Spray gun

Details Spray gun Spray gun

1988-10-27

1990-12-25

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Electrostatic type

With electrogasdynamic generator in spray device

239704, 239706, 239708, B05B 502

Patent

active

049796801

ABSTRACT:
A spray gun with electrokinetic charging of powdered material for the purpose of electrostatically coating workpieces with a powder coating. As the powder flows pneumatically through a channel of insulation material in the form of an annular gap, the plastic powder to be applied is charged by superimposition of triboelectric effects with ionization processes initiated by these effects at a passive ionizer electrode, and completed by friction against a semiconductive insert within the annular gap. Thus, the effective area of the electrostatic induction ionizer is expanded, the charge on the powder is increased and spark-like sliding discharges in the flow channels as well as dielectric breakdowns of the channel wall are prevented.

REFERENCES:
patent: 4090666 (1978-05-01), Peck
patent: 4135667 (1979-01-01), Benedek et al.
patent: 4498631 (1985-02-01), Gourdine
patent: 4659019 (1987-04-01), Talacko
patent: 4735360 (1988-04-01), Kirchner et al.
patent: 4798338 (1989-01-01), Bauch et al.

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