US 12,325,041 B2
System and method for electrostatic coating
Robert McShane, Evergreen Park, IL (US); Alex Duchak, Frankfort, IL (US); Steve Murray, Roselle, IL (US); Jeremy Murray, Roselle, IL (US); and Parakh Kantawala, Chicago, IL (US)
Assigned to PowderCoil Technologies, LLC, Crown Point, IN (US)
Filed by PowderCoil Technologies, LLC, Crown Point, IN (US)
Filed on Oct. 28, 2022, as Appl. No. 17/976,549.
Claims priority of provisional application 63/334,326, filed on Apr. 25, 2022.
Claims priority of provisional application 63/272,725, filed on Oct. 28, 2021.
Prior Publication US 2023/0136624 A1, May 4, 2023
Int. Cl. B05B 7/14 (2006.01); B05B 5/03 (2006.01); B05B 5/08 (2006.01); B05B 5/14 (2006.01); B05B 14/42 (2018.01); B05B 14/45 (2018.01); B05B 14/48 (2018.01); B05D 1/06 (2006.01); B05D 3/02 (2006.01)
CPC B05B 5/032 (2013.01) [B05B 5/087 (2013.01); B05B 14/42 (2018.02); B05B 14/45 (2018.02); B05B 14/48 (2018.02); B05D 1/06 (2013.01); B05D 3/0272 (2013.01); B05B 5/14 (2013.01); B05B 7/1486 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electrostatic coating system comprising:
a plurality of electrostatic coating apparatuses, each comprising:
a frame;
a plurality of mini manifolds, wherein each of the mini manifolds comprises an inlet, an initial chamber, a nozzle, and a mini manifold outlet, wherein the inlet functions as an inlet for air or powder particles, and the mini manifold outlet functions as an outlet for the air or the powder particles;
a mixing chamber, the mixing chamber receiving the air and the powder particles from the mini manifold outlets and intermixing and fluidizing the air and the powder particles to form a fluidized mixture;
a volute, the volute guiding the fluidized mixture of particles from the mixing chamber to an electrostatic vacuum chamber and through an outlet, wherein the outlet is flanked by a plurality of electrostatic emitter bars that generate an electrostatic field to propel the fluidized mixture of particles onto a medium;
an oven located above and between a first electrostatic coating apparatus and a second electrostatic coating apparatus of the plurality of electrostatic coating apparatuses, the oven used for curing the medium;
an enclosure housing the pneumatic controls and powder supplies of the first and second electrostatic coating apparatus;
a powder management system operatively connected to the first electrostatic coating apparatus and configured to provide a powder and an air supply to the first electrostatic coating apparatus; and
a controller operatively connected to the first electrostatic coating apparatus and the powder management apparatus and configured to control a first variable of the first electrostatic coating apparatus and a second variable of the powder management system.