Fluid sprinkling – spraying – and diffusing – Electrostatic type – With electrogasdynamic generator in spray device
Patent
1979-09-07
1980-09-30
Kaplan, Morris
Fluid sprinkling, spraying, and diffusing
Electrostatic type
With electrogasdynamic generator in spray device
239707, 361215, 361227, B05B 500
Patent
active
042250900
ABSTRACT:
A device for painting by electrostatic powder spraying wherein a passage for triboelectrifying powder particles is formed in an electrically conductive housing and is surrounded by an electric insulator layer of a synthetic macromolecular material, such as nylon or fluorocarbon resin, containing powder of an electrically conductive material, such as copper, aluminum or carbon. As the electrostatic powder moves through the passage, it frictionally engages the insulator layer and causes an electric charge on the surface of the electric insulator, due to the triboelectrification movement in the electric insulator, and a current flows to the powder. Therefore, powder particles can be continuously triboelectrified without suppling any voltage or with supplying a very low voltage for forming an electric field.
REFERENCES:
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patent: 3070132 (1962-12-01), Sheridan
patent: 3473087 (1969-10-01), Slade
patent: 3903321 (1975-09-01), Schaad
patent: 3907955 (1975-09-01), Viennot
patent: 4009829 (1977-03-01), Sickles
patent: 4020393 (1977-04-01), Porter
patent: 4071192 (1978-01-01), Myers
patent: 4090666 (1978-05-01), Peck
patent: 4110486 (1978-08-01), Lacchia
Kako Hiroyoshi
Kobayashi Nobuo
Kaplan Morris
Toyota Jidosha Kogyo Kabushiki Kaisha
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