Athletic shoe with an enhanced mechanical advantage

Details Athletic shoe with an enhanced mechanical advantage Athletic shoe with an enhanced mechanical advantage

1990-04-05

1991-09-17

Meyers, Steven N.

Boots, shoes, and leggings

Soles

Rubber

36 25R, 36 59C, A43B 500, A43B 1314

Patent

active

050482033

ABSTRACT:
An athletic shoe comprises an upper member and a sole member. The sole member is characterized in having a substantially flat bottom surface, a lateral channel in the sole's bottom surface at the metatarsal area of the user's foot, and a set of inwardly concave longitudinally extending channels in the sole's bottom surface. A plurality of vertically extending grooves in the sole member's side walls are provided in a preferred embodiment. The structural features in the sole member impart a mechanical advantage to the user of the athletic shoe while not impairing the comfort of the shoe.

REFERENCES:
patent: D288027 (1987-02-01), Tonkel
patent: D290660 (1987-07-01), Selbiger
patent: 500385 (1893-06-01), Hall
patent: 4026044 (1977-05-01), Senter
patent: 4132016 (1979-01-01), Vaccari
patent: 4378643 (1983-04-01), Johnson
patent: 4439936 (1984-04-01), Clarke et al.
patent: 4559723 (1985-12-01), Hamy et al.
patent: 4559724 (1985-12-01), Norton
patent: 4562651 (1986-01-01), Frederick et al.
patent: 4624062 (1986-11-01), Autry

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