Appeal No. 1999-2100
Application No. 08/850,825
slipper over which he believes his invention to be an
improvement. The Krippelz slipper is made from “bubble wrap”
material, which has a planar web on one side and a plurality
of upstanding bubbles on the other. The Krippelz slipper
comprises two sheets of bubble wrap material arranged in
layers. Although Krippelz teaches a first embodiment in which
bubbles contact the ground and a second embodiment in which
the planar web contacts the ground, it is basic to the
invention that bubbles always contact the sole of the user’s
foot, and such is the case in both embodiments. The purpose
of this is to provide effective ventilation so as to prevent
“plastic raincoat effect,” that is, heating and perspiration
dampness against the user’s skin (column 2, lines 17-22).
Therefore, insofar as the requirements of the appellant’s
claim 1 are concerned, Krippelz fails to disclose or teach the
substantially planar top and bottom webs spaced apart by a
middle web of a plurality of bubbles. Krippelz also has not
recognized the problem of the folding under of the heel
portions of this type of slipper.
Kolsky discloses a cushion material that can be used for
mats including “protective” devices for human beings (column
6
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