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:
Oct. 12, 2010
Filed:
Mar. 14, 2008
Applicants:
Peter Gefter, South San Francisco, CA (US);
Scott Gehlke, Berkeley, CA (US);
Lawrence Levit, Alamo, CA (US);
Inventors:
Peter Gefter, South San Francisco, CA (US);
Scott Gehlke, Berkeley, CA (US);
Lawrence Levit, Alamo, CA (US);
Assignee:
Illinois Tool Works Inc., Glenview, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05F 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus and method for minimizing contamination buildup on corona emitters that are employed in an ionizer. Contamination buildup control is accomplished with solely electronic means. High voltage is applied to the emitters with waveforms that serve to push contaminants away from the emitter, rather than attracting contaminants toward the emitters. The results are fewer cleaning cycles, more time between cleaning cycles, and more stable ionizer operation.