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:
Nov. 05, 1985
Filed:
Oct. 15, 1984
Gary L Demeny, Delavan, IL (US);
Robert G Smead, St. Charles, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
An electrostatic coating system includes a non-arcing electrical discharge zone having an approach section in which an elongated conductor connected to ground through a resistor converges towards the path of travel of a charge collector. The system also includes a contact section in which the conductor is adjacent the travel path of collector and the conductor physically contacts the collector as it passes through the contact section of the discharge zone. Conventional charge dissipation systems usually require separate resistors in each workpiece support member or a plurality of mechanically operated switches. The system initially inductively reduces the charge on the workpiece and then establishes electrical contact when a conductor connected to ground through a resistor is at about the same electrical potential as the workpiece and associated charge collector. The system is particularly useful in electrostatic coating systems having limited clearances which would prohibit the placement of a resistor in the workpiece support member.