Patent ID: 7784718
Filing Date: 2010-08-31
Classification: B05B

Abstract:
1. An electrostatic paint sprayer, comprising: a body member defining a paint passage for flowing a liquid paint supplied from a paint source; a nozzle assembly adapted to be mounted to the rear end of the body member so as to fluidly communicate with the paint passage, the nozzle assembly including: a cup member mounted to the body member for rotation about the body member; an electrode ring disposed about the axis and mounted to the cup member so as to forwardly extend from a front face of the cup member, the electrode ring electrically connected to an electric power source; a plurality of electrode pins electrically coupled to the electrode ring and disposed about the axis, wherein at least two of the plurality of electrode pins are disposed on the line between the pair of protrusions, and wherein the electrode pins are oriented so as to diverge in a forward direction by a predetermined angle; wherein the cup member defines a plurality of orifices along an inner surface of the cup member and adjacent to the front face of the cup member, and wherein the orifices are configured such that electric fluxes through the orifices enhance an electric field generated around the nozzle.