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 trajectory of a user. The gait data is then used to provide motion command to an electric motor on the mobility device.

A motorized skateboard has a maneuverable rear truck. The riding platform on which the user stands includes a rotatable steering platform that the rider can step on with his rear foot. In the nominal position the steering platform extends slightly above the rest of the riding platform and is locked from rotating. When a user steps on the steering platform, the steering platform gets pushed downward against a spring. The downward movement causes a wedge to force apart two pawl level arms, thus disengaging respective pawls from a ratchet thereby unlocking the steering. In this position the steering platform is rotationally coupled to the rear truck through two spur gears acting in serial such that as the user pivots his foot clockwise, the rear truck turns counterclockwise, and vice versa. The result is a steering motion that is similar to turning a snowboard.

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 composite panel structure has opposing outer walls or surfaces and a core comprising a plurality of ribs extending between and connected to the outer walls and defining chambers which are filled with expanding foams, non-expanding foams, gases, or a combination thereof. The outer panel surfaces and internal chamber walls or ribs are made of woven or non-woven fibrous material impregnated with one or more resins. The panel structure may be used for making a variety of products including sports equipment such as sports paddles, surfboards, kite boards, skateboards, wakeboards, as well as construction panels for walls, ceilings or floors, display panels, panels for the vehicle industry, furniture, and other structures requiring high strength to weight properties.

A self-balancing board is provided, comprising a primary wheel assembly, a platform, at least one sensor, a controller, a first auxiliary wheel assembly, and a first brake element. The primary wheel assembly comprises a primary wheel and a motor driving the primary wheel. The platform is secured to the primary wheel assembly and has a foot deck. The at least one sensor senses the orientation of the platform. The controller receives data from the at least one sensor and controls the motor in response to the received data. The first auxiliary wheel assembly is secured to the platform distal the primary wheel assembly, and is elevated from contacting a flat surface upon which the primary wheel rests when the foot deck is parallel to the flat surface. The first brake element is manually movable relative to the first auxiliary wheel assembly to engage the first auxiliary wheel assembly to provide resistance to rotation of the first auxiliary wheel assembly.

A multi-link wheel base includes a main body composed of a plurality of links connected in series and wheels provided on the main body, and the wheels are provided on the link assembly the link assembly includes an intermediate link and an end link, wherein both sides of the intermediate link are provided with a rotational connection position, one side of the end link is provided with a rotational connection position, and the rotational connection positions on the adjacent link assemblies are rotationally connected by means of a connecting device.

A self-balancing vehicle includes a vehicle body having a housing with left and right sides which are independently moveable. A unitary support bar is disposed within the housing, and a left drive wheel and an opposed right drive wheel are each coupled to the support bar. A bracket encircles the support bar; the bracket has a cylindrical body formed with a slot through the body. A set screw is fixed to the support bar and is received within the slot to limit rotational movement of the support bar with respect to the bracket.

Viscous liquid rubber compositions are applied to articles by brushing, rolling, pouring, or dipping to repair leaks or to modify the appearance and/or physical properties of the article, such as water-permeability, thermal insulation, shock resistance, vibration resistance, electrical insulation, and the like.

The present invention relates to sports equipment, namely, to roller skates design enabling an athlete to achieve high speed of movement with better comfort and improved motion control, in particular, in case of movement on a lower quality road surfaces. Roller skates consist of two skates—right and left ones, each comprising a spatial rectangular frame with its upper surface adapted to be attached to a frame of the corresponding shoe, either left or right one, and its lower side having two pairs of rollers pivotally attached thereto such that the rollers may rotate being in contact with the roadway and the rollers' axes are parallel to the frame plane, and according to the invention each pair of front and rear rollers of each skate is pivotally attached to the corresponding Z-shaped wheel arm, either front or rear one, which has its central section pivotally attached to the corresponding smaller side of the spatial rectangular frame, and the distance between the axes of the inner rollers of a skate is greater than the distance between the axes of the external rollers. The present invention is aimed to provide such roller skates, which would be more reliable and safe due to increased stability of the skates during movement, also in case of lower quality road surface and during cornering. This objective is achieved by way of creating conditions for uniform distribution of the load arising from the weight of the athlete during movement among all four rollers of each skate, even when moving on a lower quality road surface.

An improved skateboard truck includes a baseplate, a hanger, and a kingpin assembly for securing the hanger to the baseplate. A first pivot surface is associated with the baseplate. A pivot plate is associated with the hanger. The pivot plate has an outer edge that defines a second pivot surface. The baseplate and the hanger are configured such that the second pivot surface engages the first pivot surface when the hanger is secured to the baseplate by the kingpin assembly. One of or both the first pivot surface and the second pivot surface has an arcuate profile that allows the baseplate to rock from side to side relative to the hanger.