A ball comprising a first material having an elastic modulus of at least E=0.60 GPa, preferably at least E=0.70 GPa and more preferably at least E=0.73 GPa and/or a maximum elastic modulus of E=5 GPa, preferably at most E=3 GPa, more preferably at most E=1 GPa and even more preferably at most E=0.74 GPa, the first material defining at least an outermost section of the ball.

A ball comprising a first material having an elastic modulus of at least E=0.60 GPa, preferably at least E=0.70 GPa and more preferably at least E=0.73 GPa and/or a maximum elastic modulus of E=5 GPa, preferably at most E=3 GPa, more preferably at most E=1 GPa and even more preferably at most E=0.74 GPa, the first material defining at least an outermost section of the ball.

A kinetic section for a skating device comprising at least one ball and at least one roller, wherein the ball is adapted to be in contact with the roller at least at one point or contacting surface; and the ball is adapted to transfer an angular momentum to the roller; and a minimum coefficient of kinetic friction between the ball and a contacting surface of the roller is 0.16, preferably at least 0.20, more preferably at least 0.25, even more preferably at least 0.29 and/or the maximum coefficient of kinetic friction between the ball and the contacting surface of the roller is 0.50, preferably at most 0.40, preferably at most 0.45, more preferably at most 0.35, and even more preferably at most 0.31.

A kinetic section for a skating device comprising at least one ball and at least one roller, wherein the ball is adapted to be in contact with the roller at least at one point or contacting surface; and the ball is adapted to transfer an angular momentum to the roller; and a minimum coefficient of kinetic friction between the ball and a contacting surface of the roller is 0.16, preferably at least 0.20, more preferably at least 0.25, even more preferably at least 0.29 and/or the maximum coefficient of kinetic friction between the ball and the contacting surface of the roller is 0.50, preferably at most 0.40, preferably at most 0.45, more preferably at most 0.35, and even more preferably at most 0.31.

A chassis for a skating device comprising at least one retention element comprising at least one of a sliding surface, a barrel-shaped roller, an hourglass shaped roller, a cylinder shaped roller, a bearing ball, at least one ball and at least one turning element.

A chassis for a skating device comprising at least one retention element comprising at least one of a sliding surface, a barrel-shaped roller, an hourglass shaped roller, a cylinder shaped roller, a bearing ball, at least one ball and at least one turning element.

A skateboard device may include a frame, a set of wheels, and a deck. A user or rider may stand on the deck. The deck may be divided into a front panel and a rear panel, on which the user may rest a front foot and a rear foot, respectively. The rear panel may be fixed relative to the frame. The front panel, in turn, may pivot sideways relative to the frame and, in pivoting sideways, may drive a front wheel fork for rotation in order to steer one or more front wheels of the set of wheels left or right. In some embodiments, the skateboard device may include relatively wide, convex, single front and rear wheels facilitating riding the skateboard device not only on hard, flat surfaces but also on other terrains such as, but not limited to, dirt, gravel, etc.

A skateboard device may include a frame, a set of wheels, and a deck. A user or rider may stand on the deck. The deck may be divided into a front panel and a rear panel, on which the user may rest a front foot and a rear foot, respectively. The rear panel may be fixed relative to the frame. The front panel, in turn, may pivot sideways relative to the frame and, in pivoting sideways, may drive a front wheel fork for rotation in order to steer one or more front wheels of the set of wheels left or right. In some embodiments, the skateboard device may include relatively wide, convex, single front and rear wheels facilitating riding the skateboard device not only on hard, flat surfaces but also on other terrains such as, but not limited to, dirt, gravel, etc.

A multidirectional wheel system, apparatus, and method to control one or more multidirectional wheels to provide multidirectional motion or movement for a movable apparatus, such as a skateboard, roller blades, a car, a motorcycle, a cleaning robot, to which the one or more multidirectional wheels are attached. The multidirectional wheel system includes a braking system to slow and/or stop the movement of the multidirectional wheel(s). At least one of the multidirectional wheels is an omnidirectional wheel, with a plurality of multidirectional wheels acting thereon to control movement thereof. The multidirectional wheel system includes a drone, wherein the omnidirectional wheel operates based on instructions from the drone.