Electrostatic spray gun for powder coating material

Details Electrostatic spray gun for powder coating material Electrostatic spray gun for powder coating material

1974-09-16

1976-02-24

Ward, Jr., Robert S.

Fluid sprinkling, spraying, and diffusing

Weather control

239105, 239291, B05B 502, B05B 128

Patent

active

039400611

ABSTRACT:
The invention relates to an electrostatic spray gun for the deposition of powdered coating material characterized by an improved deposition efficiency and provided with a multi-stage, trigger operated control that permits spraying at a plurality of conditions that may be preselected by the operator. An axially disposed needle charging electrode is used and an axial air flow passage surrounds the same to reduce any troublesome accumulation of powder on the needle under all spraying conditions.

REFERENCES:
patent: 2302289 (1942-11-01), Bramston-Cook
patent: 2504117 (1950-04-01), Downs
patent: 2743963 (1956-05-01), Peeps
patent: 3061198 (1962-10-01), Kerr et al.
patent: 3179849 (1965-04-01), Schweriner
patent: 3292860 (1966-12-01), Williams et al.
patent: 3332623 (1967-07-01), Gallant
patent: 3473735 (1969-10-01), Drum
patent: 3630441 (1971-12-01), Felici et al.
patent: 3659151 (1972-04-01), Fabre

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