The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1992
Filed:
Feb. 07, 1991
Gary L Demeny, Delavan, IL (US);
Robert G Smead, St. Charles, IL (US);
Other;
Abstract
A spray painting booth for electrostatically painting objects includes encapsulated electrically charged panels which are adapted to repel electrically charged paint particles that are produced by an electrostatic spray painting device. The electrostatic spray painting device is charged to a potential of 60,000 to 135,000 volts DC negative with respect to ground so that the resulting spray of paint particles is negatively charged. An object or article to be painted is disposed in the booth by a conveyor mechanism and is maintained at ground potential. The encapsulated, electrically charged panels or walls of the booth are charged to a potential of 30,000 volts DC negative with respect to ground by a power supply such that the panels are charged to a potential between the negative DC potential with respect to ground to which the spray paint device is charged and the ground potential of the article to be painted. The resulting electrostatic field emanating from the panels repels paint particles that do not adhere to the article and thereby reduces the amount of paint that would otherwise accumulate on surfaces of the spray paint booth near the article being painted.