Pressurized porous material cushion shoe base

Details Pressurized porous material cushion shoe base Pressurized porous material cushion shoe base

1978-06-06

1980-10-28

Kee Chi, James

Boots, shoes, and leggings

Soles

Cushion

36 29, 36 43, A43B 1318, A43B 1320

Patent

active

042298890

ABSTRACT:
An air cushion shoe base has a sole and a vertical rim within which is filled in air tight relation with foam rubber which is tightly covered by an insole. The foam rubber forms small metering orifices for restricting and delaying fluid flowing forward and rearward in response to weight shifts of a foot. A valve is provided within the rim, and the valve has a central body with a long valve orifice and lateral extensions for joining the body to an inside of the rim. The shoe base is filled to a desired pressure which is maintained periodically through the valve. A T-shaped welt extends around an upper peripheral area of the rim and insole for joining the cushion base to a shoe upper.

REFERENCES:
patent: 3087262 (1963-04-01), Russell
patent: 3447251 (1969-06-01), Drexler
patent: 3795994 (1974-03-01), Ava
patent: 4008530 (1977-02-01), Gager

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