Harness, Dickey & Pierce
Shoe sole construction
 A shoe sole construction designed so as to be biodynamically shock-absorbing. In the sole are provided two cushions which are filled with a fluid and interconnected by means of a number of channels. One cushion is positioned underneath the heel of the foot and the other cushion is positioned underneath the transverse forward arch of the foot. When the wearer of the shoe sets down his foot into contact with the ground, the heel strikes the ground first and a shock-absorbing effect is then obtained as the rear cushion is compressed. Upon this compression, fluid flows from the rear cushion to the front cushion, which expands and lifts the front arch of the foot, releaving the weight thereon and supporting the front arch when the forefoot is set down on the ground. When the wearer continues the walking cycle, the forward cushion is compressed, causing the rear cushion to expand and the latter is again ready to provide a shock-absorbing effect upon the next step and heel strike. 
A A
A43B A43B
inventional inventional
Lars G. B.
Peterson