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.

An energy absorption corner assembly for gate-opening sections and gates of dasher board assemblies for a playing zone having a playing zone comprising: an elongate core section comprising a polymer material having a first durometer; a sheet of the polymer material having a second durometer, wherein the second durometer is greater than the first durometer, wherein the sheet of the polymer material covers an entire surface of the elongate core section(s) facing the playing zone.

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.

An impact absorbing ski binding interface device includes an elongated top plate having a toe end and a heel end adapted to engage a boot toe and a boot heel, respectively, and a bottom plate adapted to engage a ski, thereby securing the device between the boot and ski. A plurality of constant force spring linkages between the top plate and the bottom plate include a constant force spring linkage between the toe end and the bottom plate, and a constant force spring linkage between the heel end and the bottom plate, such that each of the constant force spring linkages have an opposed pair of deformable members for exerting a counterforce to vertical displacement forces between the top plate and the bottom plate for load mitigation.

A support plate for a binding for a gliding board that includes the following: a chassis to be fixed on an upper surface of the gliding board; a damping plate intended to be at least partially interposed between a lower surface of the chassis and the upper surface of the gliding board. The support plate includes a wedge that is less compressible than the damping plate, movable between a hardness configuration, suitable for transmitting a vertical force from the chassis to the upper surface of a gliding board, and inhibiting, at least partially, the compression of the damping plate and between a flexibility configuration, suitable for the force to be retransmitted from the chassis to the upper surface of a gliding board, mainly via the damping plate.

A skateboard truck that is adjusted for different amounts of torsional stiffness. The axle of the truck is tensioned to change the torsional stiffness of the truck. The truck includes a fork shaped structural arm having tongs on the distal end. The ends of the tongs include mounting for the axle which supports the wheels. The tension in the axle determines the amount of torsional stiffness. Additionally, the distance between the wheels is adjustable to affect the torsional stiffness.

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 subject invention provides a snowboard that is propelled over the snow by a battery powered hub motor. The preferred embodiments include a pair of elastic arms mounted in the tails section of the snowboard, on which specialized snow paddles are fitted to a hub motor designed for various snow conditions. The paddle wheel attaches to the elastic arms through axle locking plates transferring the trust provided by the hub motor to the snowboard.

A skateboard comprising a board having an independent suspension and steering assembly connecting two wheels to the board. The suspension assembly comprises a support frame rotatably coupled to an underside of the board. The steering assembly comprises a steering crank fixed to and extending from an underside of the board. The suspension assembly further comprises for each wheel: a spindle for rotatably supporting the wheel; a knuckle for holding the spindle; an upper and a lower suspension arm pivotably coupled to the support frame at an upper and at a lower point of the support frame, respectively, and also pivotably coupled to the knuckle at an upper and at a lower point of the knuckle; and a spring for resiliently holding the knuckle against the board. The steering assembly further comprises for each wheel: a tie rod coupled by a ball joint to the steering crank and to the knuckle.

A ski may define a body that defines a tip, a tail opposite the tip, a top sheet, a base extending from the tip to the tail and opposite the top sheet, a core layer positioned between the base and the top sheet, and a reinforcement layer positioned between the top sheet and the base. The reinforcement layer defines an aperture extending through the reinforcement layer and positioned within a first third of a length of the ski, the length defined from the tip to the tail.