To provide a traction member capable of being easily attached and detached without the need of a special tool for attachment and detachment, easily arranging the traction member to an optional desired tread pattern and obtaining the action of guaranteeing falling prevention by stamping in the attachable and detachable traction member like a spike provided on footwear for sports.
This traction member 30 detachably screwed to a screw hole 16 provided with a screw inner diameter 26 and a screw outer diameter 28 provided on a footwear is provided with a head 32 provided with at least one ground engaging projection 36 projected from an outer surface so as be to gnawed into the ground. A shaft 34 is projected from the head and fins 42 are projected from the shaft in a direction perpendicular to the axis. The shaft is non-rotationally inserted into the hole 16 by bending and deforming the fins and thus, the fins engaged inside a screw groove 24 fix the traction member 30 inside the hole at the time of being completely inserted. Thus, the traction member 30 which starts falling for some reasons is returned to a prescribed position just by stamping.
SCHWARTZ JOHN H (US)
CONWAY ANDREW W (US)
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