Boots – shoes – and leggings – Boots and shoes – Occupational or athletic shoe
Patent
1990-01-30
1991-08-20
Meyers, Steven N.
Boots, shoes, and leggings
Boots and shoes
Occupational or athletic shoe
36 44, A43B 500
Patent
active
050403133
ABSTRACT:
An athletic shoe includes impact sensing means disposed in contact with the impact cushioning material disposed between the inner sole and the outer sole of the shoe. The impact sensing means comprises a rupturable material having encapsulated dye. If the impact pressure effective upon the medium exceeds a predetermined value, the medium ruptures, releasing the dye for providing a visual indication that the impact pressure exceeded a predetermined value. A plurality of strips of rupturable material can be provided, each rupturing at a different pressure and each having dye of a respectively different color.
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Garre Maryjo S.
Simjian Luther G.
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