Appeal No. 2000-1472
Application No. 08/855,104
type valves including a shim (non-planar valve plate 124a).
As to the language in claim 1 describing the shim as an
annular member having an outer diameter that is not greater
than the outer peripheral edges of the series of apertures
with which it is associated, the examiner notes that “shim”
124a does not extend beyond the left most portion of aperture
122.
With reference to Figure 3, the examiner describes
Axthammer as disclosing a piston 218 dividing a cylinder 210
into first and second fluid chambers 12a and 12b, a first and
second series of apertures 220 and 222 extending through the
piston from one fluid chamber to the other, a first plate type
valve (shown by plates 224b1, 224b2, 224a, 224c1, 224c2 and
224c3) for controlling the flow through the first and second
series of apertures and a second plate type valve (shown in
Fig. 3 located above apertures 220 and 222) for controlling
the flow through the first and second series of apertures, at
least one of the plate type valves comprising a shim 224a
interposed between the plates for controlling the preload at
which the one plate type valve opens to permit flow through
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