PVC insole with flat bottom and with the top surface made up of

Details PVC insole with flat bottom and with the top surface made up of PVC insole with flat bottom and with the top surface made up of

1988-12-16

1990-06-19

Schroeder, Werner H.

Boots, shoes, and leggings

Soles

Cushion

36 43, 36 44, A43B 1320

Patent

active

049340719

ABSTRACT:
The instant invention concerns an insole with a flat bottom and with the top surface made up of hollow semispherical or cylindrical humps. Once this insole has been affixed to the sole, whether it be made of PVC foam or polyurethane or wood or any other material, a single piece is formed with a series of completely airtight air tubes.

REFERENCES:
patent: 2090881 (1937-08-01), Wilson
patent: 3589037 (1971-06-01), Gallagher
patent: 4217705 (1980-08-01), Donzis
patent: 4345387 (1982-08-01), Daswick
patent: 4779359 (1988-10-01), Famolare

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