A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

A roller board has axles provided with castors and secured at the front and rear ends of a board deck such that a steering movement is transferrable to the axles by a person on the board deck by lateral shifting of weight. Steerability and problem-free operation are improved. Substantially rigid booms, one directed to the front and one directed to the rear, are provided at the front and rear ends of the board deck, respectively. A support arm pointing in the direction of the central axis of the board deck is rigidly fastened to each boom. The support arms are pivotable on the two sides about a pivot axis inclined in the direction of travel by 40° to 50° relative to the plane of the board deck. The axle of a single castor is mounted rotatably in or on each hub, with the pivot joint inside the castor.

A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

A portable energy-saving and environment-friendly electric vehicle is light in weight, small in volume, convenient in electricity charging, and disassemble to be collected into a backpack for portability. The backpack is further furnished with a crank-handle generator to fulfill manpower electricity generation and working out simultaneously. This energy-saving and environment-friendly electric vehicle is mainly consisted of two adjustable skateboards and a support rod for adjusting speed and connecting a battery set. The battery set can be conveniently replaced roadside or domestically. In a situation of power out, manpower can be used to charge the battery set. Thus, the situation of power out to shut down the electric vehicle can be met. In addition, the battery set associated with the generator is reliable for charging mobile phones and computers.

The disclosed apparatus provides an enjoyable and safe way for a first rider and a second rider to ride tandem on a wheeled platform. The disclosed wheeled platform according to various embodiments may include a platform having a top surface and a bottom surface and a plurality of wheel assemblies coupled to the bottom surface. The wheeled platform may also include a first member and a second member for being grasped by the first rider and the second rider, respectively. The first member and the second member may each be coupled to the top surface of the platform and extend vertically therefrom.

In an aspect there is provided a swing scooter, comprising a frame, a steering member, a front wheel, at least two support legs, and at least two platforms. A rear wheel support is pivotally attached each support leg. A rear wheel is rotatably attached to each rear wheel support. Each platform is movably attached to an associated support leg, and positioned for supporting a foot of a user. Each platform has a longitudinal platform axis and is movable between a first position in which the platform is angled down laterally towards a first lateral side of the swing scooter, and a second position in which the platform is angled down laterally towards a second lateral side of the swing scooter. The platform is movable to the first and second positions by movement of the foot of the user.

A portable energy-saving and environment-friendly electric vehicle is light in weight, small in volume, convenient in electricity charging, and can be disassembled for portability in a backpack. The backpack is further furnished with a crank-handle generator to enable manpower electricity generation and working out simultaneously. This energy-saving and environment-friendly electric vehicle is mainly comprised of two adjustable skateboards and a support rod for adjusting speed and connecting a battery set. The battery set can be conveniently replaced roadside or at other locations. In a situation of power loss, manpower can be used to charge the battery set. Thus, the situation of power loss fully disabling the electric vehicle can be met. In addition, the battery set associated with the generator is reliable for charging mobile phones and computers.

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.

A trick scooter comprising a base plate, a support member, comprising a first end and a second end, a handle, comprising a first end and a second end, wherein the handle is attached to the second end of the support member. Furthermore, the base plate is manufactured of elastic and flexible material. Such a trick scooter is advantageous as it is lightweight, easy and safe to handle and does not damage the surroundings or cause injury to people nearby.

A personal transport vehicle is provided, which includes a front wheel assembly having a front rim and a front tire seated on the front rim, and a rear wheel assembly having a rear rim and a rear tire seated on the rear rim. The vehicle also includes a motor disposed within the rear rim of the rear wheel assembly and coupled to a mount of the rear rim, where the motor is configured to rotate the rear tire to cause movement of the personal transport vehicle. The vehicle further includes a frame coupled to the front wheel assembly and to the motor disposed within the rear wheel assembly, and a steering arm coupled to the front wheel assembly within the front rim for controlling movement of the front tire for steering the personal transport vehicle.