Patent ID: 7047595

Claim:
A self-running cleaning apparatus that cleans while moving along a wall surface comprising: a main unit, the main unit having a front, a back, sides, a top, and a bottom; wheels for moving the main unit, the wheels connected to the sides of the main unit, the wheels having an axis; a rotating inlet attached to the bottom of the main unit for sucking matter from a bottom surface, the rotating inlet having a front end and a free end, wherein the front end of the rotating inlet forms a straight line, wherein the free end of the rotating inlet projects beyond the side of the main unit; suction-inlet-installation means for installing the rotating inlet to the main unit so that the rotating inlet can rotate; tension means for applying tension to of said rotating inlet such that the front end of said rotating inlet is parallel with the axis of the wheels when no external force is applied; wherein the rotating inlet is positioned at the front of the main unit when no external force is applied; a rotation-control means for rotating the main unit's direction of movement by 90 degrees when the distance from the front of the main unit to said wall surface in the front becomes a specified pre-determined distance; and wherein said rotating inlet is pressed and rotated by said wall surface in the front during the rotating operation by said rotation-control means.