Appeal No. 1999-2062 Page 5
Application No. 08/928,311
with a plurality of rib members with the spacing between
adjacent ones of the plurality of rib members being
established as a function of an angle passing through the
center of the grinding roll and wherein this angle X is
defined as:
X = ARC COS [((O.5)(DM)) - ((.375)(ECD)]
(O.5)(DM)
wherein: DM = the mean diameter of the grinding roll
ECD = the estimated depth of solid material the mean
diameter of the grinding roll. With respect to the rejection
of claim 26, the appellants argue on page 6 of the brief that
the rejection over the Hunt reference is improper.
Specifically, the appellants point out that Hunt does not
disclose or suggest a method of manufacturing a grinding roll
which includes a tread surface formed by a plurality of rib
members which extend radially outwardly from the external
portion at a height
which decreases in the direction from the smaller diameter end
of the external portion toward the larger diameter end of the
external portion.
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