Patent ID: 7823809

Claim:
An electrostatic spraying device being configured and disposed to electrostatically charge and dispense a liquid composition from a supply to a point of dispense, 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 the liquid composition; a dispensing unit comprising a pump in immediate downstream relation with the reservoir for supplying the liquid composition from the reservoir, the 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, the nozzle being disposed at the point of dispense, a switch for manipulating the power source; and a selector for providing a spraying mode and a dripping mode selectively in response to the switch being manipulated; wherein the dripping mode is such that said pump is alone actuated to dispense the liquid composition out through the nozzle absent electrical charge, wherein the spraying mode is such that said pump as well as the emitter electrode are simultaneously activated to dispense the liquid composition out through the nozzle with the liquid composition being electrically charged at the emitter electrode prior to exiting the nozzle, wherein said selector comprises a handle, a first tact switch, and a second tact switch, said handle being engaged with a switch knob of said switch to be movable therewith, and having a portion selectively engageable with said first and second tact switches, said first tact switch being mounted on a printed board and connected to operate said high voltage generator and said actuator for executing said spraying mode upon being pressed by said handle, and said second tact switch being mounted on said printed board and connected to operate said actuator for executing said dripping mode upon being pressed by said handle, and wherein said pump is a gear pump which has a pump chamber with a flat base molded from a plastic material, gears in the pump chamber, and a metal plate mounted in the flat base, said metal plate formed with a pin for detachable electrical connection with a voltage terminal provided on the side of the housing to relay the high voltage to the emitter electrode, said emitter electrode and said metal plate being cooperative to charge the liquid composition within the pump chamber.