Devices for fastening ski boots

A fastening device for a ski boot comprising a toggle for drawing two edges of said boot together and including a rack for fixing to a first edge of the boot and having at least one notch, a clamping lever integral with an engagement pin also constituting a pivot pin for the lever engaging in said notch of said rack, a traction member pivoted, on the one hand, to a second edge of the boot and, on the other hand, to the clamping lever, the latter being able to occupy a first position in which it is closed flat on the boot, a second stable intermediate walking position, or position of partial opening and a third position of complete opening in which the engagement pin is released from the notch, and an unlocking lever having a positive action, pivoted on the rack or clamping lever, and whose pivotal movement causes the removal of the engagement pin of the clamping lever from the notch of the rack in which this pin was housed.