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:
Jun. 19, 1979
Filed:
Nov. 09, 1977
Thomas L Bagby, Washington, IL (US);
Gary L Demeny, Delavan, IL (US);
Robert G Smead, St. Charles, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
An electrostatic coating system in which the workpiece to be coated is charged to a high DC potential. A conveyor moves the workpiece through a coating zone. A separate charge collector disc on the workpiece support passes close to but does not contact a charged conductor. An electrostatic charge is induced on the disc and is transferred to the workpiece. The conveyor is grounded and the workpiece support is connected to the conveyor through a high resistance which completes the charging circuit and drains the charge from the workpiece and support as they leave the coating zone. The ends of the charged conductor are curved away from the path of the charge collector. Insulating plates shield the conductor and limit swinging of the workpiece support.