Boots – shoes – and leggings – Heels – Cushion
Patent
1991-05-31
1992-12-22
Sewell, Paul T.
Boots, shoes, and leggings
Heels
Cushion
36 69, 36 37, 36 71, 36173, A43B 732, A43B 2132
Patent
active
051724944
ABSTRACT:
A foot cushioning device to absorb shock primarily shock due to heel strike which device is insertable in or may be incorporated in footwear. The exterior of the body of the device carries primary shock absorbers extending at least from the portion of the device in the heel area. The primary shock absorber deforms to protect the foot by absorbing initial shock loads. Secondary shock absorbers are also provided which with increased deformation will provide resistance to higher shock load so that a non-linear force displacement behavior similar to that occurring in the natural heel pad occurs. In the preferred embodiment, the body of the device is a heel cup and the primary and secondary shock absorbing members are defined by longer and shorter ribs extending longitudinally and transversely along the outer surface of the heel cup in a grid-like pattern.
REFERENCES:
patent: 456677 (1891-07-01), McIntyre
patent: 832375 (1906-10-01), Gordon
patent: 3641688 (1972-02-01), von den Benken
patent: 4120102 (1978-10-01), Kenigson
patent: 4179826 (1979-12-01), Davidson
patent: 4398357 (1983-08-01), Batra
patent: 4776109 (1988-10-01), Sacre
patent: 4974343 (1990-12-01), Davidson
Nelson Gregory J.
Patterson Marie D.
Sewell Paul T.
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