Coating apparatus – Projection or spray type – Applying solid particulate material
Patent
1980-06-18
1982-04-06
McIntosh, John P.
Coating apparatus
Projection or spray type
Applying solid particulate material
118323, 118326, 118DIG7, B05L 1500
Patent
active
043230300
ABSTRACT:
The disclosure concerns a spray coating device for spray coating an article with particulate material in a coating chamber. In connection with a change of coating material, e.g. a color change, it is desirable to remove the previous coating material from the coating chamber. To this end, the inner walls of the coating chamber are defined by movable endless belts whose inner courses move to deliver coating material that has accumulated thereon to the floor of the chamber. The floor of the chamber is also comprised of an endless belt that moves the coating material out of the chamber. The roof of the chamber is also comprised of an endless belt which moves the coating material to one of the side walls. The belts may be cleaned by various devices such as a brush, gas blast nozzles and/or a suction device. Slots defined in the walls permit introduction of the article to be sprayed and the spraying device into the chamber. Plastic elements limit the size of the slot through which the spraying device passes.
REFERENCES:
patent: 3201272 (1965-08-01), Forshee
patent: 3870016 (1975-03-01), Schneider
patent: 3902455 (1975-09-01), Lehmann et al.
patent: 3942420 (1976-03-01), Marino
patent: 4153008 (1979-05-01), Marino et al.
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