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. 12, 1980
Filed:
Jun. 08, 1978
Edward J Seger, Apollo, PA (US);
Warren E Haupin, New Kensington, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
A method of operating an electrolytic cell having a corrosive environment. For electrolytic operation, the cell is supplied with DC current from current carrying buses or leads located externally of the cell. AC voltage is applied between the shell and at least one of the buses, and an AC meter is electrically connected between the bus and the shell for continuously monitoring the level of electrical resistance existing between the bus and the shell. The resistance monitoring determines the existence of any leakage current flowing between the bus and the shell, which is, in turn, an indication of the quality of the insulating wall of the cell.