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:
Mar. 10, 1998
Filed:
Feb. 28, 1995
Ronald J Hartle, Amherst, OH (US);
Nordson Corporation, Westlake, OH (US);
Abstract
An electrostatic coating system includes an electrically nonconductive coating material tube is disposed in an electrically conductive handle portion of the spray gun and extends into an electrically nonconductive barrel or extension portion of the spray gun. The coating material tube is preformed to and maintains a configuration corresponding to a configuration of a passage in the handle and extension portions of the spray gun. A packing cartridge is connected between the trigger and the spray gun valve and has a tapered end portion which is encircled by an O-ring seal which engages a tapered bore in the extension portion of the spray gun. The handle portion of the spray gun is grounded through a conductive inner layer of an air conduit connected to the spray gun. An atomizing air passage extends from the handle portion of the spray gun through the extension portion to the nozzle. A pattern air passage also extends from the handle portion through the extension portion to the nozzle. Thumb wheel operated air flow control valve assemblies are located in the atomizing air and pattern air passages.