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. 10, 1990
Filed:
Aug. 14, 1987
Applicant:
Inventors:
Sadashiv K Nadkarni, Jonquiere, CA;
Lise Castonguay, Chicoutimi-Nord, CA;
Assignee:
Alcan International Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252511 ; 252502 ; 2042 / ; 524495 ; 524496 ;
Abstract
A cement for collector bar-carbon block joints of electrolytic cells, particularly for cells used for the production of aluminum. The cement comprises an aggregate of calcined anthracite or an anthracite/graphite mixture, a settable liquid polymeric binder and a curing agent for causing the binder to set. The cement is formulated so that it has a linear shrinkage of about 0.3 to 1.5% when exposed to the operating temperatures of the cell. The cement maintains a good electrical connection between the collector bar and carbon block without causing cracking of the block or of the cement.