US Patent 8021077 Self-moved device for colouring or spraying a surface

A self-moved device (1) suitable for spraying a fluid substance on a surface (50), comprising a moving system (6) for motion on the surface (50), at least one tank (4) suitable for containing said fluid substance, a spraying system (5) for spraying the fluid substance, a management and control system (7) for managing and controlling said moving system (6) and said spraying system (5), wherein the management and control system (7) is suitable for guiding the motion of said self-moved device (1) on said surface (50) and for activating said spraying system (5) in a plurality of spots of said surface (50) according to a predetermined scheme.