Boots – shoes – and leggings – Boots and shoes – Ventilated
Patent
1994-03-21
1996-05-14
Hilliard, Thomas P.
Boots, shoes, and leggings
Boots and shoes
Ventilated
36 3B, A43B 706
Patent
active
055156223
ABSTRACT:
A ventilation system for footwear having an upper and sole assembly in which perforations or openings in the sole assembly connect the interior of the shoe through a duct or passage into a pumping chamber or air bag. A pair of one-way valves connect the duct to the chamber or air bag and from the chamber or air bag outwardly through a single valve in the rear of the heel of the shoe for movement of air rearwardly through the shoe. The air bag is preferably 23.3 percent in volume of the total volume of the interior of the shoe.
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Ewing Athletics Co., Ltd.
Hilliard Thomas P.
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