Patent ID: 7416040

Claim:
A travelling device ( 20 ) comprising a frame ( 1 ), flexibly suspended wheels ( 2 ) rotating on their vertical axes in an unlimited angular range of 360° as well as on their horizontal axes, a motor unit ( 3 ) with a drive shaft ( 13 ), a working device, first transmission discs ( 7 ) for travelling wheel ( 2 ) girded by a first transmission member ( 9 ) guided over a driving roller ( 11 ), characterized in that travelling wheel ( 2 ) drive is effected by means of second transmission discs ( 6 ) connected with each travelling wheel ( 2 ) by a transmission device ( 14 ), and wherein all second transmission discs ( 6 ) are connected with moving off device ( 8 ) on drive shaft ( 13 ) by means of a second transmission members ( 9 ).