The present invention relates to a sole made from a first material, at least one receptacle made from a second material, and at least one stud, which can be releasably mounted within the receptacle by inserting a fastening projection of the stud into the receptacle. The fastening projection includes...http://www.google.fr/patents/US7047675?utm_source=gb-gplus-shareBrevet US7047675 - Detachable cleat system
