Patent ID: 6338208
Filing Date: 2002-01-15
Classification: A43C

Abstract:
A removable sport shoe spike for attachment to the sole of a sport shoe wherein the sole has at least one internally threaded socket for receiving the spike, the spike comprising:(a) a disc having a top portion facing the sole of the shoe and having an opposing bottom portion connected to the top portion, the bottom portion engaging a ground surface when the spike is attached to the shoe; (b) a cylindrical threaded post extending perpendicularly from the center of the top of the disc, the threaded post being adapted lo be threadedly received by the threaded socket in the shoe sole; and (c) at least 19 spaced apart nubs extending perpendicularly outwardly from the bottom portion of the disc for providing traction between the shoe and the ground surface with nominal impact on the ground surface from gripping the ground surface with the nubs, the nubs having at least three different sizes, wherein the ratio of the length of the largest size nubs to the length of the smallest size nubs is approximately 1.5 or greater, and being dispersed substantially uniformly across the bottom portion of the disc in a close-packed hexagonal lattice arrangement.