A parkour wheeled boot for increasing moving speed, having self-balancing function, wearable on a respective leg of a user. Each boot has a wearing mechanism, a shock reduction mechanism, a drive mechanism, a motion transmission mechanism, a power mechanism and a control mechanism. The wearable mechanism has a pedal, a pedal fixation rack, calf supporting plates, and magnetic pieces or belt and buckle. The shock reduction mechanism has a spring seat, springs and a cover. The drive mechanism has a motor having a hollowed center, and also an inner wall of a bearing. The motion transmission mechanism has an outer wall of the bearing, a wheel hub, and a rubber tire. The power mechanism has batteries, battery smart protection control board, ports and connection wires. The control mechanism is a single board unit with microprocessor, angular speed sensor, acceleration sensor, pressure sensor and relevant electronic components.

A wearable device configured to selectively provide roller transportation, the wearable device including a shoe, a plurality of wheel assemblies, each wheel assembly being configured to selectively roll relative to a ground surface about an associated axis of rotation, and a frame connected between the wheel assemblies, the frame comprising a trunk and a plurality of branches extending from the trunk, each of the branches being configured for connection to at least one of the plurality of wheel assemblies, wherein at least a portion of the shoe is located vertically higher than at least a portion of the frame when at least one of the wheel assemblies is in contact with the ground surface and the at least one of the wheel assemblies is positioned to selectively roll relative to the ground surface.

A compression board apparatus of a generally planar surface has an insert that compresses to a position that is flat or flush with a top surface of the board, when a load is applied to the top surface of the board. When the load is removed, the insert releases, thereby expanding to a released position. The insert is arranged to both extend above the top surface of the board and extend below a bottom surface of the board. The insert may be secured by at least locking mechanism and enables a user who applies a load to the top surface of the board to maintain contact with the board's surface, even in an airborne position and when the board is in a non-planar position.

A skateboard truck assembly comprising a base plate, a hanger, and at least one compressible member interposed there between that utilizes rotation of the hanger to at least partially and temporarily deform the compressible member, thereby creating zones of tension and/or compression within the compressible member and facilitating smooth and efficient motion of the skateboard.

A shock absorber system according to the present invention is connectable to a shaft (16) supporting a roller ski wheel (13), wherein a circular shaped rubber or rubber like material (10) is arranged around a centered position (11) of a wheel support (14) supporting an end part of the shaft (16) supporting the roller ski wheel (13).

A self-propelled, one-wheeled vehicle may include a suspension system configured to dampen up and down motion of a board relative to the axle of a central wheel assembly when the vehicle encounters obstacles and bumps on a riding surface. Illustrative suspension systems include a shock absorber, a rocker, a pushrod, bell cranks, and/or a swingarm that couple the axle to the board. The suspension system may be disposed completely below a foot deck of the vehicle.

An electronic control device for an electric skateboard that obviates the need for remote control is described. The device includes one or more hub motor integrated into a wheel hub or coupled to an axle of the electric skateboard and electric control unit that detects speed or acceleration of the hub motor and adaptively controls speed or torque of the hub motor based on feedback from rider's manual operation of the skateboard.

Various powered mobility systems for users are described. The powered mobility system can include at least one powered skate. The powered skate can include a platform, a plurality of wheels, and a motor assembly. The motor assembly can include a motor. The motor can be powered by a power supply. A motor control can be implemented to determine when power is supplied to the motor from the power supply.

A self-propelled, one-wheeled vehicle may include a suspension system configured to dampen up and down motion of a board relative to the axle of a central wheel assembly when the vehicle encounters obstacles and bumps on a riding surface. Illustrative suspension systems include a shock absorber, a rocker, a pushrod, bell cranks, and/or a swingarm that couple the axle to the board. The suspension system may be disposed completely below a foot deck of the vehicle.

A suspension system for skateboards that provides a low profile, high strength suspension system to support a typical roller skate which incorporates one independent and/or offset style suspension and one offset style suspension which includes a flat plate next to a cover with apertures; two support posts secured and configured perpendicularly to the flat plate, where each post has either a drive stud at one end and an aperture and bearing at an opposite end to the flat plate and drive stud; a torsion arm with a socket to connect to the drive stud; and a hub base that encircles the torsion arm opposite the socket which secures the hub base to the torsion arm while the hub base is removably secured to a stub shaft; a way to attach the flat plate and a second way for removably connecting the cover to the skate base plate.