Electrostatic coating system

Details Electrostatic coating system Electrostatic coating system

1977-11-09

1979-06-19

Stein, Mervin

Coating apparatus

With means to apply electrical and/or radiant energy to work...

Electrostatic and/or electromagnetic attraction or...

118635, B05B 502

Patent

active

041583442

ABSTRACT:
An electrostatic coating system in which the workpiece to be coated is charged to a high DC potential. A conveyor moves the workpiece through a coating zone. A separate charge collector disc on the workpiece support passes close to but does not contact a charged conductor. An electrostatic charge is induced on the disc and is transferred to the workpiece. The conveyor is grounded and the workpiece support is connected to the conveyor through a high resistance which completes the charging circuit and drains the charge from the workpiece and support as they leave the coating zone. The ends of the charged conductor are curved away from the path of the charge collector. Insulating plates shield the conductor and limit swinging of the workpiece support.

REFERENCES:
patent: 2247963 (1941-01-01), Ransburg et al.
patent: 2463422 (1949-03-01), Ransburg et al.
patent: 2794416 (1957-06-01), Shepherd
patent: 3113037 (1963-12-01), Watanabe
patent: 3376156 (1968-04-01), Whitaker et al.
patent: 3900000 (1975-08-01), Gallen

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