Patent ID: 7927170
Filing Date: 2011-04-19
Classification: A63H

Abstract:
1. A portable device comprising a motor for providing vibration, a power source for powering the motor, the motor rotating a weight, a center of gravity of the weight offset from an axis of the motor and spaced apart from a center of gravity of the portable device, a switching device for controlling a rotational direction of the motor, propelling means for engaging a surface and for propelling the device when the motor is vibrating, the axis of the motor lying in a direction of the movement of the portable device, the offset of the weight configured to induce a rotational rocking motion of the portable device when the motor is activated, the propelling means extending downwardly at an angle to vertical, and an input device connected to the switching device, the switching device arranged to switch the direction of the motor when the input device receives a predetermined signal, wherein changing the rotational direction of the motor causes the portable device to move in one of a left or right arc.