Patent ID: 6874712
Filing Date: 2005-04-05
Classification: B05B

Abstract:
1. A powder spraying gun for electrostatic powder coating application comprising: a gun body having an interior powder charging chamber defining a surface extending along an axis of the gun body and fashioned from a material exhibiting resistance to powder impact fusion; a powder supply input in fluid communication with the powder charging chamber at a first end thereof and extending at an angle to the axis different from 90°; an output chamber having a funnel-shaped output in fluid communication with the powder charging chamber at a second end thereof; a ground electrode extending into the first end of the powder charging chamber; a plurality of interior charging electrodes radially extending into the powder charging chamber; and a plurality of exterior charging electrodes extending through the funnel-shaped output and positioned so as to be capable of creating an external electrostatic field between the gun output and a workpiece to be coated.