Automatic window washer

摘要

The window washer is suspended from the top of a building by a suspension line and moves up and down the line while cleaning the side of the building. Cleaning liquid is dripped onto brushes which scour the surface to be cleaned. A squeegee in wiping contact with the wetted surface wipes the cleaning liquid from such surface and collects it generally at a leading edge portion of the squeegee. Then, collected cleaning liquid is removed by suction.