Appeal No. 1997-4279
Application No. 08/486,702
We reverse the rejection of claim 15 under 35 U.S.C. §
103 as being unpatentable over the German reference in view of
Klebanow and Wahnschaff.
Claim 15, dependent from claim 1, adds the feature of "at
least one vacuum belt connected to a source of low pressure
for removing the overlapped sheets and adhesive coating
material from the transferring means."
Clearly, the Wahnschaff document (Fig. 1) reveals that
the utilization of a suction conveyor 21 in the coating art is
a known expedient for transporting coated sheets of material
such that the sheets cling to the conveyor. However, as can
be readily discerned from the Wahnschaff disclosure, suction
is applied exclusively to the upper flight of a conveyor belt
35, downstream of a coating station. Thus, even if the
apparatus of the German reference incorporated a suction
conveyor it would appropriately be applied downstream of a
coating station, following the teaching of Wahnschaff. Thus,
the combined teachings would not effect a vacuum belt for
removing overlapped sheets and adhesive coating material "from
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