{HEAD ~ Sports shoe} 1, wherein the drive gear rotates by 180° between the end positions of the actuator drive to effect {TAIL ~ a locking and releasing action} 
{ HEAD ~ Sports shoe } 1 , wherein the drive gear rotates by 180 ° between the end positions of the actuator drive to effect { TAIL ~ a locking and releasing action }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL