Sport shoe with pneumatic inflating device

Details Sport shoe with pneumatic inflating device Sport shoe with pneumatic inflating device

1987-03-25

1988-08-16

Petrakes, John

Boots, shoes, and leggings

Soles

Cushion

36 3B, 36 35B, A43B 2128, A43B 1320, A43B 706

Patent

active

047634260

ABSTRACT:
There is a sports shoe with a sole (4) and an inflating device which is arranged under a convex part of the foot (3) and delimits a compression chamber (16) with a chamber body (1) as well as a chamber roof (14), the compression chamber having an inlet opening (17) and an outlet opening (18). It is desirable to improve the effect of the inflating device by minimizing the clearance space in the compression chamber. This is accomplished by forming the compression chamber (16) as a semi-lentil-shaped (dished) bowl which is conformed to fit the convex contour of the region of the foot (3) loading it and by having the inlet opening (17) as well as the outlet opening (18) arranged in the central area of the chamber (16). Since, on compression, the chamber cover will hug the bottom of the compression chamber, it is possible to produce a positive pressure commensurate with the down-stepping force applied.

REFERENCES:
patent: 1506975 (1924-09-01), Cooney
patent: 1568405 (1926-01-01), Keller
patent: 2122108 (1938-06-01), Modlin
patent: 3050875 (1962-08-01), Robbins
patent: 3670429 (1972-06-01), Androsiglio
patent: 4102061 (1978-07-01), Saaristo
patent: 4237625 (1980-12-01), Cole et al.
patent: 4358902 (1982-11-01), Cole et al.
patent: 4361969 (1982-12-01), Vermonet
patent: 4546555 (1985-10-01), Spademan
patent: 4674200 (1987-06-01), Sing

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