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:
Jul. 13, 1982
Filed:
Sep. 22, 1980
Applicant:
Inventors:
Richard W Peterson, Lower Burrell, PA (US);
Perry A Foster, Jr, New Kensington, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C / ; C25C / ; C25C / ;
U.S. Cl.
CPC ...
2042 / ; 204 67 ; 204280 ; 204294 ;
Abstract
A cathode for an electrolytic cell operated at elevated temperature, the cathode comprising a refractory hard metal (RHM) body embedded in a carbonaceous base. The cathode is provided with an intermediate layer of fibrous material between a side wall of a seat in the base and a wall segment of the RHM body. The layer preferably comprises low-density carbon felt, and the layer prevents breakage of the RHM body by providing a cushion against differential thermal expansion and contraction of the base and body, especially during cell start-up.