A shoe stud and receptacle combination for specifically oriented studs, the shoe stud (1) including a ground-engaging part (4). The stud (1) and receptacle (2) are adapted to be secured together by a multi-start threaded connection comprising a screw-threaded spigot (5) on one of the components adapted...http://www.google.es/patents/US7137213?utm_source=gb-gplus-sharePatente US7137213 - Studded footwear
