Shoe with naturally contoured sole

Details Shoe with naturally contoured sole Shoe with naturally contoured sole

1993-12-08

1996-08-13

Sewell, Paul T.

Boots, shoes, and leggings

Soles

Rope

36 30R, 36 31, 36114, 36 88, A43B 1314

Patent

active

055444296

ABSTRACT:
A construction for a shoe, particularly an athletic shoe such as a running shoe, includes a sole that conforms to the natural shape of the foot, particularly the sides, and that has a constant thickness in frontal plane cross sections. The thickness of the shoe sole side contour equals and therefore varies exactly as the thickness of the load-bearing sole portion varies due to heel lift, for example. Thus, the outer contour of the edge portion of the sole has at least a portion which lies along a theoretically ideal stability plane for providing natural stability and efficient motion of the shoe and foot particularly in an inverted and everted mode.

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patent: 4989349 (1991-02-01), Ellis, III
patent: 5025573 (1991-06-01), Giese et al.
patent: 5224810 (1993-07-01), Pitkin
patent: 5317819 (1994-06-01), Ellis, III
B 23257 VII/71 A May 1956 German Published Application (Bianchi).
Influence of Heel Flare and Midsole Construction on Pronation, Supination, and Impact Forces for Heel-Toe Running, Nigg and Bahlsen, vol. 4, No. 3, Aug. 1988.
Executive Summary and Prototype.

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