Shoe insert

Details Shoe insert Shoe insert

1984-06-04

1986-02-25

Schroeder, Werner H.

Boots, shoes, and leggings

Insoles

36 29, 36 44, A43B 1340

Patent

active

045718539

ABSTRACT:
A shoe insert in the form of an envelope which is air impervious and having a pad of cushionable material positioned in the space defined within the envelope. The envelope is provided with a predetermined number of holes of predetermined diameter through the top surface thereof to provide controlled egress and ingress of air from and to the envelope as the wearer walks thereon and thereby providing unusual shock absorption and ventilation properties to the insert.

REFERENCES:
patent: 2300681 (1942-11-01), Margolin
patent: 2411479 (1946-11-01), Tarlow
patent: 2917844 (1959-12-01), Scholl
patent: 3105985 (1963-10-01), Reid et al.
patent: 3256621 (1966-06-01), Linton
patent: 3693269 (1972-09-01), Guarrera
patent: 3785069 (1974-01-01), Brown
patent: 3903620 (1975-09-01), Gillet
patent: 4336661 (1982-06-01), Medrano

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