Inner sole for shoe

Boots – shoes – and leggings – Boots and shoes – Ventilated

Patent

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Details

36 3R, 36 44, A43B 706, A43B 1340

Patent

active

049743422

ABSTRACT:
An inner sole for a shoe which has upper and lower foot form sheets bonded through an elastic porous material to the heel of the rear portion thereof and through spaces to the front portion thereof, a suction valve provided in a portion to be bonded to the elastic porous material of the lower foot form sheet, an air feed valve provided at the front of the elastic porous material, and an air discharge hole formed at the front portion of the upper foot form sheet in such a manner that the discharge hole is communicated through an air feed passage, obtained between the spacer, with the valve hole of the suction valve. Thus, a foot is hardly moistened even if the shoe is worn for a long time.

REFERENCES:
patent: 3142912 (1964-08-01), Larsen
patent: 3180039 (1965-04-01), Burns, Jr.
patent: 3225463 (1965-12-01), Burnham
patent: 3475836 (1969-11-01), Brahm
patent: 3716930 (1973-02-01), Brahm
patent: 4215492 (1980-08-01), Sandmeier
patent: 4224746 (1980-09-01), Kim
patent: 4776110 (1988-10-01), Shiang

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