Appeal No. 2001-0592
Application 09/110,824
including a backing layer (typically formed of paper), an
abrasive bearing layer (typically formed of a resin-based
maker coat upon which are deposited abrasive grains before the
resin is cured and a resin-based size coat that helps anchor
the abrasive grains to the substrate when the resin-based
layers are later cured), and a pattern of holes in the belt
which pass through at least the abrasive bearing layer of the
belt, in locations and in numbers sufficient to provide
improved flexibility to the belt. As noted on page 1 of the
specification, the problem confronted by appellant is the fact
that the resin typically used on such abrasive belts tends to
be very hard and inflexible, and thus results in a belt that
is itself very stiff and inflexible. This creates a problem
because such belts must necessarily pass around pulleys when
in action. Although appellant notes on page 1 of the
specification that other solutions to this problem have been
proposed in the prior art, appellant urges that the present
invention is a further solution to the problem that requires
minimum disruption to existing processes and can simply be
added to conventional production schemes. In addition,
2
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