A multi-wheel truck that minimizes wheel interactions with discontinuous and uneven surfaces. The truck provides a suspension system that absorbs impact force caused by uneven surfaces and a unique attack angle that allows obstacles to be traversed when approached from a wide range of angles.

An upper through hole is formed in a support base, a lower end of the upper through hole being opened in an upper-side sliding contact surface of the support base, the upper through hole being configured to receive insertion of an upper portion of a pivot shaft; a lower through hole is formed in a rockable section, the lower through hole and the upper through hole being provided on the same axis, an upper end of the lower through hole being opened in contact with the upper-side sliding contact surface, the lower through hole being configured to receive insertion of a lower portion of the pivot shaft; an enlarged diameter hole section is provided in the lower through hole, the enlarged diameter hole section being configured to accommodate a needle bearing having a cylindrical shape, the needle bearing being fit to an outer side of at least a lower shaft portion of the pivot shaft; and the needle bearing having the cylindrical shape bears the lower shaft portion of the pivot shaft.

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.

A modular motorized wheel system is provided for replacing a conventional wheel of a conventional skateboard. The wheel is retained on the axle of the skateboard by an end nut removably attachable to the outside end of the axle. The system includes a motor shaft having an axial bore therethrough. The bore is sized to make the motor shaft concentrically and removably mountable on the axle. The motor shaft has an exterior end formed in an open cylindrical shape, the exterior end including an axially displaced shoulder sized to receive and abut the end nut, by which the motor shaft is secured on the axle. Other embodiments are provided.

A skateboard includes a deck, at least a front wheel set and a rear wheel set. The front wheel set, which is arranged at a bottom of the deck at a position close to a front end thereof, includes at least one rigid and rotatable front wheel frame and at least two front wheels. The rear wheel set, which is arranged at a bottom of the deck at a position close to the rear end thereof, includes at least one rigid and non-rotatable rear wheel frame and at least two rear wheels. The outer side of the wheel is circular or arc-shaped. The structure of the skateboard allows the user to change a center of gravity and to lift the sides of the board with foot, so as to only rely on the outer arc of the left or right front and rear wheels to slide, while the rotatable front wheel frame in the left or right side may still be utilized for rotating in the forward direction, which allows a skateboard experience of forward or changing the travelling direction.

The disclosure relates to a skateboard and control method thereof. A skateboard deck is fixed on an axle of the skateboard, and a first sensor group and a second sensor group are sequentially arranged on the skateboard deck in a width direction. The method includes acquiring a first pressure value of the first sensor group and a second pressure value of the second sensor group; controlling the skateboard to turn to a first direction when the first pressure value is greater than the second pressure value and a difference value between the first pressure value and the second pressure value is greater than a first threshold, and controlling the skateboard to turn to a second direction when the second pressure value is greater than the first pressure value and a difference value between the second pressure value and the first pressure value is greater than a second threshold.

A truck includes a base plate, a hanger, a kingpin, and a bushing assembly. The base plate includes a coupling portion and a contact portion. The kingpin is disposed within a portion of the hanger to rotatably couple the hanger to the base plate. The bushing assembly includes at least one bushing disposed in a recess of the contact portion and in contact with the hanger. The bushing assembly including a bushing adjustment coupled to at least one of the base plate or the hanger and configured to selectively engage the at least one bushing to transition the bushing assembly between a first configuration in which the at least one bushing exerts a first force in response to rotation of the hanger and a second configuration in which the at least one bushing exerts a second force different from the first force in response to rotation of the hanger.

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.

A modular skateboard assembly for enabling a user to employ a pair of skateboards in the convention of a skateboard or roller skates includes a pair of skateboards which each includes a pair of rollers that roll along a support surface. Each of the skateboards is attachable to the other skateboard such that the pair of skateboards extends along a common axis thereby facilitating the pair of skateboards to be employed in the common convention of skateboards. Furthermore, each of the skateboards is detachable from the other skateboard thereby enabling the pair of skateboards to be employed in the common convention of roller skates. Each of the skateboards includes a pair of foot restraints to restrain the user's feet.

A personal vehicle system including a control system and at least one wheel motor coupled to the personal vehicle system and subject to control by the control system. A control system for a personal vehicle system including steps for calibrating the control system, where the control system includes a sensor system having load sensors incorporated into the personal vehicle system and also having lean forward and lean backward outputs, a user interface that prompts a user to lean forward and backward and allows a user to input a sensitivity value, and an electronic hardware component for calculating a normalization value where the wheel motor current is controlled as a function of the normalization value.