The drive unit includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, two juxtaposed tracks disposed around the housing along its longitudinal axis and enabling the drive unit to move when the tracks are rotatably driven around the housing, and at least one track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the corresponding track. The unit can also include a ventilation circuit for the interior of the inner chamber of the housing, and a generator for producing electricity. The drive unit can be manufactured from a single housing or with the housings of two apparatuses that are juxtaposed and rigidly paired.

The present invention relates to a tethering device for snowboard, comprising: a housing; a tether adapted to be accommodated in the housing, the tether having a first end connected to the housing, and a second end extendable away from the housing; an engaging means arranged at the second end of the tether, the engaging means having a receiving portion receivable at a guide portion of the housing; wherein the receiving portion is profiled to conform with the guide portion such that, the receiving portion, when arranged to be received at the guide portion, is positioned in a predefined orientation.

The drive unit includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, two juxtaposed tracks disposed around the housing along its longitudinal axis and enabling the drive unit to move when the tracks are rotatably driven around the housing, and at least one track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the corresponding track. The unit can also include a ventilation circuit for the interior of the inner chamber of the housing, and a generator for producing electricity. The drive unit can be manufactured from a single housing or with the housings of two apparatuses that are juxtaposed and rigidly paired.

The drive unit includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, two juxtaposed tracks disposed around the housing along its longitudinal axis and enabling the drive unit to move when the tracks are rotatably driven around the housing, and at least one track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the corresponding track. The unit can also include a ventilation circuit for the interior of the inner chamber of the housing, and a generator for producing electricity. The drive unit can be manufactured from a single housing or with the housings of two apparatuses that are juxtaposed and rigidly paired.

The drive unit includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, two juxtaposed tracks disposed around the housing along its longitudinal axis and enabling the drive unit to move when the tracks are rotatably driven around the housing, and at least one track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the corresponding track. The unit can also include a ventilation circuit for the interior of the inner chamber of the housing, and a generator for producing electricity. The drive unit can be manufactured from a single housing or with the housings of two apparatuses that are juxtaposed and rigidly paired.

The drive unit includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, two juxtaposed tracks disposed around the housing along its longitudinal axis and enabling the drive unit to move when the tracks are rotatably driven around the housing, and at least one track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the corresponding track. The unit can also include a ventilation circuit for the interior of the inner chamber of the housing, and a generator for producing electricity. The drive unit can be manufactured from a single housing or with the housings of two apparatuses that are juxtaposed and rigidly paired.

A skiing equipment (1) is provided, comprising two skis (3) each including a base body (31), a fastening group (32) for attaching (3d, 3e) to the base body (31); a track (4) closed around the base body (31); a mover (5) for the said track (4) around the base body (31); sensors configured to detect a movement of said ski (3) relative to said terrain (1a); and a control unit (6) for said mover (5) of each of said skis (3) and thus the sliding of said track (4) around said base body (31) based on said movement of said ski (3) relative to said terrain (1a).

Skiing equipment (1) is provided comprising a ski (2); a track (3) closed on itself and wound around the ski (2); a mover of the track (3) around the ski (2); a fastening group (4) for at least one binding (4a, 4b) defining together with the ski (2) a channel (4c) for the sliding of the track (3); and wherein the track (3) comprises a belt (31) wound longitudinally around the ski (2) and defining two ends (31a, 31b); and a hinge (32) constraining the ends (31a, 31b).

The invention relates to a winch system intended, in particular, for water sports, comprising at least one frame, at least one motor, a brake system, and a main tension cable wound around two spools, each spool being actuated by a motor such that when one of the spools unwinds the main cable, the other spool winds up the cable such as to maintain both the unwinding speed and the tension required for the main cable.

The invention relates to a winch system intended, in particular, for water sports, comprising at least one frame, at least one motor, a brake system, and a main tension cable wound around two spools, each spool being actuated by a motor such that when one of the spools unwinds the main cable, the other spool winds up the cable such as to maintain both the unwinding speed and the tension required for the main cable.