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. 17, 2012
Filed:
Nov. 30, 2007
David M. Seitz, Riga, MI (US);
David M. Seitz, Riga, MI (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
A method and apparatus for coating articles with a coating material comprise forming a charged body of coating material, atomizing coating material from the charged body to form charged atomized coating material particles, and repelling the charged coating material particles from an apparatus which forms the charged body of coating material and atomizes the coating material from the charged body to form charged atomized coating material particles. Repelling the charged coating material particles from the apparatus includes providing a repelling electrode, providing a power supply to supply electrical charge of the same polarity as the charged atomized coating material particles, positioning the repelling electrode adjacent a region where the charged atomized coating material particles are formed, and providing on the repelling electrode a feature which increases an electric field gradient adjacent the feature to enhance the repulsive force between the feature and the charged atomized coating material particles.