Appeal No. 1998-1807
Application No. 08/090,770
[22], the “somewhat smaller elongated projecting section” as
reading on the portion [28] and the “elongated working face”
as reading on the end face of the portion [28] (id. at 10).
Wiand teaches an abrasive pad comprising a flexible one-
piece abrasive sheet having a planar sheet portion [12] and a
plurality of spaced apart abrasive protrusion [14] intimately
molded with the planar sheet portion to form a one-piece sheet
(col. 1, lines 11-18). Wiand informs us that such pads are
commonly used on rotary polishers for polishing or finishing
marble and stone surfaces (id. at 29-31). The illustrated
embodiment is a circular pad having a central orifice [20] for
fitting on a rotary tool (col. 2, lines 48-51). The method
taught by the reference for making the abrasive pad includes
melt mixing a thermoplastic material, such as, nylon with an
abrasive grit and injecting the mixture into a mold where it
is heated under pressure to form the one-piece sheet (col. 3,
lines 46-68). Wiand also teaches a one-piece pad in which the
backing sheet is abrasive-free. In this embodiment, the
backing substrate or sheet [12] is first injection molded
using an abrasive-free thermoplastic material and, thereafter,
the thermoplastic-abrasive grit mix is injection molded onto
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