Abstract: The invention is a device for removably blocking a central-front part of a ski boot to a ski platform for actuating a Telemark technique. The boot sole (51) forms, at a bottom thereof, two lateral edges, internal and external (52A, 52B). A plate (1) is blockable to the ski platform, a blocking device (17, 18) constrained to the plate, which bear at least two ratchets. The ratchets are associated with the bottom of the boot supported by the plate, to corresponding edges of the internal edge (52A) and external edge (52B). An activator (16, 24) for the blocking device is supported by the plate, defining two configurations of the blocking device, respectively inoperative (11), with a disengagement of the ratchets from the corresponding edges (52A, 52B) and operative (12), with a blocking of the two edges against the plate (1).

Abstract: A heel piece for an alpine ski attachment comprises a base element (1), fastenable to a ski (S), an upper element (2), coupled to the base element (1), and a pair of rotatable arms for hooking to a shaped portion exhibited in a rear part of an alpine ski boot. A pair of pins (32) borne by the arms (31) project from the upper element (2). An elastic element (4) maintains the pins (32) at a predetermined reciprocal distance. The elastic element is stressed by a separation of the pair of pins (32), determined by a lowering of the ski boot onto the ski and by insertion between the pins (32) of the shaped portion. The pins (32), following complete insertion of the shaped portion between the pins, lock against an upper part of the shaped portion to hook the ski boot.

Abstract: A heel piece for an alpine ski attachment comprises a base element (1), fastenable to a ski (S), an upper element (2), coupled to the base element (1), and hooking means (3) borne by the upper element (2) for hooking to a shaped portion exhibited in a rear part of an alpine ski boot. The hooking means (3) comprise a pair of arms (31), constrained to the upper element (2) in such a way as to be rotatable with respect to the upper element (2), and a pair of pins (32) borne by the pair of arms (31) in such a way as to project from the upper element (2). The heel-piece further comprises elastic means (4) associated to the upper element (2) in such a way as to be in contact with the pins (32) and to maintain the pins (32) at a predetermined reciprocal distance. The elastic means (4) are stressable by a separation of the pair of pins (32), determined by a lowering of the rear part of the ski boot onto the ski and by insertion between the pins (32) of the shaped portion exhibited in said rear part.