A drive unit, and a powered vehicle

摘要

The present invention relates to a drive unit ( 10 ) comprising a rolling means ( 12 ) intended to be infrictional engagement with a surface over which said drive unit ( 10 ) is intended to move. The drive unit ( 10 ) also comprises a first driving means ( 14 ) and a second driving means ( 16 ), co-operatively operable to provide both propulsion and steering of said drive unit ( 10 ) while eliminating slippage between said rolling means ( 12 ) and said surface. The first driving means ( 14 ) is arranged on a rotatable support means ( 18 ) rotatable about a center axis (c.a.) and is operable to rotate said rolling ( 12 ) about a roling axis. rolling means ( 12 ) is displaced a predetermined distance from said center axis (c.a.), and the second driving means ( 16 ) is operable rotate the support means ( 18 ) about said center axis (c.a.).