Electrostatic spray coating apparatus

Details Electrostatic spray coating apparatus Electrostatic spray coating apparatus

1975-02-11

1977-03-01

Blunk, Evon C.

Fluid sprinkling, spraying, and diffusing

Weather control

118629, 427 27, 361228, B05B 502

Patent

active

040098290

ABSTRACT:
An improved electrostatic spray charging device for spray guns is disclosed. The device comprises an adapter formed from a dielectric material in the shape of a generally cylindrical tube adapted at one end to be secured to the end of a conventional spray gun and constructed at the second end to provide an inductive charging field for materials discharged by the spray gun. The second end of the adapter is formed, in the preferred embodiment, into two diametrically opposed lobes, each of which carries on its interior surface at least one charging plate to which a d.c. voltage on the order of 10-20 KV is applied. The exterior surface of each lobe carries an electrically grounded electrode which preferably is annular in shape to provide an electric field configuration that prevents accumulation of charged spray particles on the exterior surfaces of the adapter.

REFERENCES:
patent: 2491889 (1949-12-01), Bennett et al.
patent: 2976175 (1961-03-01), Reindl
patent: 3613993 (1971-10-01), Gourdine et al.
patent: 3698635 (1972-10-01), Sickles
patent: 3700168 (1972-10-01), Ferrant
patent: 3900000 (1975-08-01), Gallen

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