Shoe sole with twist flex feature

Details Shoe sole with twist flex feature Shoe sole with twist flex feature

1989-04-26

1991-05-07

Meyers, Steven N.

Boots, shoes, and leggings

Antislipping devices

String type

36 59R, 36114, A43B 500

Patent

active

050125974

ABSTRACT:
An athletic shoe sole (10) includes a twist flex portion (18) positioned generally below the ball region of the user's foot. The twist flex portion (18) is defined by intersecting diagonal grooves (20, 22, 24, 26) and diamond shaped cleats (44, 46) between the grooves. A truncated pivot ball (28) is located in a toe portion (12) of the shoe. A similar pivot ball (38) is located in the heel portion (16) of the shoe. Grooves and ribs are provided in several regions of the shoe sole (10) for facilitating flexing of the shoe sole (10) in a direction perpendicular to the ribs and grooves, and for stiffening the shoe sole (10) in a direction longitudinally of the ribs and grooves.

REFERENCES:
patent: 2162912 (1939-06-01), Craver
patent: 3680231 (1972-08-01), Dymond
patent: 4151661 (1979-05-01), Namba et al.
patent: 4562651 (1986-01-01), Frederick et al.
patent: 4624062 (1986-11-01), Autry
patent: 4724624 (1988-02-01), Duccos
patent: 4747220 (1988-05-01), Autry et al.
patent: 4760652 (1988-08-01), Austin
patent: 4783910 (1988-11-01), Boys, II et al.
patent: 4890398 (1990-02-01), Thomasson
patent: 4897936 (1990-02-01), Fuerst

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