Appeal No. 2006-1430
Application No. 10/005,484
THE INVENTION
Appellants’ invention is a media control valve used to control flow of
media into a fluid stream to treat a surface (Specification 1). The valve
includes a body 20 having a media inlet 22 and a media outlet 24, a sleeve
32 positioned within the body and having a media opening 34, and a plunger
30 positioned within the body and movable to assume all positions between
a fully open position and a fully closed position. In the fully closed position,
the plunger completely blocks the media opening; in the fully open position,
the plunger does not obstruct any of the media opening; and, in positions
between the fully closed and fully open positions, the plunger partially
obstructs the media opening. Independent claim 23 is representative of
Appellants’ invention and reads as follows:
23. A media control valve, comprising:
a body having a media inlet and a media
outlet;
a flow path within the body including the
media inlet and the media outlet;
an air-actuated closing member positioned
within the body and constructed and arranged to
provide all metering positions from a fully closed
position to a fully open position.
2
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