Boots – shoes – and leggings – Soles – Cushion
Patent
1991-11-21
1994-02-08
Meyers, Steven N.
Boots, shoes, and leggings
Soles
Cushion
36 29, A43B 1320
Patent
active
052839630
ABSTRACT:
A shoe sole comprising a case having a liquid-filled chamber which isostatically redistributes pressure on the weight-bearing portion of the foot is disclosed. The pressure created in the liquid-filled chamber is applied against the peripheral wall of the chamber. A first portion of the peripheral wall is able to buckle and store energy when the foot pushes against the ground and to release the stored energy, spring-like, into the liquid-filled chamber when the foot moves from the ground. The remainder of the peripheral wall does not buckle at pressure levels at which the first portion buckles, thereby protecting the sole from a sliding phenomenon which would cause structural instability of the sole while buckling. A force magnifying or dividing ability may also be provided by forming the surface of the chamber bottom with an area which differs from the area of the surface of the chamber ceiling which is in immediate contact with the weight-bearing surface of the foot.
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Dabuzhsky Leonid
Lerner Moisey
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