Coating apparatus – With means to apply electrical and/or radiant energy to work... – Electrostatic and/or electromagnetic attraction or...
Patent
1973-06-01
1976-11-16
Stein, Mervin
Coating apparatus
With means to apply electrical and/or radiant energy to work...
Electrostatic and/or electromagnetic attraction or...
118630, 239 15, 317 3, B05B 502
Patent
active
039917100
ABSTRACT:
A coating system for efficient electrical precipitation of powder to articles. Articles are conveyed through a coating chamber where they are coated with a powder. Electrogasdynamic guns direct a cloud of charged particles into the coating chamber. Dilution air moves the cloud through the chamber with the articles. As the cloud moves with the articles, the charged particles precipitate to the articles. An exhaust section draws off the dilution air as the coated articles leave the chamber. Electrically conductive articles may be grounded through the conveyor system to provide a discharge path from the charged particles. For nonconducting or hard to ground articles, a precharge section places on the articles an initial charge of opposite polarity from the charged particles. A powder feed using a cylinder and piston arrangement to contain fluidized powder supplies a uniform powder suspension to the guns.
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Diamond Stephen
Gourdine Meredith C.
Porter Donald
Energy Innovations, Inc.
Stein Mervin
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