Detorquing heel control device for footwear

Details Detorquing heel control device for footwear Detorquing heel control device for footwear

1978-11-06

1981-05-26

Kee Chi, James

Boots, shoes, and leggings

Insoles

36 37, 36 71, A43B 1338, A43B 1900, A43B 2132

Patent

active

042689805

ABSTRACT:
A shock absorbing, relatively rigid but resilient slab for insertion in footwear as an insole or for being built integrally into the sole of footwear, extends across the shoe width and lengthwise from the outer rear border of the heel to the metatarsal heads of the foot of the wearer, has a smooth top surface with a heel concavity and a varus heel ridge extending transversely from the lateral to the medial side and inclined upward to a high level at the medial side and then continuing medially to the rear end of the heel cup and with a bottom having a solid lateral edge mitigating shock at the initial heel contact and from which radiate circumferentially in a clockwise direction around the heel for an arc of about 30.degree. and then along the medial edge, a plurality of longitudinally spaced ribs increasing in width along their length toward the medial side providing rotors which develop an external rotational force on the heel and tibiofibular leg unit of the wearer to detorque the internal rotation of the leg unit and pronation of the sub-talar joints and cause supination of the foot.

REFERENCES:
patent: 4120102 (1978-10-01), Kenigson
patent: 4168585 (1979-09-01), Gleichner

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