A sport board system is provided, the system having a sport board deck having a bottom surface, a front end and a rear end, a rear wheel assembly fixed to the bottom surface adjacent the rear end, and a fixation structure for a wheel assembly at the front end. The fixation structure has a notch passing through a thickness of the sport board deck, fixation rails parallel to a length of the sport board deck, and a locking mechanism at an end of the notch. Also provided is a method for transforming a sport board system from a skateboard configuration to a scooter configuration.

A system for analysis of the performance in use of a sliding board includes a database storing baseline performance; a sensor sensitive to the deformations of said sliding board; and a monitoring body. The monitoring body determines the performance in use based on measurements from the sensor; and compares the performance in use with the baseline performance. The sensor is secured to the sliding board and has at least one piezoelectric element secured to the sliding board and configured to generate electric energy during the deformations of the sliding board; and an electronic processing circuit, powered exclusively by the electric energy generated by the at least one piezoelectric element.

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.

A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

The present disclosure provides an approach to propelling an activity board. The approach involves, for example, a propulsion device comprising a driver transitionable between a first position and a second position, a motor operatively connected to the driver, and a power source operatively connected to the motor. The driver, when in the first position, is above a plane of an activity board and when in the second position, is below the plane of the activity board. A mount may apply a force to the driver. The approach also involves, for example, an activity board comprising a mount coupled to the activity board, a driver connected to the mount, the driver driven by a motor, and a power source operatively connected to the motor. The activity board comprises a top surface and a bottom surface configured to traverse a terrestrial surface. The driver is transitionable between a first position and a second position and, when in the first position, is located above the bottom surface, and, when in the second position, is located below the bottom surface. The approach further involves, for example, a method for propelling an activity board comprising transitioning a driver from a first position to a second position characterized by the driver engaging a terrestrial surface and actuating a motor operatively connected to the driver, the motor coupled to the activity board via a mount. The motor is powered by a power source mounted to the activity board.

A sports board apparatus includes a sports board and a sound module. The sports board includes a lower face for sliding and an upper face for supporting a user. The sound module is connected to the sports board, and includes a power supply and a circuit electrically connected to the power supply. The circuit comprises a vibration sensor, an audio controller electrically connected to the vibration sensor, and a speaker electrically connected to the audio controller. The audio controller actuates the speaker to provide sound like that from a vehicle in operation when the vibration sensor senses vibration.

Embodiments relate to a motorized skateboard. Embodiments allow users to utilize a power supply, such as a rechargeable battery pack, that is remote with respect to the skateboard. Embodiments can have the battery mounted on, under, partially or wholly enclosed within, and/or integral with the skateboard deck. Embodiments can have a removable and interchangeable motor mount, which attaches to the hanger to align the motor with the drive train. The drive wheel adaptor (hub) allows the user to modify standard skateboard wheels to use as drive wheels for the electric skateboard. The strength of the bond between the drive hub and the wheel enables the skateboard to utilize more torque without failure. Embodiments can allow users to have wiring connections at the front and/or back of the skateboard deck. Board-integrated wiring techniques can also be utilized. The electronics can be attached using brackets that fit the industry standard bolt pattern.

An apparatus for automatically adjusting tension on retention member to hold multiple objects together. Examples include using retention apparatus to obtain optimal fit and use of a human wearable item such as article of footwear. Sensors may be used to sense changes in movement of the article of footwear, of the person wearing it, or of a third object such as a vehicle carrying the person. A retention member may surround at least a portion of the objects, and an actuator may be included that automatically rotates a rotating member such as a gear or pulley that may be coupled to the retention member. The rotating member may be configured to automatically adjust tension on the retention member many times per second based on control signals from control logic responsive to the sensors.

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 vehicle assembly includes an axle comprising a channel extending along a central axis of the axle, a socket positioned within the channel of the axle, and a motorized wheel configured to be mounted on an end the axle. The motorized wheel includes a boss configured to engage the end of the axle when the motorized wheel is mounted on the axle, an electric motor, a tire mounted on the rotor, and a plug positioned within the boss, the plug configured to engage with the socket when the motorized wheel is mounted on the axle. The electric motor includes a stator fixed to the boss and a rotor surrounding the stator, the rotor configured to rotate relative to the stator. The electric motor is configured to cause the rotor to rotate relative to the stator to cause the tire to rotate.