A foot rest assembly for a motorcycle, where the foot rest assembly has a main body extending along a main body axis from a first end to a second end, a mounting bracket attached to the first end of the main body, and a rotatable body rotatably supported on the foot rest assembly. The main body is configured to support a foot of a user when the foot rest assembly is mounted to a motorcycle. The rotatable body, which may be one or more wheels and/or rollers, is configured to rotate along the ground when the rotatable body contacts the ground as a result of motorcycle operation. The rotatable body is configured to rotate around a rotary axis, which may be obliquely angled relative to the main body axis.

A sail wheel includes a large wheel with a sail that is ridden on an outrigger attached to an axle of the large wheel. The outrigger includes a handle section and a foot stand section, allowing a user to ride and control the sail wheel. The sail wheel utilizes wind power for propulsion and is used on land for extreme sports or recreationally.

A sail wheel includes a large wheel with a sail that is ridden on an outrigger attached to an axle of the large wheel. The outrigger includes a handle section and a foot stand section, allowing a user to ride and control the sail wheel. The sail wheel utilizes wind power for propulsion and is used on land for extreme sports or recreationally.

A gerbilling-proof monowheel vehicle comprises: (a) a wheel felloe with a tire thereon; (b) a frame rotatably mounted within the wheel felloe; the frame carrying a passenger seat; (c) moving means configured for propelling the gerbilling-proof monowheel vehicle; and (d) braking means configured for decelerating the gerbilling-proof monowheel vehicle. The gerbilling-proof monowheel further comprises at least two auxiliary wheels side-mounted on the frame for vertically stabilizing the passenger seat and preventing the gerbilling-proof monowheel from side tipover and maintaining said passenger seat in a horizontal position within said wheel felloe.

A gerbilling-proof monowheel vehicle comprises: (a) a wheel felloe with a tire thereon; (b) a frame rotatably mounted within the wheel felloe; the frame carrying a passenger seat; (c) moving means configured for propelling the gerbilling-proof monowheel vehicle; and (d) braking means configured for decelerating the gerbilling-proof monowheel vehicle. The gerbilling-proof monowheel further comprises at least two auxiliary wheels side-mounted on the frame for vertically stabilizing the passenger seat and preventing the gerbilling-proof monowheel from side tipover and maintaining said passenger seat in a horizontal position within said wheel felloe.

To provide a frictional drive unit that can arrange drive rollers with high density and facilitate an attachment operation of the drive rollers, a frictional drive unit 2 includes a pair of drive disks 4, a plurality of drive rollers 5 rotatably supported by an outer circumferential portion of each drive disk, a pair of actuators 8 configured to independently rotate the pair of drive disks, and an annular main wheel 7 arranged between the pair of drive disks and coming into contact with the drive rollers. Each drive roller includes a roller shaft 41 and a round roller body 42 provided on an intermediate portion of the roller shaft. Each drive disk includes plural pairs of bearing grooves 45 each receiving both ends of the roller shaft of each drive roller. Each bearing grooves open toward the main wheel.

A balance board coupled to a two-wheeled vehicle to provide a moving platform that an operator of the vehicle can use to stabilize the vehicle. The balance board includes a coupling mechanism, a frame, one or more moving elements, and one or more foot support pedals. In one example, the balance board is mechanically passive such that the balance board maintains contact with the ground surface without an externally applied force (e.g., by the operator/user of the vehicle). In one aspect, the balance board may be rotatable about multiple rotational degrees of freedom to allow the balance board to steer as the vehicle turns.

A balance board coupled to a two-wheeled vehicle to provide a moving platform that an operator of the vehicle can use to stabilize the vehicle. The balance board includes a coupling mechanism, a frame, one or more moving elements, and one or more foot support pedals. In one example, the balance board is mechanically passive such that the balance board maintains contact with the ground surface without an externally applied force (e.g., by the operator/user of the vehicle). In one aspect, the balance board may be rotatable about multiple rotational degrees of freedom to allow the balance board to steer as the vehicle turns.

An auxiliary wheel system for a scooter includes an auxiliary wheel, an arm, an drive assembly, and an operation module. The arm has a first end fixed to the auxiliary wheel, and a second end pivotally fixed to a frame of the scooter via a joint attached at the second end. The drive assembly is configured to pivot the arm about the joint between a raised position and a lowered position with respect to the frame wherein the auxiliary wheel is vertically offset from a ground surface and in the lowered position. The operation module is configured to cause the arm to pivot about the joint between the raised position and the lowered position based on a tilt of the frame with respect to the ground surface exceeding a threshold value.

An auxiliary wheel system for a scooter includes an auxiliary wheel, an arm, an drive assembly, and an operation module. The arm has a first end fixed to the auxiliary wheel, and a second end pivotally fixed to a frame of the scooter via a joint attached at the second end. The drive assembly is configured to pivot the arm about the joint between a raised position and a lowered position with respect to the frame wherein the auxiliary wheel is vertically offset from a ground surface and in the lowered position. The operation module is configured to cause the arm to pivot about the joint between the raised position and the lowered position based on a tilt of the frame with respect to the ground surface exceeding a threshold value.