A caster board can include a front platform, a rear platform, and at least two neck sections extending between the front platform and the rear platform. The neck sections can serve as a torsion element allowing twisting of the front platform relative to the rear platform. An aperture between the neck sections can be configured to receive an insert. The insert can alter a structural characteristic of the caster board, such as the torsional stiffness of the caster board.

A wheel bearing having a cup, a cone and a washer. The cone is of a complementary shape to the cup and the washer abuts a surface of the cone. Each of the cup, the cone and the washer are made from a self-lubricating polymer.

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.

An electric skateboard with a hinge mechanism includes a first load plate, a second load plate, a hinge mechanism and an electric wire. A first wheel set is installed in the first load plate, and the first load plate includes a first accommodating space. A second wheel set is installed in the second load plate, and the second load plate includes a second accommodating space. A hinge mechanism includes a bridge base and two shaft sleeves pivotally connected at two sides of the bridge base. The bridge base and the two shaft sleeves together form a wiring slot. The two shaft sleeves are fixed to the first load plate and the second load plate respectively, so that the first load plate and the second load plate are foldable toward each other. The electric wire is inserted through the wiring slot.

An electric vehicle may include a board having two deck portions each configured to receive a foot of a rider, and a wheel assembly disposed between the deck portions. A motor assembly may drive the wheel assembly in response to board orientation and rider presence information. A rider detection mechanism may include one or more strain gauges, and may be configured to detect rider presence and rider weight information. A responsiveness of the motor may be automatically adjusted based on the rider weight information.

A detachable modular electric skateboard which comprises a board body, wheel frames arranged at the bottom of the board body and provided with wheels driven by external force to travel together with the board body and the wheel frames, a traveling suspension part detachably installed at the end of the board body, and a power supply control part arranged at the bottom of the board body and provided with a detachably-installed battery assembly, and further discloses a remote control device for controlling the electric skateboard. Through the detachable traveling suspension part and the power supply control part, the advantages of existing electric skateboards and ordinary skateboards are integrated, a user can achieve the function switching according to requirements, and the detachable modular electric skateboard can replace daily vehicles driven by manpower and perfectly shows the recreational significance of ordinary skateboards serving as sports equipment.

A truck for a skateboard utilizes spherical balls mounted for rotation beneath the deck of the skateboard such that the balls are freely rotatable in a direction along the longitudinal axis and are less rotatable in a direction transverse to the axis such that the skateboard exhibits behavior expected from a snowboard in snow.

A wheeled system for engagement with a surfboard is provided. Wheeled trucks are configured for removable engagement with a lower surface of a surfboard using mounting plates or recessed connections. The removable engagement of the trucks allow a rider to ride on support surfaces such as the sidewalk, and to remove the trucks to employ the surfboard in the water. The removable trucks may be retrofitted to existing surfboards with an elastic or mechanical engagement, or may be provided in combination with a surfboard.

The disclosed embodiments are directed to a transportation device, such as a skate. The transportation device may include a frame configured to support at least a portion of a user, and a support system configured to support the frame above the ground. The support system may include a first wheel connected to the frame, a second wheel connected to the frame, and a suspension system connected to the frame and positioned between the first and second wheel. The suspension system may include a rear wheel pivotally connected to a first portion of the frame, and a shock absorber connected between the rear wheel and a second portion of the frame. The shock absorber may be configured to dampen movement by the rear wheel with respect to the first portion of the frame.