A drive unit and a powered vehicle

摘要

The present invention relates to a drive unit (100) comprising a rolling means (102) intended to be in frictional engagement with a surface (u) over which said drive unit (100) is intended to move. The drive unit (100) also comprises a first driving means (104) and a second driving means (106), co-operatively operable to provide both propulsion and steering of the drive unit (100), while eliminating slippage between the rolling means (102) and the surface (u). The second driving means (106) is operable to rotate a rotatable support means (108) about a center axis (c. a.). The first driving means (104) is operable to, via a gear means (110), rotate the rolling means (102) about a rolling axis (r. a.). The rolling means (102) is displaced a predetermined distance from the center axis (c. a.). The first driving means (104) is arranged in such a way that the support means (108) is able to rotate unlimitad.