Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate
2005-10-07
2008-12-30
Rivell, John (Department: 3753)
Fluid handling
Line condition change responsive valves
Direct response valves
C137S542000, C137S550000
Reexamination Certificate
active
07469712
ABSTRACT:
A valve for the fuel system of a turbine engine works to relieve high pressure transients in the liquid fuel side of the turbine engine arising from the elevated ambient temperatures of operation of the turbine on gaseous fuel. The valve also prevents significant pressure losses during turbine start-up and sustained operation. The valve is bi-stable and has a liquid fuel driven poppet that toggles between one of two closed positions to interrupt flow through the valve when below a lower pressure limit and when above an upper pressure limit. The poppet moves to an intermediate position temporarily to permit pressure relief. A method of operating such a valve is also provided.
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Jansen's Aircraft Systems Controls, Inc.
Quarles & Brady LLP
Rivell John
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