Appeal No. 1998-0514
Application 08/523,907
such that at elevated temperatures, stress results in both the
cutter cylinder and the cutter holder to increase the rigidity
of the cutter holder.
We are aware that Gomi teaches that the average linear
expansion coefficients of the inner layers should be made
larger than the linear expansion coefficient of the outermost
layer to provide high rigidity in the axial direction (column
5, lines 50-58). However, we once again view this as
suggesting, at best, that the cutter cylinders of German ‘516
should be so constructed to provide for improved rigidity of
the cutter cylinders. Accordingly, we will not sustain the
rejection of claim 3, or claim 5 that depends therefrom, as
being unpatentable over the collective teachings of German
‘516 and Gomi.
Independent Claim 4
Claim 4 calls for a cross cutter comprising, inter alia,
cutter cylinders formed of a composite fiber material having a
heat expansion coefficient “a”, cutter holders formed of a
composite fiber material having a heat expansion coefficient
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