Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate
2006-01-03
2006-01-03
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Line condition change responsive valves
Direct response valves
C137S260000, C137S493900, C137S513500, C137S550000, C251S284000
Reexamination Certificate
active
06981516
ABSTRACT:
The invention relates to an apparatus that acts as a fail save shut off valve. More specifically, the invention relates to a fail save shut off valve that allows fluid flow during normal operational conditions, but prevents the flow of fluids in the event of system failure upstream that causes over-pressurization. The present invention is particularly well suited for use in conjunction with hot gas filtering systems, which utilize ceramic candle filters. Used in such a hot gas system the present invention stops the flow of hot gas and prevents any particulate laden gas from entering the clean side of the system.
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Gottlieb Paul A.
Krishnamurthy Ramesh
Lally Brian J.
Park Daniel D.
The United States of America as represented by the United States
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