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This invention relates toindustrial and like safety boots and particularly to incorporation therein of high impact resistant protective structure for the wearer's foot forwardly of the ankle.
The human foot in the instep or metatarsal region that extends forwardly from the ankle region to the bone structure at the inner ends of the toes is arched and contains a number of elongated bones extending side by side. This forward part ofthe foot is particularly vulnerable to impact and crushing forces, especially falling or dropped weights and puncture by sharp points or edges such as are encountered in industrial operations, and safety regulations have been established for protectionagainst such forces. For example current ANSI/OSHA specifications set goals for such protection.
It has long been known to incorporate relatively rigid impact resistant metal toe protectors in shoes and boots. It has further been proposed to include in addition to such toeprotectors instep guards.
The present invention provides in a boot or the like novel instep or metatarsal protection in the form of an incorporated relatively rigid guard of synthetic plastic wherein the material, shape and structure combine to prevent collapse even understringent crushing and impact conditions such as those set out in the above-mentioned ANSI standards, and this is the major object.