A ski boot sole for cooperating with a ski binding to releasably hold the sole in the binding, the sole having a forward toe sole extending rearwardly from the front of the sole to a forward gap, a toe exterior insert in the forward gap which is located over a forward depression in the base of the ski...http://www.google.co.uk/patents/US7618053?utm_source=gb-gplus-sharePatent US7618053 - Ski boot sole, disengageable ski binding and ski boot base, and combination thereof
