US Patent 7367572 Skateboard

A skateboard in accordance includes a footplate (1) having a lower surface, a front wheel and a rear wheel (3) arranged in a front end and a rear end of the lower surface respectively, wherein the wheels are universal, and the footplate includes a front plate (17) and a rear plate (18). The front plate and the rear plate are connected via a rotatable torsional mechanism, and a restriction element (4) is defined between each plate and the torsional mechanism for restricting the rotation range of the torsional mechanism.