According to an aspect of some embodiments of the present invention there is provided a driving unit for an in-line skate system having roller wheels, the driving unit has a motor configured to generate a driving power, a transmission gear coupled to the motor, and a transmission belt interconnecting the transmission gear and the two or more roller wheels to transfer the driving power to the roller wheel. According to an aspect of some embodiments of the present invention there is provided an in-line skate system, comprising one or more in-line skates and a driving unit.

A system for control of a mobility device comprising a controller for analyzing data from at least one sensor on the mobility device, wherein the data is used to determine the gait of user. The gait data is then used to provide motion command to an electric motor on the mobility device.

A device for setting the orientation of a boot binding on a snowboard includes a disk fixable to the board, the binding being mounted to be able to rotate in relation to the disk about a vertical axis of rotation, at least one locking method mounted adjustably between a locked position where it immobilizes the binding in relation to the disk, and an unlocked position where it allows the rotation of the binding around the axis of rotation for an angular adjustment of the binding in relation to the board, the displacement of the locking method is ensured by an actuator, that is remotely controllable, and a locking method and an actuator that are installed in the disk so that: the actuator can be actuated when the boot is retained in the binding and, the locking method is movable by the actuator when the boot is retained in the binding.

A motorized or non-motorized multi-wheeled skateboard assembly including a board deck to support the user, a board having a top side, a bottom side, a flat and a rounded end, linkages, hinges, a steered wheel assembly, an input device and a drive assembly. The steered wheel assembly improves maneuverability, turn radius, and stability. The user steers the skateboard assembly by altering pressure between the top side first end and the top side second end causing the steered wheel to turn, thus manually steering the board. This change in pressure is also altered between the first linkage and second linkage in direct or inverse relation to altering pressure between the top side first end and the top side second end of the board deck.

A stowable motorized skateboard comprising a first board section, a second board section, a power supply section, and support bars. The first board section includes a locking mechanism and first support anchors. The second board section includes a controller, a motor, second support anchors, and power supply anchors. The power supply section is between the first and second board sections, encasing a battery electrically coupled to the controller and the motor, and including a catch receiving the locking mechanism. The power supply section further receives the power supply anchors. The support bars extend from the first board section to the second board section and receive the first support anchors and the second support anchors.

An electric skateboard includes a frame assembly has a deck with an opening of the deck to house a battery case mounted to a bottom of the deck. The frame has a top plate that covers the opening and forms with the battery case an enclosure. A battery pack is positioned at least partially in the enclosure. Front and a rear truck are mounted to the bottom of the deck. At least one of the first and front and rear trunks are coupled to first and second wheels mounted on axles of the front and rear trucks. The front truck is mounted on the front end and a rear truck mounted on a rear end of the deck. Upper and lower control arms share a single shaft.

Disclosed is a rotation mechanism (4) for an electric balance car. The rotation mechanism connects a left car body and a right car body of the electric balance car, and comprises a rotary shaft (40), a sleeve ring (41) and a bearing (42), wherein the sleeve ring (41) is fixedly connected to one side of the rotary shaft (40), the bearing (42) is sheathed on the other side of the rotary shaft (40), and a limiting part (411) is protruded outwardly at a position of an outer edge of the sleeve ring (41). Also disclosed is an electric balance car, comprising the rotation mechanism (4). The rotation mechanism of the electric balance car has a firm and reliable structure, operates smoothly, is convenient to install, and is durable.

An electrical balance car comprises pedals. Each pedal has a convex part located on the edge, and a concave part located in the middle and used to restore the pedal after the pedal descends under the effect of acting force. The electrical balance car can be controlled steadily and is ingenious in structure, easy to assemble and durable.

A method and system for use in the game of football to determine ball placement and position, as well as first down demarcations, is described, with various embodiments configured to track the location of a football to determine its position on the field and to determine and display the first down demarcation on the field. Certain embodiments employ software to assist in performing placement determinations, distance determinations, track movement of the ball, first down markers, as well as light emitting modules along a track that extends parallel to the field.

An electric weight sensing skateboard using one or more strain gauge systems to detect rider-induced strain on one or both trucks, an inertial sensor to detect accelerations and balance position, and wheel speed sensors. Throttle is controlled by rider position, for example, lean forward to increase speed, lean back to slow down. Several drive methods include a driver position detection velocity setpoint control, torque setpoint control, and direct velocity/torque control. A throttle remote is note required. Rider weight activates the motors.