Fluid sprinkling – spraying – and diffusing – Electrostatic type
Patent
1995-02-28
1998-03-10
Oberleitner, Robert J.
Fluid sprinkling, spraying, and diffusing
Electrostatic type
2396901, 141192, 118629, B05B 500
Patent
active
057251614
ABSTRACT:
An electrostatic coating system includes an electrically nonconductive coating material tube is disposed in an electrically conductive handle portion of the spray gun and extends into an electrically nonconductive barrel or extension portion of the spray gun. The coating material tube is preformed to and maintains a configuration corresponding to a configuration of a passage in the handle and extension portions of the spray gun. A packing cartridge is connected between the trigger and the spray gun valve and has a tapered end portion which is encircled by an O-ring seal which engages a tapered bore in the extension portion of the spray gun. The handle portion of the spray gun is grounded through a conductive inner layer of an air conduit connected to the spray gun. An atomizing air passage extends from the handle portion of the spray gun through the extension portion to the nozzle. A pattern air passage also extends from the handle portion through the extension portion to the nozzle. Thumb wheel operated air flow control valve assemblies are located in the atomizing air and pattern air passages.
REFERENCES:
patent: 3606972 (1971-09-01), Ferrant
patent: 3746254 (1973-07-01), Duncan et al.
patent: 4221239 (1980-09-01), Reale
patent: 4313475 (1982-02-01), Wiggins
patent: 4544100 (1985-10-01), Simashkevich et al.
patent: 5271569 (1993-12-01), Konieczynski et al.
patent: 5322221 (1994-06-01), Anderson
Publication entitled "The DEIMOS-Electrostatic System", by Bollhoff Verfahrenstechnik, publication date unknown but prior to Jan. 27, 1995.
Lipka Pamela J.
Nordson Corporation
Oberleitner Robert J.
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