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:
Mar. 17, 1987
Filed:
Oct. 03, 1984
Applicant:
Inventors:
Rolf Brenner, Rainau, DE;
Horst-Udo Jose, Fichtenau, DE;
Gerd Jung, Ellwangen-Rindelback, DE;
Robert Koder, Ellwangen-Rotenbach, DE;
Assignee:
Varta Batterie A.G., Hanover, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ; H01M / ;
U.S. Cl.
CPC ...
429129 ; 429144 ; 429145 ; 429133 ; 429 94 ; 429251 ; 429252 ;
Abstract
In view of operating temperatures above 100.degree. C., a silver oxide/zinc cylindrical cell is provided with a housing cup which is enclosed by a sealing element formed of PTFE, and which incorporates a double-layer separator whose inner layer is formed of a semi-permeable ion exchange membrane and whose outer layer is formed of a flexible ceramic material. The element is protected against extreme overpressure, in excess of 65 bar, by a rupture line in the form of an indentation in the bottom of the cup.