Method for electrostatic coating of articles with powdered mater

Details Method for electrostatic coating of articles with powdered mater Method for electrostatic coating of articles with powdered mater

1975-10-28

1978-05-30

Pianalto, Bernard D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

B05B 504

Patent

active

040924408

ABSTRACT:
The high voltage between a rotary disk coating powder dispensing device and an electrically grounded article to be coated is maintained constant when the spacing between a spray disk at high potential and an article to be coated at ground potential is too great to permit a breakdown discharge, whereas at smaller spacings the current flowing as the result of transport of charged coating material is held constant, but when the spacing goes below a minimum value at which the energy stored in the disk device and in the wiring capacitance is sufficient to support a breakdown, the high-voltage supply is switched off, by short-circuiting the high-voltage transformer secondary winding. When the high-voltage supply is thus switched off, an acoustic or optical alarm is actuated to call attention to the necessity of restoring operation. The spacing between the article being coated and the disk device varies in operation of the coating process as a series of articles suspended on a conveyor are moved past the disk device by driving the conveyor.

REFERENCES:
patent: 2568611 (1951-09-01), Crouse
patent: 3083121 (1963-03-01), Gauthier
patent: 3641971 (1972-02-01), Walberg

Affiliated with

Also associated with

Rating

Method for electrostatic coating of articles with powdered mater does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for electrostatic coating of articles with powdered mater, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for electrostatic coating of articles with powdered mater will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-470197