Patent ID: 7913938

Claim:
An electrostatic spray charging nozzle comprising: a nozzle cap having an outlet; a nozzle body having a first bore, the first bore having an inner surface; a fluid tip assembly extending at least partially through the first bore, the fluid tip assembly having an outer surface in contact with the inner surface of the first bore along first lengths of the fluid tip assembly, the outer surface not in contact with the inner surface of the first bore along second lengths of the fluid tip assembly that are adjacent the first lengths, and having a liquid inlet adapted to be connected to a source of liquid, and a liquid outlet adapted to dispense the liquid through the outlet of the nozzle cap, the second lengths defining gas channels for delivering atomizing gas to the outlet of the nozzle cap; a conductive air cap for inductive electrostatically charging the dispensed liquid having a second bore aligned with the first bore, and positioned between the nozzle cap and the nozzle body so that a tip portion of the fluid tip assembly at the liquid outlet is received within the second bore; a substantially non-conductive element positioned between the nozzle cap and the air cap, the substantially non-conductive element including a jet outlet hole; and an adjustment mechanism for causing longitudinal movement of the fluid tip assembly within the first bore over a range of longitudinal distances measured between the liquid outlet of the fluid tip assembly and the outlet of the nozzle cap and for setting a position of the liquid discharge outlet at any of a plurality of longitudinal distances within that range; wherein the nozzle cap includes an aperture to removably receive the air cap.