Electrostatic painting apparatus having optically sensed flow me

Details Electrostatic painting apparatus having optically sensed flow me Electrostatic painting apparatus having optically sensed flow me

1988-09-16

1989-11-07

Nozick, Bernard

Coating apparatus

Control means responsive to a randomly occurring sensed...

118629, 73261, 7386177, 7386194, 324175, 239 68, 239112, 239703, 239708, B05C 1100

Patent

active

048784540

ABSTRACT:
A high-voltage electrostatic painting apparatus (10) for coating an article (12) inside a spray booth (14). The apparatus (10) includes a flow rate meter (34) disposed within the electrostatic environment for measuring the rate at which paint is supplied to a discharge atomizer (18). The meter (34) includes two intermeshing rotors (44, 46) disposed within a sealed non-ferromagnetic housing (54). The two rotors (44, 46) rotate in response to liquid paint flowing through the housing (54). A magnetic coupling (64) acts through the housing (54) to drive an optical signal producing disc (62). A pick-up sensor (82) senses the optical signal from the disc (62) and sends that signal outside the booth (14) to a master control unit (40) via a fiber optic conductor (90). The master control unit (40) automatically adjusts a flow rate regulator valve (92) to provide a constant rate of paint flow to the discharge atomizer (18).

REFERENCES:
patent: 3342071 (1967-09-01), Meyers
patent: 4159806 (1979-07-01), Scharfenberger
patent: 4539932 (1985-09-01), Vecellio
patent: 4723726 (1988-02-01), Oishi et al.
patent: 4767164 (1988-08-01), Yeung
patent: 4789100 (1988-12-01), Senf

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