Appeal No. 2004-0554
Application No. 09/612,394
valve actuator 110 and hydraulic actuator 112. See page 4 of
Appellants' specification. Figures 2 and 3 are a pictorial
representation of a portion of system 100, and a representation
showing valve 108 in partial cross section. Figures 2 and 3 show
that valve actuator 110 includes translational position generator
120, lever 122 and fulcrum assembly 138. Figures 2 and 3 also
show that valve 108 includes a valve housing 124 and a valve
spool 126 slidably movable within housing 124. See page 6 of
Appellants' specification. When channel 204 is aligned with the
inlet and outlet ports, hydraulic fluid under pressure is passed
from inlet end 114 to outlet end 116 which provides hydraulic
fluid under pressure to hydraulic actuator 112 which, in turn,
imparts a physical shock on disc drive 102. See page 7 of
Appellants' specification.
Independent claim 21 is representative of Appellants'
claimed invention and is reproduced as follows:
21. An impact tester for impact testing a test specimen,
comprising:
a fluid line containing a pressurized fluid;
a valve, comprising an open position and a closed position,
in the fluid line defining an upstream portion of the fluid line
containing the pressurized fluid and a downstream portion of the
fluid line isolated from the pressurized fluid in the closed
position of the valve and in fluid communication with the
pressurized fluid in the open position of the valve;
22
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