Nozzle for electrostatic spray gun

Details Nozzle for electrostatic spray gun Nozzle for electrostatic spray gun

1974-04-17

1976-02-17

Ward, Jr., Robert S.

Fluid sprinkling, spraying, and diffusing

Weather control

239 3, B05B 502, B05B 704

Patent

active

039387402

ABSTRACT:
An electrostatic spray gun for liquid paint has a nozzle that comprises an inner body formed of a sintered material that consists of an electrically non-conductive matrix, e.g. polytetrafluoroethylene, with conductive particles, e.g. bronze powder, dispersed in the matrix, and an outer body of electrically insulating plastic material. The rear end of the inner body is connected to high voltage, and it has an annular front surface around a paint discharge orifice. This surface shows a lot of such bronze particles that form point electrodes for producing air ions. Two additional needle electrodes are clamped between the two bodies. The paint is dispersed by air jets and the air ions attach to the paint particles.

REFERENCES:
patent: 3072341 (1963-01-01), Point et al.
patent: 3128045 (1964-04-01), Gauthier
patent: 3169883 (1965-02-01), Juvinall
patent: 3268171 (1966-08-01), Walberg
patent: 3290169 (1969-12-01), Sedlacsik
patent: 3292860 (1966-12-01), Williams et al.
patent: 3317138 (1967-05-01), Fraser
patent: 3348186 (1967-10-01), Rosen
patent: 3764068 (1973-10-01), Lacchia
patent: 3826425 (1974-07-01), Scharfenberger et al.

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