Appeal No. 2001-1398
Application 09/289,171
approximately one-half inch thick and made of a material such as
leather, includes a plurality of openings which may be
interchangeably filled with plugs 40 of the material (e.g.,
leather) cut out to form the openings or with similarly shaped
weights 44 of lead or other heavy metal to permit the weight of
the shoe to be adjusted and varied as desired (see column 3,
lines 31 through 51). Although the Shanahan reference teaches
that the member 20 is permanently built into the shoe (see column
2, lines 9 through 12 and 27 through 33), it also states that the
“weight-receiving member 20 will normally be permanently
connected to the (insole) 10" (column 3, lines 52 and 53),
thereby suggesting that the member can be removably placed in
the shoe.
Miyata also discloses a shoe for strengthening the muscles
of the leg. In general, the sole 1 of the shoe comprises an
insole 11, a middle sole 10, a rubber layer 14 and an outsole 9
(see Figures 1 and 2). In one embodiment (see Figures 1 through
3), the outsole 9 defines a plurality of weight chambers 6 which
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