Patent ID: 8590817

Claim:
A coating dispensing device including a trigger assembly for actuating the coating dispensing device to dispense coating material, and a nozzle through which the coating material is dispensed, a first port on the coating dispensing device and adapted to supply compressed gas to the coating dispensing device, a second port on the coating dispensing device and adapted to supply coating material to the coating dispensing device, a generator mounted within the coating dispensing device and having a shaft, a turbine wheel mounted within the coating dispensing device and on the shaft, compressed gas coupled to the first port impinging upon the turbine wheel to spin the shaft, producing voltage, an electrode on the coating dispensing device and adjacent the nozzle and coupled to the generator to receive electricity therefrom to electrostatically charge the coating material, and a first seal for sealing the shaft where the shaft protrudes from the generator to receive the turbine wheel to seal the generator from the turbine wheel, and bearings rotatably supporting the shaft within the generator behind the first seal.