Patent ID: 6698110
Filing Date: 2004-03-02
Classification: A43B

Abstract:
A shoe unit comprising:a) an outer sole; b) a plurality of conical spikes mounted on said outer sole, each spike having a height dimension measured from said outer sole; c) a foam cushion mounted on said outer sole and having a first wall fixed to said outer sole, a second wall and a thickness dimension measured between the first wall and the second wall; d) a plurality of bores defined in said foam cushion, each bore accommodating a spike of said plurality of spikes; e) said foam cushion being compressible between a pre-compressed condition with the thickness dimension of said foam cushion being essentially equal to the height dimension of said spikes when no compressive force is applied to said foam cushion via said outer sole, the thickness dimension of said foam cushion being less than the height dimension of the spikes of said plurality of spikes when compressive force is applied to said foam cushion via said outer sole; and f) the bores defined in said foam cushion being sized and shaped so the foam cushion adjacent to the bores is spaced apart from-said spikes when said foam cushion is in the pre-compressed condition and the bores defined in said foam cushion being further sized and shaped so said foam cushion adjacent to the bores will contact said spikes when said foam cushion is being moved into the compressed condition by compressive force applied to said foam cushion via said outer sole, said foam cushion contacting said spikes prior to reaching the compressed condition.