Patent ID: 6866212

Claim:
An electrostatic spraying device being configured and disposed to electrostatically charge and dispense a liquid composition from a supply to a point of dispersal, wherein the device comprises: a reservoir configured to contain the supply of liquid composition; a nozzle to disperse the liquid composition, the nozzle being disposed at the point of dispersal; a channel disposed between the reservoir and the nozzle, wherein the channel permits the electrostatic charging of the liquid composition upon the liquid composition moving within the channel; a high voltage power supply electrically connected to a power source; and a high voltage electrode electrically connected to the high voltage power supply, wherein a portion of the high voltage electrode is disposed between the reservoir and the nozzle, and wherein the high voltage electrode electrostatically charges the liquid composition within the channel at a charging location, wherein the nozzle pathway comprises an outlet path disposed adjacent to the nozzle, the outlet path having a diameter of from about 0.1 mm to about 1 mm or and having a length greater than 0 mm to about 5 mm, and a main path disposed between the outlet path and the charging location, the main path having a diameter greater than outlet path and being outwardly tapered towards the changing location at an angle greater than 0 to about 10 degrees.