The closure device comprises a box-like body associated with one of the ski boot flaps to be brought together and provided with a knob for actuating a spool whereon at least one small cable associated with the other of the flaps to be brought together is wound. Also provided is a ratchet gear mechanism...http://www.google.de/patents/US4433456?utm_source=gb-gplus-sharePatent US4433456 - Closure device particularly for ski boots