Patent ID: 7823242

Claim:
A remotely operated high rise building window glaze or building facade cleaning apparatus, comprising a rigid master frame of three-dimensional open-cage rectangular shape, for in operation being placed in a position opposite and adjacent to a surface to be cleaned, an open-cage sub-frame of similar geometry and smaller dimensions, suspended within the master frame in spaced relationship therefrom, a cylindrical insertion tool attached to the sub-frame, such that its axis remains always perpendicular to the surface to be cleaned, including activation means therefor, cleaning tools attached to the insertion tool, including washing liquid spray means, mechanical scrubbing means and mechanical scraping means, wherein the mechanical scrubbing means and mechanical scraping means are rotatable and moveable in any desired planar motion in the plane of the surface to be cleaned, a rigid main frame attached to the sub-frame for vertical travel along the sub-frame, and a carrier frame attached to the main frame for horizontal travel along the main frame, wherein the insertion tool is attached to the carrier frame, and remote control means for remotely operating the apparatus, such that in operation, the liquid spray means, mechanical scrubbing means and mechanical scraping means are sequentially brought to bear against the surface to be cleaned by said activation means.