Patent ID: 7837136
Filing Date: 2010-11-23
Classification: B05B

Abstract:
1. An electrostatic coating apparatus comprised of a paint atomizing means adapted to spray atomized paint particles toward a work piece, a housing member formed of an electrically insulating material to accommodate said paint atomizing means in position, a high voltage application means for imparting a high voltage electrostatic charge to paint particles sprayed by said paint atomizing means for electrostatic deposition on said work piece, and a corona ring formed in the shape of a ring circumventing said housing member and applied with a high voltage from said high voltage application means to induce corona discharges, characterized in that said electrostatic coating apparatus comprises: said corona ring formed of a conducting material and having a blade ring projected at least in axially forward, axially rearward, radially inward or radially outward of said housing member, said blade ring being gradually reduced in thickness toward a projected end in the fashion of a thin blade, providing a sharp edge portion all around said blade ring, said projected end of the blade ring projecting in a rearward direction; and said blade ring formed of a conducting material and discharging a high voltage continuously substantially on and around entire edge portion.