Fast discharge electrostatic coating system

Details Fast discharge electrostatic coating system Fast discharge electrostatic coating system

1976-10-07

1978-03-07

Feldbaum, Ronald

Coating apparatus

Edible base or coating type

Tumbling particulate work

118629, B05C 1100

Patent

active

040773540

ABSTRACT:
A safety power supply system for electrostatic spray coating utilized high frequency (audio or radio frequencies) rectified DC pulses to provide the high voltage between an electrode on a spray gun and work to be coated. A high resistance direct electrical path to ground is provided for all parts of a coating system charged to high voltage during coating operations including highly conductive coating materials. For manual spray guns small electrodes or the atomizing edge of a coating material provides the electrode making it virtually impossible for an operator to come in contact with high voltage charged parts before a charge is substantially bled to ground.

REFERENCES:
patent: 3273015 (1966-09-01), Fischer
patent: 3599038 (1971-08-01), Skidmore
patent: 3641971 (1972-02-01), Walberg
patent: 3731145 (1973-05-01), Senay
patent: 3746253 (1973-07-01), Walberg
patent: 3795839 (1974-03-01), Walberg
patent: 3864603 (1975-02-01), Kozinski et al.
patent: 3872370 (1975-03-01), Regnault
patent: 3896994 (1975-07-01), Walberg
patent: 3929286 (1975-12-01), Hastings et al.

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