Patent ID: 6793996
Filing Date: 2004-09-21
Classification: A43B,A43C,Y10T

Abstract:
A shoe, comprising:an outsole including a projected portion having a ground-contact surface formed thereon, said outsole including a heel portion and a forefoot portion; and a plurality of spikes located on the heel portion and the forefoot portion of said outsole, each of said plurality of spikes being removably mounted to said outsole and including a disk shaped portion and a plurality of pins and having a ground-contact portion, an entirety of said plurality of spikes being made of a molded rubber material having a JIS-C hardness in the range from 35 to 95 and an elongation at break of 280% or more; said molded rubber material contains 30 wt % or more of polybutadlene as a rubber component thereof; the difference (h1âˆ’h2) between a projected height (h1) of said spike and a projected height (h2) of said projected portion is in the range from 2 mm to 8 mm; and a difference (C1âˆ’C2) between a hardness (C1) of the ground contact portion of the spike and a hardness (C2) of the projected portion of the outsole measured by JIS-C is in the range from 5-80.