A four-wheel sensor controlled vehicle having a base and a control box installed with a battery and a control panel; two driving wheels are installed at the bottom surface of the base close to the front edge of the base, and two universal wheels are installed at the bottom surface of the base close to the rear edge of the base. The driving wheel has a hub assembled with a hub motor assembly of a motor. The base is installed with four weighing sensors at four corners, the first weighing sensor and the third weighing sensor respectively correspond to the fore sole and rear sole of the left foot, the second weighing sensor and the fourth weighing sensor respectively correspond to the fore sole and the rear sole of the right foot. The control panel is connected with the motor and the weighing sensors.

A motor assembly for a transport vehicle (such as a skateboard) having at least one wheel for rotating about a shaft having an end distal to the wheel and an end proximal to the wheel, the motor assembly comprising a stator fixed to the shaft, and a motor bell surrounding the shaft at the location of the stator, wherein the motor bell comprises a first end being adapted to be attached to the wheel for transferring rotational movement of the motor bell to the wheel, and a second end surrounding the shaft at the location of the end distal to the wheel, wherein the second end of the motor bell is a free end permitting removal of the motor bell during removal of the wheel. The motor bell being adapted to permit airflow therethrough for cooling of the motor assembly.

Improved skateboards and methods of obtaining or providing skateboards with improved trucks. Trucks have two axles or axes, two primary wheels, and two secondary wheels, and skateboards have eight wheels, four in front and four at the rear portion of the skateboard. The four primary wheels support most or all of the weight of the skateboard when the skateboard is on a flat surface, and the two secondary wheels support the weight of one portion of the skateboard (e.g., front or rear) when the primary wheels cross a crack (e.g., a sidewalk contraction joint). In various embodiments, the secondary wheels are located outboard of the primary wheels. Further, in a number of embodiments, the axis of rotation or axle of the primary wheels remains parallel to that of the secondary wheels, whether the skateboard is going straight or turning.

An electric balance car comprises a left car body, a right car body, a rotation mechanism and wheels, wherein the left car body is connected to the right car body through the rotation mechanism, the wheels are mounted on the left car body and the right car body, the axes of axles of the wheels are lower than the axis of a rotary shaft in the rotation mechanism. The electric balance car can be controlled steadily and is ingenious in structure, easy to assemble and durable.

An apparatus for receiving one or more activity attachments including a deck having one or more openings along a long axis of the deck and between the top surface and the bottom surface of the deck. Each of the one or more openings having a circular aperture for receiving an accessory of a set of accessories. Each accessory of the set of accessories providing an activity for a user of the activity. Each accessory having an attachment platform configured to attach the accessory to the board. The attachment platform having a locking mechanism to engaging with a complementary locking mechanism of the board.

Novel side rails for self-stabilizing, one-wheeled electric skateboards and related products are disclosed. The angled frame rails of this invention and disclosure lower the center of gravity at the contact points—i.e. a rider's feet on the footpads—by as much as possible without losing any clearance at the front and rear bumpers, and tilt the gyroscope to change the zero-degree level default position. In order to achieve this, the inventive rails herein change to a downward tilt as soon as possible after the axle bolt connection points, then tilt back up before the footpad decks and continue through the front and rear of the vehicle. In one embodiment, a five-degree downward tilt of the rails allows for an approximately one-half inch drop in the center of gravity of the vehicle, thus increasing speed, stability, and safety.

Various implementations include a skateboard truck including a baseplate, a hanger, and a kingpin. The baseplate defines has a mounting surface. The hanger includes a main portion, a pivot pin, a first branch, and a second branch. The pivot pin is disposed within a pivot cup of the baseplate. The kingpin is disposed within openings in the baseplate and hanger. The branches each have curved longitudinal axes, a first portion coupled to the main portion, and a middle portion coupling the first and second portions. The second portion of each of the branches defines an axle opening. The first portion extends from the main portion toward the middle portion in a direction away from a mounting surface plane. The second portion extends from the middle portion in a direction toward the mounting surface plane. The first portions are closer to each other than the second portions are to each other.

Devices and methods of transport are disclosed. Various embodiments include structural aspects related to steering and changing the direction of conveyances including features which utilize leaning or shifting of weight as part of turning.

A moving wheel platform that minimizes wheel interactions with noncontinuous and uneven surfaces. The platform provides rotation-inhibiting structures onto or into the moving wheel platforms that aids with eliminating wheel bite.

A moving wheel platform that minimizes wheel interactions with noncontinuous and uneven surfaces. The platform provides rotation-inhibiting structures onto or into the moving wheel platforms that aids with eliminating wheel bite.