Electrostatic spray gun

Details Electrostatic spray gun Electrostatic spray gun

1979-07-05

1981-10-13

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Electrostatic type

With fluid entrainment

239415, 239528, B05B 502

Patent

active

042944112

ABSTRACT:
An improved electrostatic spray gun, particularly of the hand-held type, is disclosed including an electrically insulative barrel and nozzle assembly, an electrically insulative air valve module mounted to the rear of the barrel assembly and externally thereof, and an electrically conductive metal handle assembly enclosing the rear end of the barrel and the air valve module. A charging electrode protrudes from the discharge orifice of the nozzle assembly. The flow of air through the barrel and nozzle assembly is controlled by a trigger which actuates the air valve. Actuation of the air valve in turn controls a needle and seat valve assembly close to the discharge orifice of the nozzle assembly to control the flow of coating material through the gun. A resistor is disposed inside the needle valve immediately upstream of the charging electrode. The elements of the electrostatic spray gun of this invention cooperate to provide a simple, lightweight, balanced gun having a high degree of reliability and repairability and clean and safe operation.

REFERENCES:
patent: 2991940 (1961-07-01), Dupler et al.
patent: 3367578 (1968-02-01), Juvinall et al.
patent: 3583632 (1971-06-01), Shaffer et al.
patent: 3966238 (1976-06-01), Washkewicz
patent: 4123007 (1978-10-01), Gardner
patent: 4182490 (1980-01-01), Kennon

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