Abstract: A spike assembly for sport shoes includes a base with a tubular portion. A plurality of protrusions extends from the base portion in an 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 a screw portion which is securely connected to the tubular portion, and a plurality of blocks extends from the spike member. Each block includes a curved protrusion facing the screw portion. The screw portion is connected to the tubular portion, and the curved protrusions are guided along the inclined sides of the protrusions and then, are stopped by the vertical sides of the protrusions. The spike member does not become loose by the weight of the wearer.

Abstract: 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.

Abstract: 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.

Abstract: A spike assembly for sport shoes 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 a plurality of blocks extend from the spike member. Each block includes a curved protrusion facing the screw portion. The screw portion is connected to the tubular portion and the curved protrusions are guided along the inclined sides of the protrusions and then stopped by the vertical sides of the protrusions. The spike member does not loose by the weight of the wearer.

Abstract: A digital network video and audio monitoring system includes a real time digital video and audio processing unit, a fast Ethernet switching unit and a self-protecting and alarming unit. The real time digital video and audio processing unit has multiple audio and video processing modules each made of an interface card and connected to a video and audio monitor. The fast Ethernet switching unit is connected to the real time digital video and audio processing unit and further connected to TCP/IP network. Therefore, monitoring signals from the video and audio monitor can be sent to the network. Further, the self-protecting and alarming unit is connected between an external AC power source and outputs of the video and audio monitors to detect whether any abnormal signals occur. The present invention can directly connect to one or more video and audio monitors and send the monitoring signals over the network.