Patent ID: 6053437
Filing Date: 2000-04-25
Classification: B05B

Abstract:
An electrostatic rotary spray device, comprising:an atomizer housing defining an interior chamber therein;a rotary drive shaft extending at least partially through the interior chamber of the atomizer housing, the rotary drive shaft mounted at a first end to a turbine disposed in the atomizer housing and at a second end to an atomizer cup located outside of the atomizer housing, the atomizer cup comprising:a body having an outer surface, a rear section, and a generally frustoconically shaped forward section, the forward section having a front surface;one or more pathways within the body for conducting an electrical charge from the outer surface to the front surface, wherein at least one of the one or more pathways is a first type of pathway that includes three ends, a first end extending to the front surface and further comprising an extension portion which extends within the body from the conductive pathway to a second end proximate one of the outer or front surfaces of the body of the atomizer cup, and a third end extending to the rear or outer surface, the one or more pathways formed of a relatively more electrically conductive material in comparison with the material of the body; anda circuit for transferring a high voltage electrostatic charge from a power supply to an electrode, the electrode having an end positioned proximate to the third end of the conductive pathway to transfer electrical charge to the conductive pathway.