Abstract: An inductor nozzle assembly for use with an air blast sprayer of the type having a tank holding waterborne pesticides, delivery lines connected to the tank and an air blast fan mounted in close proximity to the delivery lines, includes a spray nozzle mounted to the delivery lines which is disposed in the hollow interior of a conical-shaped housing mounted thereto. The housing is formed with an enlarged entrance opening, and a reduced diameter discharge opening which mounts an inductor ring charged with high electrical potential. A high velocity stream of air produced by the air blast fan is directed into the housing through its entrance opening where the air stream is accelerated by the conical shape of the housing toward its discharge opening.

Abstract: An electrostatic nozzle assembly for coating row crops and other plants with electrostatically charged particles of pesticide including a nozzle body formed with passageways to receive air and a grounded stream of waterborne pesticide for delivery through a nozzle tip to an inductor ring mounted between the nozzle body and an air nozzle having a discharge orifice. As the stream of waterborne pesticide is projected from the nozzle tip, it is impacted with a swirling, spirally moving stream of air produced by a swirl plate having a plurality of tapered air channels oriented tangentially relative to the pesticide stream and communicating with the air passageway in the nozzle body. The inductor ring inductively charges the pesticide in the terminal end of the nozzle tip.