner. The drive rod is arranged so as to be driven in an axial direction by an actuator attached to an end of the drive rod arranged outside the valve casing. At least one of the relief holes is formed to extend through the graphite liner and valve casing to communicate the cavity with the exterior of the valve casing provide a drain passage. Thus, leakage of the high temperature fluid is prevented.
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Bastianelli John
Mitsubishi Heavy Industries Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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