Coating apparatus – With means to apply electrical and/or radiant energy to work... – Electrostatic and/or electromagnetic attraction or...
Patent
1976-09-27
1978-05-30
Stein, Mervin
Coating apparatus
With means to apply electrical and/or radiant energy to work...
Electrostatic and/or electromagnetic attraction or...
118627, 427 25, B05B 502
Patent
active
040917649
ABSTRACT:
Objects moving through a coating chamber are coated with particles, flakes or fibres in a uniform manner as a result of the particles, flakes or fibres being fed to the coating chamber by a conveying system which includes a vibrating feeder box, a gravity duct, a vibrating conveyor channel, a T-shaped distributor body and a transducer located below the distributor body. The transducer includes insulated wires on the bottom leg thereof that convey an alternating current and electrodes which are capable of carrying a direct current to the moving objects to be coated which are themselves grounded. When the particles, flakes or fibres drop from the T-shaped distributor body to the vicinity of the transducer they become influenced by the alternating electrostatic field and rise up in swirls. They then become influenced by the direct electrostatic field between the electrodes and the objects to be coated and they move along the lines of flux to coat the objects uniformly.
REFERENCES:
patent: 2378025 (1945-06-01), Melton et al.
patent: 2748018 (1956-05-01), Miller
patent: 3797457 (1974-03-01), Bushnell
patent: 3905785 (1975-09-01), Fabre
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