Fluid handling – Processes – With control of flow by a condition or characteristic of a...
Reexamination Certificate
2006-02-28
2006-02-28
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Processes
With control of flow by a condition or characteristic of a...
C137S599180, C251S318000
Reexamination Certificate
active
07004186
ABSTRACT:
A valve apparatus that includes surge relief includes a valve housing having an inlet port, an outlet port, and a poppet seat between the inlet port and the outlet port. The valve also includes a first moveable poppet piece having a closed position against the poppet seat that closes the valve. At least one surge discharge port passes through the first moveable poppet piece. The valve also includes a second moveable poppet piece compressionally biased in a position to seal the fluid discharge port or ports in the first moveable poppet piece. The second moveable poppet piece is responsive to a surge pressure when the valve is closed to unseal the surge discharge port or ports temporarily to relieve the surge pressure.
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US 4,784,176, 11/1988, Clough (withdrawn)
Fill Valve Engineering Drawing, Aug. 5, 1994 (4 pgs.).
Harness & Dickey & Pierce P.L.C.
Hepperle Stephen M.
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