Shoe sole or insole with circulation of an incorporated fluid

Details Shoe sole or insole with circulation of an incorporated fluid Shoe sole or insole with circulation of an incorporated fluid

1989-03-10

1990-06-19

Sewell, Paul T.

Boots, shoes, and leggings

Soles

Cushion

36 25R, 36 43, 36 44, A43B 1338

Patent

active

049340700

ABSTRACT:
The present invention relates to a shoe sole or insole with circulation of an incorporated fluid, in which the upper surface of the shoe sole forms a chamber which is crushable under the pressure of the foot, said chamber being subdivided by slanting transverse blades having their edge independent of the deformable sheet closing said chamber and forming the lower surface of the shoe sole, this chamber communicating at the front and rear ends of the shoe sole with a chamber formed on the upper surface and closed in a tight manner by a thin sheet, both chambers being filled with a fluid, said thin sheets being welded at their periphery to the surface of a said peripheral edge.
According to the invention, the upper surface of said peripheral edge is connected to the upper surface of the separating plate by a slanting surface, and the side of said blade is rigidly connected to the neighbouring slanting surface of said peripheral shoulder by a thinned-out portion having a width which is substantially equal to the height of said blade.
The invention provides for an improved massage effect of the sole of the foot.

REFERENCES:
patent: 3871117 (1975-03-01), Richmond et al.
patent: 4123855 (1978-11-01), Thedford
patent: 4451994 (1984-06-01), Fowler
patent: 4567677 (1986-02-01), Zona
patent: 4802289 (1989-02-01), Guldager

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