Electrostatic spray device provided with electric-arc protection

Details Electrostatic spray device provided with electric-arc protection Electrostatic spray device provided with electric-arc protection

1986-10-01

1988-04-12

Griffin, Donald A.

Electricity: electrical systems and devices

Electric charging of objects or materials

Particulate matter

239691, B05C 100, B05B 502

Patent

active

047378875

ABSTRACT:
An electronic safety device to prevent electrical arcing in electrostatic sprayer apparatus for spraying material such as paint comprises a device for generating a very low voltage AC signal in a fixed supply and control unit and a voltage step-up device in a mobile sprayer. A device sensitive to variations in the alternating current flowing in the conductors linking the generating device to the step-up device is connected to a disabling device capable, for example, of blocking the generating device when too sudden a current variation is measured, since such a current variation may precede electrical arcing.

REFERENCES:
patent: 3764883 (1973-10-01), Staad et al.
patent: 3795839 (1974-03-01), Walberg
patent: 4009829 (1977-03-01), Sickles
patent: 4187527 (1980-02-01), Bentley
patent: 4508276 (1985-04-01), Malcolm

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