A sport board or freestyle skateboard which may include at least a central aluminum honeycomb portion between layers of carbon nanotube fiber, fiberglass cloth, and covered with a soft outer layer.

This locomotion device includes a mechanism suitable for converting the pivoting of a roller into a movement of a pad to an advanced position in which it brakes this roller, this mechanism includes a planetary gear set having: a planetary wheel attached to a sole and the axis of revolution of which coincides with a pivoting axis of the roller and a satellite gear rotated by the planetary wheel about an axis of revolution attached without any degree of freedom to the roller and a pin movable by the satellite gear between: a near position in which it pushes and maintains the pad in an advanced position and a distant position in which it allows the movement of the pad from its advanced position to a retracted position.

A braking mechanism of a wheeled device is provided, including: a main body, configured to be connected to the wheeled device including at least one wheel; an adjusting member, disposed on the main body and including a rod and a first abutting member adjustably positioned on the rod; a braking member, movably disposed on the main body; and an elastic member, abutted between the first abutting member and the braking member so that the braking member is biased by the force of the elastic member toward the at least one wheel to frictionally contact the at least one wheel.

Provided is a ball skate sole structure which can be customized for each individual or each sport. This ball skate sole structure includes: a base plate having a plurality of first holes and a plurality of second holes; at least one ball roller member, the at least one ball roller member being disposed in the first hole selected from among the plurality of first holes; and at least one brake member, the at least one brake member being disposed in the second hole selected from among the plurality of second holes.

Provided is a ball skate sole structure which can be customized for each individual or each sport. This ball skate sole structure includes: a base plate having a plurality of first holes and a plurality of second holes; at least one ball roller member, the at least one ball roller member being disposed in the first hole selected from among the plurality of first holes; and at least one brake member, the at least one brake member being disposed in the second hole selected from among the plurality of second holes.

A bottom structure of a roller skate includes a sole; a frame secured to the sole and including front and rear supports and two hubs disposed on the front and rear supports respectively; a pivotal member disposed in the hub; two spaced sleeves disposed in the hub wherein the sleeves are further partially disposed in the pivotal member and secured to the pivotal member; a shaft passing through the hub, the pivotal member, and a gap between the sleeves, and rigidly secured to the pivotal member; and two enlargements disposed at two ends of the shaft respectively.

A bottom structure of a roller skate includes a sole; a frame secured to the sole and including front and rear supports and two hubs disposed on the front and rear supports respectively; a pivotal member disposed in the hub; two spaced sleeves disposed in the hub wherein the sleeves are further partially disposed in the pivotal member and secured to the pivotal member; a shaft passing through the hub, the pivotal member, and a gap between the sleeves, and rigidly secured to the pivotal member; and two enlargements disposed at two ends of the shaft respectively.

A ground-engaging device that is capable of sustained rolling, stable braking, secure standing, and walking. In one preferred embodiment, the invention relates to a wheeled footwear device. In another preferred embodiment, the invention relates to a wheeled footwear platform. In yet another preferred embodiment, the invention relates to a wheeled artificial foot.

The present disclosure relates to a beginner's inline skate which can prevent rolling in place. A beginner's inline skate with an anti-rolling device according to the present disclosure includes an anti-rolling device installed on at least one wheel of wheels of the inline skate, wherein the anti-rolling device includes: an anti-rotation catching step formed around a rotating shaft of the wheel; and a rotator installed to rotate about a circumference of the rotating shaft of the wheel and having catching protrusions formed to be caught at the anti-rotation catching step and lock rotation of the wheel.

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.