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:
Jan. 13, 1998
Filed:
Dec. 06, 1996
Ronald D Konieczynski, North Royalton, OH (US);
Nordson Corporation, Westlake, OH (US);
Abstract
An apparatus for transferring electrically conductive coating material comprises a filling station having a first coupling element connected to a source of the coating material and a shuttle carrying a second coupling element which is movable with respect to the filling station between a paint transfer position in which the coupling elements engage and a neutral position physically spaced from the filling station. The shuttle, in turn, is connected to the reservoir of a piston pump which communicates with one or more air operated or air assist spray guns. A high-voltage power supply is connected to the metal body of the piston pump to charge the electrically conductive coating material immediately before it is supplied to the spray gun. A pneumatic/mechanical control system controls the operation of the shuttle, pump and electrostatic power supply to ensure that a voltage block is maintained between the source of coating material and the electrostatically charged coating material which is discharged from the spray gun.