Appeal No. 2001-0373 Page 5
Application No. 09/122,255
Claim 1 on appeal is directed to a poppet valve, comprising,
inter alia, (1) a valve body including a bore therein, the bore
having an inlet port for admitting fluid to the bore and at least one
seat; and (2) a spool having an annular groove, the spool disposed in
the bore slideably between a fully open position in which the spool
is spaced from the seat and the seat is fluidly connected to the
inlet port via the annular groove, and a closed position in which the
spool is engaging the seat. Claim 4 on appeal is directed to a
method for configuring a poppet valve for use in a valve including a
valve body, comprising the steps of (1) forming a bore in the valve
body; (2) forming a fluid passage in the valve body, the fluid
passage terminating at an inlet port in the bore to fluidly connect
the fluid passage with the bore via the inlet port; (3) forming a
seat in the bore; (4) forming a spool having a surface, an annular
groove in the surface, and a non-uniform diameter, and configured to
be able to engage with the seat in the bore so as to block fluid
communication past the seat in the bore; and (5) slideably disposing
the spool in the bore, such that the spool is slideable in the bore
between a first position in which the spool is spaced from the seat
so as to provide fluid communication from the inlet port, through the
annular groove, and past the seat, and a second position, in which
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