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US 5,311,678 AGranted
Shoe shock absorption system
OwnerRichard G. Spademaninventor
Life of this patent
Estimating the term…
Abstract
A shoe (1, 30, 6) is disclosed in which there is a provided sensing means (16, 45, 66) for transmitting the force of shoe-support surface impact from the bottom of the lower sole (2, 31, 61) to the upper shell (3, 32, 62) and foot as the foot is moved toward the bottom of the lower sole. Means are provided (17, 50, 65, 67) for varying the amount of force transmitted and length of time that the force is transmitted from the lower sole (2, 31, 61) to the upper shell (3, 32, 62) and foot.
Claims11
A shoe including an upper shell and a lower sole secured to the upper shell, the improvement comprising:
- means for sensing when a user of the shoe applies increased weight to the sole upon touching a support surface of the shoe;
- tightening means responsive to the sensing means for increasing the tightness of the fit of the shoe on a foot of the user as the user applies the increased weight to the sole;
- and
- additional means coupled to the tightening means for maintaining the tightening of the tightening means for period of time after the user of the shoe reduces said increased weight from the sole.
1 more element
Dependencies are inferred from the claim text.