Appeal No. 2003-1349 Page 5
Application No. 09/768,969
boot during cold environmental conditions. Specifically, Yoshida employs the
introduction of exothermic heat inserts, Oatman uses a chamber with insulated particles
and heat reflective foil to reflect heat back to the foot of the wearer and Akagi uses
closely stitched foam layers to retain heat in cold weather conditions.
Figures 1-3 of Bulzomi show a heat vented work shoe with two upper external
portions constructed of leather, defining a cavity therebetween, a midsole insert and
tubes that permit air circulation within and out of the sole. As shown in Figures 1 and 2,
the shoe includes a conventional upper work shoe body (1), designed to accommodate
the foot of the wearer. The upper body (1), insulated on the interior with spongy
material (18), fits comfortably around the foot of the wearer, with a snugly fitting collar
(2). The upper shoe body has both an outer leather surface (16), constructed
preferably of 4 oz. thick leather, and an inner leather surface (17), made preferably of 2
oz. thick leather. The outer leather surface (16) has two rows of ventilation holes (3) at
the top of the shoe, beneath the collar (2). Foam insulation and man-made lining or
leather cover most of the inside of the shoe (18, 19), insulating the wearer's foot and
providing cushioned comfort. Attached to the upper body in a conventional manner is
the sole (15). The outsole portion is made out of standard neoprene, or an oil resistant
rubber, and has treading on the bottom surface for gripping the ground.
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Last modified: November 3, 2007