B05B 5/006

Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means {the high voltage supplied to an electrostatic spraying apparatus being adjustable during spraying operation, e.g. for modifying spray width, droplet size the adjustement of high voltage is responsive to a condition, e.g. a condition of material discharged, of ambient medium or of target}