Self-propelled random motion lawnmower

摘要: Disclosed is a self-propelled lawnmower for cutting grass in completely random and unattended manner. The unit preferably propelled by battery comprises frame supported on pair of front caster wheels rear drive wheels. are coupled to continuously rotating shaft individual clutch-brake mechanisms. When boundary wire sensed coils the frame, wheel furthest away from broader unclutched braked pivot or turn mower. No backup motor complex steering control required. A adjustable rotary cutter blade assemblies carried frame.