초록 ▼

There is disclosed an inflatable inner sole for a shoe or boot which is formed of upper and lower plastic sheets having the shape and size of a sole and bonded together in a continuous seam about their peripheral edges thereby forming a sealed interior. A plurality of this continuous seams are forme

There is disclosed an inflatable inner sole for a shoe or boot which is formed of upper and lower plastic sheets having the shape and size of a sole and bonded together in a continuous seam about their peripheral edges thereby forming a sealed interior. A plurality of this continuous seams are formed between the upper and lower sheets to create within the sealed interior a plurality of interconnecting tubular passageways. The inflatable inner sole is provided with an air pump that preferably is mounted at the heel of the inner sole. The air pump is a flexible bulb with an inlet valve and discharges into a flexible tube which extends to a pressure control valve and then to the interior chamber of the inflatable inner sole. The pressure relief valve is manually adjustable to control the pressure within the inflatable inner sole. Excess air from the pressure control valve is directed into channels formed on the undersurface of the inner sole where it discharges through sealed apertures in the inner sole thereby providing forced air circulation in the shoe. Alternatively a manually operated air pump can be provided and the inner sole can be provided with inflatable upper linings for the shoe or boot.

대표청구항 ▼

An inflatable lining for a shoe which comprises: a. an air enclosure having flexible walls of plastic film and including a portion having the size and shape of the sole of said shoe with a sealed interior and with a plurality of discontinuous seams between its opposed surfaces disposed at preselecte

An inflatable lining for a shoe which comprises: a. an air enclosure having flexible walls of plastic film and including a portion having the size and shape of the sole of said shoe with a sealed interior and with a plurality of discontinuous seams between its opposed surfaces disposed at preselected locations to subdivide said sealed interior into a plurality of interconnected zones having freedom of air flow therebetween; and b. pressure inflation means comprising: (1) a flexible and resilient bulb; (2) an inlet port opening into said bulb; (3) a discharge port communicating from said bulb to said sealed interior of said lining; (4) a pair of check valves with one each of said check valves being positioned in a respective one of said inlet and discharge ports in opposite flow directions, whereby said bulb functions as a pump, to increase the pressure of air within said sealed interior of said lining; and (5) a pressure control valve in communication with said sealed interior of said lining and adjustable to regulate the pressure of air within said lining, whereby the resiliency and softness of said lining can be adjusted.