Patent ID: 7823808
Filing Date: 2010-11-02
Classification: B05B

Abstract:
1. An electrostatic device configured and disposed to electrostatically charge and dispense a liquid composition from a supply to a dispensing point, wherein the device comprises: an actuator; a high voltage generator to provide a high voltage; a power source to activate said actuator and said high voltage generator; a reservoir to contain the supply of said liquid composition; and a dispensing unit comprising: a pump in immediate downstream relation with the reservoir for supplying the liquid composition from the reservoir, said pump being mechanically connected to said actuator to be driven thereby; an emitter electrode to electrostatically charge the liquid composition, the emitter electrode being electrically connected to said high voltage generator; and a nozzle to dispense the liquid composition, said nozzle being disposed at the dispensing point; wherein the device further comprises a field electrode surrounding the reservoir, said field electrode being connected to said high voltage generator; and wherein the reservoir is configured to provide a removable cartridge, said reservoir being formed separately from the field electrode, and wherein the emitter electrode and field electrode provide the entire liquid composition with more or less a common electric potential; said device includes a housing carrying said actuator, said high voltage generator, and said power source, said housing being formed with a concavity for detachably receiving said reservoir, said field electrode being incorporated in said housing around said concavity, and said reservoir being coupled to said dispensing unit and is cooperative therewith to define said cartridge, wherein said field electrode is in shaped to surround the reservoir.