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:
Feb. 14, 2006
Filed:
Aug. 14, 2002
Kenneth L. Hardee, Middlefield, OH (US);
Michael S. Moats, Mentor on the Lake, OH (US);
Carl W. Brown, Jr., Leroy Township, OH (US);
Robert L. Wilhelm, Geneva, OH (US);
Edward M. Halko, Mentor, OH (US);
Zane A. Wade, Montville, OH (US);
Kenneth L. Hardee, Middlefield, OH (US);
Michael S. Moats, Mentor on the Lake, OH (US);
Carl W. Brown, Jr., Leroy Township, OH (US);
Robert L. Wilhelm, Geneva, OH (US);
Edward M. Halko, Mentor, OH (US);
Zane A. Wade, Montville, OH (US);
Eltech Systems Corporation, Chardon, OH (US);
Abstract
Various systems and methods for protecting electrowinning anodes having electrocatalytically active coatings in a bank of electrolytic cells from being damaged by reverse currents. In the first embodiment, one or more auxiliary power sources are provided that, when triggered by one or more predetermined conditions being met, keep the bank of electrolytic cells in an electrical state that is relatively harmless to the anodes having electrocatalytically active coatings. In a second embodiment, the invention is directed to a method of maintaining the polarization of anodes in an electrowinning cell positive of the cathodes (i.e. in a potential region where the anode coating is not susceptible to significant damage). In a final embodiment, the invention is directed to various methods for the installation of replacement anodes and maintenance of electrowinning cells.