Structure for preventing current from leaking out of devices for

Details Structure for preventing current from leaking out of devices for Structure for preventing current from leaking out of devices for

1992-01-16

1993-04-06

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Electrostatic type

With automatic safety feature

239690, 361228, B05B 500

Patent

active

051996502

ABSTRACT:
Disclosed herein is a structure for preventing current from leaking out of devices such as a valve, an intermediate reservoir, etc., which are employed in an electrostatic spray coating apparatus for applying a desired voltage to electrically conductive paint so as to electrostatically spray-coat a workpiece therewith. The current-leakage prevention structure basically comprises any one of the devices each made of an electrically-conductive material, a container made of an insulating material, which accommodates the device therein and has a paint passage defined therein capable of communicating with the device, and a cover for externally covering the container. A creepage distance defined by the container and the cover is set to reach a desired creepage length or more capable of preventing current leakage. It is therefore possible to reliably prevent current from leaking even when a high voltage is applied to the devices.

REFERENCES:
patent: 3599038 (1971-08-01), Skidmore
patent: 3770205 (1973-11-01), Proctor et al.
patent: 3971337 (1976-07-01), Hastings
"Electrostatic Spraying with Conductive Liquids", NTIS Tech. Notes, No. DEC, 1989, Springfield, Va., p. 1042, NASA, Lyndon B. Johnson Space Center.

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