Abstract: The control column is attached around a transverse axle on the upper of a shoe, preferably a sports shoe having a high upper. The axle pivoting in the control column has a cam pivoting in the upper. Complementary elements held by the control column and the upper cooperate to lock in position the control column in relation to the upper in a determined position of the cam and the opposite to free the control column to rotate to a position opposite the cam. The cam, axle ensemble can be manually rotated by the wearer of the shoe. Several successive locking positions allow a progressive adjustment of the control column for optimal support of the lower leg of the wearer of the shoe.

Abstract: A rear-entry ski boot whose rear piece (3) is provided with a flexibly connected guide device (15) constituting a tightening and closing system (8) which is always well positioned for gripping by the skier.

Abstract: Ski boot with a device for transmitting flexion forces of the boot upper to the shell base, comprising a slide (8) movable in a transverse groove (7) at the lower forward edge of the cuff (5). The slide is adjustable through the intermediary of a push element (10) which causes displacement of a lock (12) in a rotational movement about an axis (30) perpendicular to the direction of displacement of the push element.

Abstract: Rigid shell ski boot (1) comprising a quick-tightening, quick-release foot-retaining system operable by means of a lever (9) that is angularly pivotable about an axis of articulation (15) into two extreme positions that correspond to tightening and release, respectively. The lever (9) controls an assembly composed of a threaded sleeve (6) and a nut (7) joined to an element (8) for support of a skier's foot through a movable cam (10) that forms part of the lever (9). The relative position of the cam (10), which is a function of the angular position of the lever (9), determines the position of the sleeve-nut (6, 7) assembly and either grips or release the foot.