Appeal No. 98-1207 Page 8
Application No. 08/420,648
skill in the art. See In re Young, 927 F.2d 588, 591, 18
USPQ2d 1089, 1091 (Fed. Cir. 1991) and In re Keller, 642 F.2d
413, 425, 208 USPQ 871, 881 (CCPA 1981). Moreover, in
evaluating such references it is proper to take into account
not only the specific teachings of the references but also the
inferences which one skilled in the art would reasonably be
expected to draw therefrom. In re Preda, 401 F.2d 825, 826,
159 USPQ 342, 344 (CCPA 1968).
With this as background, we analyze the prior art applied
by the examiner in the rejection of the claims on appeal.
Downey discloses an earth moving vehicle including a
scraper for collecting rocky earth and other native material
(Figure 2) to be carried upwardly by an endless paddle
elevator (Figure 4) across a bar-type separating means (i.e.,
a grizzly) for separating the material into fines and larger
aggregates or tailings. The fines drop through the separator
onto a continuously moving transverse conveyor adapted to
discharge the fines along a line parallel to the line of
vehicle movement and spaced laterally therefrom, for example
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