Kinetic energy returning shoe

Details Kinetic energy returning shoe Kinetic energy returning shoe

1988-05-18

1989-08-22

Watkins, Donald

Boots, shoes, and leggings

Insoles

Laminated

36 28, 36102, A43B 1318, A43B 1338

Patent

active

048583383

ABSTRACT:
An insert for a shoe sole is provided which includes a strip made of an elastic material disposed between an outer sole portion and an upper sole portion of the sole of a shoe. The strip extends from the outer heel area of the shoe to the border of the large toe area of the shoe. The strip forms a rocker bottom which cradles the first metatarsal head of the foot of the wearer. The roll point of the rocker bottom is disposed in a range of from the toe break of the wearer to approximately 2.5 centimeters behind the toe break of the wearer.

REFERENCES:
patent: 3835558 (1974-09-01), Revill
patent: 4231169 (1980-11-01), Toyama et al.
patent: 4360027 (1982-11-01), Friedlander et al.
patent: 4597195 (1986-07-01), Dananberg
patent: 4612713 (1986-09-01), Brown
patent: 4615126 (1986-10-01), Mathews
patent: 4628621 (1986-12-01), Brown

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