Fluid handling – Systems – Multi-way valve unit
Reexamination Certificate
2005-03-17
2008-11-11
Fox, John (Department: 3753)
Fluid handling
Systems
Multi-way valve unit
Reexamination Certificate
active
07448409
ABSTRACT:
A fluid flow control device includes a body defining an inlet, an outlet, and a fluid flow path extending from the inlet to the outlet. A valve seat ring is coupled to the body and defines an orifice through which the fluid flow path passes. A cage is also coupled to the body and defines an interior bore, wherein the cage includes at least one passage through which the fluid flow path passes. A throttling element is sized for insertion into the cage interior bore and movable along an axis between open and closed positions. The throttling element defines a sealing surface oriented substantially parallel to the axis. A seal is positioned to engage the sealing surface when the throttling element is substantially in the closed position, thereby to restrict fluid flow through the valve seat ring orifice.
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International Search Report received in International (PCT) Application PCT/US2006/003201 by the European Patent Office, dated Jun. 1, 2006.
Written Opinion for Application PCT/US2006/003201 by the European Patent Office, dated Jun. 1, 2006.
Micheel Raymond W.
Westwater David J.
Fisher Controls International LLC
Fox John
Marshall & Gerstein & Borun LLP
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