An apparatus comprising a platform; a plurality of trucks coupled to the platform; and a roller assembly coupled to the platform, wherein the roller assembly is configured for an omnidirectional rotation, wherein the roller assembly is configured for an elastic biasing, wherein the roller assembly is driven by a motor.

A method, system and apparatus for carrying a user including a board for supporting the user, a plurality of ground-contacting members coupled with the board, a motorized drive assembly coupled with the ground-contacting members and one or more sensors coupled with the drive assembly. In operation, the drive assembly adjusts the velocity of the ground-contacting member based on one or more distances of the board from a surface below the board as detected by the sensors.

An electric skateboard with a hinge mechanism includes a first load plate, a second load plate, a hinge mechanism and an electric wire. A first wheel set is installed in the first load plate, and the first load plate includes a first accommodating space. A second wheel set is installed in the second load plate, and the second load plate includes a second accommodating space. A hinge mechanism includes a bridge base and two shaft sleeves pivotally connected at two sides of the bridge base. The bridge base and the two shaft sleeves together form a wiring slot. The two shaft sleeves are fixed to the first load plate and the second load plate respectively, so that the first load plate and the second load plate are foldable toward each other. The electric wire is inserted through the wiring slot.

A module for the construction of a recreational track, particularly a bicycle track having a frame on which the modules are placed, wherein the module has an upper part intended for riding and making a curved surface, and in the top view it has a quadri- lateral-like shape with two sides in the shape of arches, a rear wall and a front wall, wherein the rear wall and the front wall form the base of the module, as well as the left face wall and the opposite right face wall, which are placed between the rear wall and the front wall, characterized in that in the side view, the rear wall has the quadrilateral shape, the sides of which converge upwards at an acute angle, and in the side view the front wall has the shape of an arc connecting the upper part with the base of the module.

A modular connector system for facilitating the construction of a playing area or non-playing area, such as an outdoor or backyard ice hockey or skating rink, a netted or lighted area, sand box, garden, and the like. Spanning boards and/or inserted poles can be used to join side connectors to corner connectors and to side connectors to form a free standing, fully enclosed, partially enclosed, walled-in, netted, or partitioned area.

A human transportation device in the form of a variable length skateboard. The variable length skateboard provides a short embodiment allowing the rider greater handling and stopping ability and a long embodiment providing the rider with increased speed ability. The long and short embodiments can quickly and easily be transitioned between at any time or place by the insertion or extraction of at least one removable center deck section. The deck sections are coupled using thumb screw type fasteners and coupler plates thereby removing a need for tools to make the conversion between embodiments. The variable length skateboard provides its owner with multiple embodiments without having to purchase multiple skateboards.

A detachable snowboard and snowboard pole with a collapsible shaft divided into segments, a basket tip, and a handle. In exemplary embodiments, the pole affixes to a planar top surface of the snowboard using a mounting system comprising a plurality of clamps at staggered attachment points, each clamp adapted to form a friction fit with segments of the snowboard pole, each clamp oriented in parallel with one another.

Sliding board (1), whose internal structure has a core (2) edged with side ski edges (10), said core (2) separating two lower (3) and upper (4) reinforcing layers, in which core (2) includes at least additional component (20) made of material with greater flexibility than the remainder of the core, characterised in that said additional component is inserted into a slender hollow (21, 22) shaped to curve inside the core.

A collapsible mobile stage may be folded into a configuration and the shape of a trailer that may be hauled by a truck. The collapsible mobile stage includes an elevated framework supported by telescoping columns. The elevated framework may be used to support lighting, audio and visual systems. The mobile stage also provides seating for an audience on either side of a central stage supported by a platform. The platform includes a central segment between two opposing lateral segments. The lateral segments may be folded up to form the sides of a trailer while the central segment forms the bottom of the trailer. Audience seating sections may be folded over the platform segments to create the roof of the trailer. Audience seating as well as the elevated framework may be stored within the trailer or within a secondary trailer.

A collapsible ski device, having: a first forward ski member having a bottom surface, a tip and a rear end; a second middle ski member having a bottom surface, a forward end and a rear end; and a third rear ski member having a bottom surface, a forward end and a tail. The forward end of the second middle ski member is pivotably coupled to the rear end of the first forward ski member by a first hinge mechanism. The first hinge mechanism has a flexible component attached at a first location to a first attachment surface on the first forward ski member and attached at a second location to a second attachment surface on the second middle ski member. The rear end of the second middle ski member is pivotably coupled to the forward end of the third rear ski member by a second hinge mechanism. The second hinge mechanism has a flexible component attached at a first location to a third attachment surface on the second middle ski member and attached at a second location to a fourth attachment surface on the third rear ski member.