An automatic polishing machine for polishing aircraft windows uses pressurized air to create a suction to hold the polishing unit on the aircraft, creates a suction to automatically pick up a polishing pad, which is impregnated with polishing compound, and, using a motor driving through a flexible drive...http://www.google.es/patents/US5964645?utm_source=gb-gplus-sharePatente US5964645 - Window polisher
