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:
Apr. 25, 1989
Filed:
Dec. 02, 1987
Richard W Peterson, Lower Burrell, PA (US);
Donald C Fisher, Lower Burrell, PA (US);
John W Luffy, New Kensington, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
An improved electrode for an electrolytic reduction cell is disclosed which comprises a nonmetallic electrode having a top surface, a central bore in the top surface, a central metal current source comprising a metal shaft or rod in the central bore, and side bores extending from the central bore toward the sides of the electrode having metallic portions therein to provide lateral current distribution from the central current source. In a preferred embodiment, the side bores are filled with metal in situ by pouring molten metal such as cast iron into the central bore to lock the central shaft in place wherein the molten metal will flow, during such filling, into the side bores to provide intimate contact with the sidewalls of side bores to provide improved lateral current distribution from the central current source across said electrode.