Appeal No. 2001-0394
Application 09/012,508
backing rolls can be improved through the use
of an air guide box system.
Id., page 6.
Based on our review of the reference teachings, we do
not agree with the examiner that one of ordinary skill in the
art would have been motivated to modify Beisswanger in view of
Heinzmann to achieve the claimed invention.
Beisswanger relates to a roll coating machine. The
primary goal of Beisswanger’s invention is to avoid air inclusion
in the wedge-shaped inlet zone between the coating roll and
mating roll so that a uniform coating may be achieved. See
Beisswanger, column 1, lines 26-54. Beisswanger achieves this
goal through the use of an air doctor 25 for removing air
entrained by the opposite side of a material web and an
applicator roll. In fact, Beisswanger states that his invention
provides a “hermetically sealed” system in the inlet zone. See
id., column 2, lines 15-20. There is absolutely no indication in
Beisswanger that stabilization of the running web would be of
concern in a roll coating operation.
As pointed out by appellant, Heinzmann’s invention,
though useful in paper-making processes, is primarily designed
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