Abstract: The steerable coupling linkage (106) is provided between a primary unit (100) and a secondary unit (102) arranged in tandem to form an articulated vehicle (104). The steerable coupling linkage (106) includes a steering actuator mechanism (200) having a transversally disposed actuator (202). The steerable coupling linkage (106) is particularly well adapted when the articulated vehicle (104) must travel on difficult and rugged terrains. It is very compact and lightweight, and the units (100, 102) can be attached or detached very quickly even when they are not in alignment with one another.

Abstract: 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.

Abstract: The compact pulling apparatus includes a watertight elongated housing extending along a longitudinal axis and a track disposed around the housing along its longitudinal axis. The track enables the apparatus to move when rotatably driven around the housing. Depending on the implementation, the apparatus can include a generator/motor to selectively produce electricity which can power external equipment and rotatably drive the track, and/or a fuel-power engine. The apparatus further includes a power train assembly by which the rotating output power is transmitted from inside to outside the housing by the power train assembly using at least one rotatable shaft section sealingly extending across a corresponding one of the walls of the housing.

Abstract: 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.

Abstract: 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.

Abstract: The compact pulling apparatus includes a watertight elongated housing extending along a longitudinal axis and a track disposed around the housing along its longitudinal axis. The track enables the apparatus to move when rotatably driven around the housing. Depending on the implementation, the apparatus can include a generator/motor to selectively produce electricity which can power external equipment and rotatably drive the track, and/or a fuel-power engine. The apparatus further includes a power train assembly by which the rotating output power is transmitted from inside to outside the housing by the power train assembly using at least one rotatable shaft section sealingly extending across a corresponding one of the walls of the housing.

Abstract: 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.

Abstract: The apparatus includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling the apparatus to move when the track is rotatably driven around the housing, and a track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the track. The apparatus can also include a ventilation circuit for ventilating the inner chamber of the housing and a generator for producing electricity. A method of operating a motorized pulling apparatus is also disclosed.

Abstract: The apparatus includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling the apparatus to move when the track is rotatably driven around the housing, and a track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the track. The apparatus can also include a ventilation circuit for ventilating the inner chamber of the housing and a generator for producing electricity. A method of operating a motorized pulling apparatus is also disclosed.

Abstract: The apparatus includes a watertight elongate housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling the apparatus to move when the track is rotatably driven around the housing, a handlebar connected to the housing and extending rearward, and a track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the track. The apparatus can also include a ventilation circuit for ventilating the inner chamber of the housing and a generator for producing electricity.

Abstract: The apparatus includes a watertight elongate housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling the apparatus to move when the track is rotatably driven around the housing, a handlebar connected to the housing and extending rearward, and a track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the track. The apparatus can also include a ventilation circuit for ventilating the inner chamber of the housing and a generator for producing electricity.

Abstract: The apparatus includes a watertight elongate housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling the apparatus to move when the track is rotatably driven around the housing, a handlebar connected to the housing and extending rearward, and a track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the track. The apparatus can also include a ventilation circuit for ventilating the inner chamber of the housing and a generator for producing electricity.

Abstract: The apparatus includes a watertight elongate housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling the apparatus to move when the track is rotatably driven around the housing, a handlebar connected to the housing and extending rearward, and a track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the track. The apparatus can also include a ventilation circuit for ventilating the inner chamber of the housing and a generator for producing electricity.

Abstract: A motorized hand truck has six wheels around an axle. An electric motor, through a worm drive, drives a gear box connected to the axle. The hand truck can be used horizontally to carry long objects. It could be used to carry stretchers for example. In fact, for heavy object, using it horizontally is safer for the user who is below the load and controls it from a low center of gravity.

Abstract: The present invention generally relates to a propulsion apparatus for imparting thrust to a person. The propulsion apparatus is configured so as to be disposed or mounted on the user such that the thrust is transmitted to the rear of the user's pelvic area. The propulsion apparatus may, for example, include a motor which is connected to a propeller for providing forward thrust. The propulsion, apparatus may, in particular, be used in association with skis for travelling over a snow covered surface; however, it may be used in association with other similar or analogous devices for travel over the same or other surfaces.