B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
317/3
B05D 1/04 (2006.01) B05D 1/06 (2006.01)
Patent
CA 1125358
HIGH POTENTIAL DISCHARGE CONTROL CIRCUIT INCLUDING A RESISTIVE MATERIAL COATED ELECTRODE FOR INDUCTION CHARGING ELECTROSTATIC SPRAYING SYSTEM Abstract of the Disclosure A high voltage discharge control circuit is provided for an induction-charging spraying system. The circuit comprises a first re- sistance means comprising an induction-charging electrode coated with a resistive material that retards transport of electric charge across the electrode surface to electrode edges or surface discontinuities which are most susceptible to arcing to an electrical ground point. A current limiting resistor may be in series with the resistive coating and a high voltage source to inhibit current surge to the electrode surface from other circuit elements. The circuit may also contain additional current limiting series resistors in the high voltage cable and in the power supply to further inhibit current surges. Shunt resistors are provided between high potential circuit elements and electrical ground to drain accumulated charge from the circuit.
325243
Du John W.
Sickles James E.
Borden Ladner Gervais Llp
Ppg Industries Inc.
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