Structure, associated with a motorcycle boot, which is designed to restrict, in the event of accidental falls followed by contact at high speed with the ground, the movements of the leg-piece (12) of the boot with respect to the axis of a heel-piece (14). First hinge (16) which are angularly movable...http://www.google.co.uk/patents/US6725577?utm_source=gb-gplus-sharePatent US6725577 - Structure for limiting movements of the leg-piece of a motorcycle boot
