A skateboard system includes a first suspension member having first through third portions, each portion having a largest flat planar surface. The first portion includes a plurality of mount holes to mount it with a skateboard deck. The largest flat planar surface of the second portion is angled between fifteen and sixty degrees relative to the largest flat planar surface of the first portion and relative to the deck. The largest flat planar surface of the third portion is angled between fifteen and eighty degrees relative to the largest flat planar surface of the second portion. The third portion includes at least one opening to mount a truck assembly and/or a hanger with the third portion. The first suspension member flexes, such that an angle between the largest flat planar surface of the second portion and the deck decreases, in response to a first downward force on the deck.

A wearable device configured to selectively provide roller transportation, the wearable device including a shoe, a plurality of wheel assemblies, each wheel assembly being configured to selectively roll relative to a ground surface about an associated axis of rotation, and a frame connected between the wheel assemblies, the frame comprising a trunk and a plurality of branches extending from the trunk, each of the branches being configured for connection to at least one of the plurality of wheel assemblies, wherein at least a portion of the shoe is located vertically higher than at least a portion of the frame when at least one of the wheel assemblies is in contact with the ground surface and the at least one of the wheel assemblies is positioned to selectively roll relative to the ground surface.

A truck carrying member for coupling a conventional truck to a skateboard is described. The truck carrying member has comprises with a base plate rotatably coupled a pivoting plate at a pivot. The pivot comprises a bolt that provides an axis of rotation and a biasing member that keep that base plate and pivoting plate centered position. The base plate has a first mounting surface and a first pivoting surface that form a first obtuse angle. The pivot plate has a second mounting surface and a second pivoting surface that form a second obtuse angle that is less than the first obtuse angle. The second mounting surface extends downward from the skateboard when the truck carrying member is attached to a bottom surface of the skateboard. The pivot and biasing member help increase maneuverability of the skateboard by allowing the wheels of the truck to tuck in closer to the deck during turns.

A skateboard or longboard truck having configured to couple with a deck of the skateboard or longboard. The truck including a base and a hanger. The hanger disposed within a hanger aperture of the base. The hanger rotatably coupled with the base by a pivot assembly. The rotation of the hanger with respect to the base controlled by a compression assembly.

A skateboard and a variable-rate elastomeric steering control spring include a boardside unitary body formed of an exterior first elastomer having a first durometer on the Shore “A” scale, and an interior second elastomer coupled to the first elastomer and extending at least a length of the exterior first elastomer, the second elastomer having a second durometer on the Shore “A” scale and a through hole disposed to receive a kingpin of the skate truck; a roadside unitary body formed of an exterior third elastomer having a third durometer on the Shore “A” scale, and an interior fourth elastomer coupled to the third elastomer and extending at least a length of the exterior third elastomer, the interior fourth elastomer having a fourth durometer on the Shore “A” scale and a through hole disposed to receive the kingpin; and wherein the first, second, third and fourth elastomers comprise at least two durometers on the Shore “A” scale between 65A and 100A to enable the boardside unitary body and the roadside unitary body to form the variable-rate elastomeric steering control spring when disposed on the king pin of the skate truck.

The invention discloses a torque strengthening device for land surfboard adapters, comprising an upper connecting plate and a lower connecting plate, wherein a number of tension springs are connected between the upper connecting plate and the lower connecting plate; the upper connecting plate and the lower connecting plate are provided with the same number of evenly arranged spring connecting blocks on the side facing the tension springs; the number of the tension springs is twice the number of the spring connecting blocks on the upper connecting plate, and each of the spring connecting blocks is provided with two spring connecting holes; the spring connecting blocks of the upper connecting plate and the spring connecting blocks on the lower connecting plate are alternately arranged. The invention can replace tension springs with different torques to obtain different surfing feelings.

A suspension for a skateboard, comprising a pair of steering knuckles on opposite sides of a chassis frame of the skateboard, a pair of upper control arms connected between the pair of steering knuckles and the chassis frame, a pair of lower control arms connected between the pair of steering knuckles and the chassis frame, and a first spring damper connected between the pair of upper control arms.

A skateboard and a variable-rate elastomeric steering control spring include a boardside unitary body formed of an exterior first elastomer having a first durometer on the Shore “A” scale, and an interior second elastomer coupled to the first elastomer and extending at least a length of the exterior first elastomer, the second elastomer having a second durometer on the Shore “A” scale and a through hole disposed to receive the kingpin of the skate truck, the exterior first elastomer and the interior second elastomer configured with a first irregular anti-slip junction; a roadside unitary body formed of an exterior third elastomer having a third durometer on the Shore “A” scale, and an interior fourth elastomer coupled to the third elastomer and extending at least a length of the exterior third elastomer, the interior fourth elastomer having a fourth durometer on the Shore “A” scale and a through hole disposed to receive the kingpin; and wherein the first, second, third and fourth elastomers comprise at least two durometers on the Shore “A” scale between 65 A and 100 A to enable the boardside unitary body and the roadside unitary body to form the variable-rate elastomeric steering control spring when disposed on the king pin of the skate truck.

In an aspect, a foot-deck based vehicle is provided, comprising a foot-deck, a front wheel arrangement, a rear wheel arrangement and a biasing member. The foot-deck has a front end and a rear end. The front wheel arrangement is proximate the front end. The rear wheel arrangement is proximate the rear end. The foot-deck has a first foot-deck portion and a second foot-deck portion that is rearward of the first foot-deck portion and that is movable relative to the first foot-deck portion. The second foot-deck portion extends rearward of the rear wheel arrangement. The biasing member biases the second foot-deck portion towards a home position relative to the first foot-deck portion. The second foot-deck portion is moveable from the home position downward to a biased position so as to store potential energy in the biasing member such that the biasing member urges the first foot-deck portion upward.

An electric weight sensing skateboard using one or more strain gauge systems to detect rider-induced strain on one or both trucks, an inertial sensor to detect accelerations and balance position, and wheel speed sensors. Throttle is controlled by rider position, for example, lean forward to increase speed, lean back to slow down. Several drive methods include a driver position detection velocity setpoint control, torque setpoint control, and direct velocity/torque control. A throttle remote is note required. Rider weight activates the motors.