US Patent 7762481 Electrostatic rotary atomizer with indirect internal charge

An electrostatic rotary atomizer apparatus includes a housing encasing a turbine assembly, a shaping air assembly disposed radially outwardly from the turbine assembly for fluid communication with a shaping air supply, and a charge ring mounted to the housing and adapted to be connected to an electrical power supply. The charge ring has a plurality of electrodes within the housing. Ions emitted by the charge ring are directed through shaping air passages to intersect paint droplets leaving a rotating bell cup.