A transportation robot may comprise a base attached to a carriage. The base comprises a motor-assisted vehicle for transporting a first payload. The base automatically performs self-balancing functions during operation and rotates around a base axis of rotation. The carriage unit comprises a mechanical extension that is attached to the base for transporting a second payload that is different than the first payload. The carriage rotates around a carriage axis of rotation. The carriage includes a set of carriage connections configured to attach the carriage to the base so that the carriage axis of rotation is substantially collinear with the base axis of rotation. A carriage connection may include supplementary elements that enable the robot to operate properly in both first and second states (user is on or off the base) without requiring re-configuration of the carriage connection. The supplementary elements may include a resistance element and/or a damping element.

A wheeled personal mobility device for transporting a person, an electric motor for use with the personal mobility device, a splined connection, an electromagnetic braking system and a steering engagement mechanism. The wheeled personal mobility device may be embodied as a wheeled personal mobility aid. The wheeled personal mobility device is reconfigurable between at least three configurations.

A mobility device includes a sidecar and a tilting vehicle including a two-wheeled bicycle, and may further include: an articulated link member including multiple link arms configured to link a vehicle body of the tilting vehicle and a body of the sidecar. In particular, linkage movements of the respective multiple link arms provide upward and downward movements, and leftward and rightward tiltings of the sidecar when a center of gravity of the vehicle body moves leftward and rightward.

A mobility device includes a sidecar and a tilting vehicle including a two-wheeled bicycle, and may further include: an articulated link member including multiple link arms configured to link a vehicle body of the tilting vehicle and a body of the sidecar. In particular, linkage movements of the respective multiple link arms provide upward and downward movements, and leftward and rightward tiltings of the sidecar when a center of gravity of the vehicle body moves leftward and rightward.

A universal electric vehicle frame configured to be exchangeably coupled to a plurality of different types of sets of wheel assemblies to selectively form a plurality of different types of electric vehicles including an electric scooter, an electric skateboard, and an electric bicycle. The universal electric vehicle frame includes an encasement for housing one or more batteries to power the electric vehicles. At least one of the wheel assemblies includes an electric motor powered by the batteries, and configured to turn a wheel of the wheel assemblies.

A universal electric vehicle frame configured to be exchangeably coupled to a plurality of different types of sets of wheel assemblies to selectively form a plurality of different types of electric vehicles including an electric scooter, an electric skateboard, and an electric bicycle. The universal electric vehicle frame includes an encasement for housing one or more batteries to power the electric vehicles. At least one of the wheel assemblies includes an electric motor powered by the batteries, and configured to turn a wheel of the wheel assemblies.

An electric scooter includes a deck, a power wheel unit, a power wheel steering unit, a driven wheel, a driven wheel steering unit, a power supply unit and a whole scooter controller. The power wheel unit includes a driving wheel; the power wheel steering unit is arranged between the deck and the power wheel unit; the driven wheel is spaced apart from the power wheel unit; the driven wheel steering unit is arranged between the driven wheel and the deck; the power supply unit is electrically coupled to the power wheel unit; the whole scooter controller is in communication with the power wheel unit and controls rotation of the driving wheel.

A go-cart frame and a tricycle frame that can be attached to an engine frame. Both the go-cart frame and tricycle frame have a mounting bracket that attaches to a bracket on the engine frame. The engine frame has an engine mount, a transmission system and two wheels. The go-cart frame has two wheels in the front, a front steering systems, a body with a seat and throttle and brake controls. The tricycle frame has a single front wheel, a steering system, a seat and throttle and brake controls. To convert one device to the other, the user simply unbolts the engine frame from the other frame (supporting it as needed), disconnects the control cables, moves the originally connected piece, moves the other piece into position, and then bolts this new piece to the engine frame and reconnects the controls. Then, the new configuration is ready to use.

A go-cart frame and a tricycle frame that can be attached to an engine frame. Both the go-cart frame and tricycle frame have a mounting bracket that attaches to a bracket on the engine frame. The engine frame has an engine mount, a transmission system and two wheels. The go-cart frame has two wheels in the front, a front steering systems, a body with a seat and throttle and brake controls. The tricycle frame has a single front wheel, a steering system, a seat and throttle and brake controls. To convert one device to the other, the user simply unbolts the engine frame from the other frame (supporting it as needed), disconnects the control cables, moves the originally connected piece, moves the other piece into position, and then bolts this new piece to the engine frame and reconnects the controls. Then, the new configuration is ready to use.

A scooter includes a scooter body with substantially triangular front and rear body portions. The substantially triangular front body portion has a front side and a first connecting side. The front side and the first connecting side of the front body portion form a first acute angle. The substantially triangular rear body portion has a rear side and a second connecting side. The rear side and the second connecting side of the rear body portion form a second acute angle. The first and the second connecting sides are connected so as to linearly slide with respect to one another such that when the scooter body is in an extended state the front side is in a greater distance from the rear side than a distance when the scooter body is in a compact state.