Boots – shoes – and leggings – Antislipping devices – String type
Patent
1975-04-02
1977-05-17
Lawson, Patrick D.
Boots, shoes, and leggings
Antislipping devices
String type
A43B 2328
Patent
active
040232840
ABSTRACT:
An Anti-Slip device for footwear, walking sticks and the like, comprises a heel member, a ground-engaging protrusion composed of relatively soft material depending downwardly beneath said heel member, a resiliently flexible flange or membrane of ring form interconnecting said heel member and said protrusion, and a gripping ring composed of relatively hard material disposed on said protrusion. The heel member has a hollow recess above said flexible flange or membrane, and the arrangement is such that so long as no slipping occurs the gripping ring remains in spaced relationship with the ground out of contact therewith but as soon as slipping commences the ground-engaging protrusion pivots sideways by flexing of the flexible flange or membrane and causes a lower edge portion of the gripping ring to be thrust into contact with the ground so as to restrain the slipping.
REFERENCES:
patent: 1165235 (1915-12-01), Emery
patent: 2303744 (1942-12-01), Jacobs
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