Patent attributes
A spike assembly is engaged with a recess in the outsole of a sport shoe and includes a base with a tubular portion and a plurality of protrusions extend from the base portion in axial direction of the base portion. Each protrusion includes an inclined side and a vertical side with a rounded portion connecting between the inclined side and the vertical side. A spike member includes screw portion which is securely connected to the tubular portion and an annular portion extends from the spike member, a plurality of blocks extend from the top of the annular potion which has a tapered outer periphery so as to seal the recess of the outsole of the sport shoe. The blocks slide along the inclined sides of the protrusions and then stopped by the vertical sides of the protrusions.
