Patent ID: 7367569

Claim:
A roll sliding device comprising a frame, wheels mounted thereon and a shoe for the user's foot, whereby the shoe is pivotably mounted on the frame in relation to a pivoting axle placed in parallel with the axles of the wheels, and a driving arrangement is provided between the shoe and at least one wheel that is arranged to rotate said wheel with the user's forward turning foot movement around the pivoting axle, wherein the driving arrangement comprises a planetary gear system, which at the primary side thereof is connected to the shoe and to the rotatable wheel at the secondary side the primary side of the planetary gear system is composed of an outer casing provided at the inner circumference thereof with a sunwheel tooth rim and at the outer side thereof with means for providing a connection with the shoe, and the secondary side of the planetary gear system comprises a centrally positioned power wheel used by planetary wheels, an output axle connected thereto, a freewheel bearing arranged on the output axle and a pulling wheel mounted on top of the freewheel bearing for providing a connection with the rotatable wheel, and the shoe is connected to the primary side of the planetary gear system by means of a cogwheel arranged around the pivoting axle.