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. 19, 1991
Filed:
Nov. 15, 1989
Applicant:
Inventors:
Horst-Udo Jose, Ellwangen, DE;
Gerd Jung, Ellwangen, DE;
Assignee:
Varta Batterie Aktiengesellschaft, Hanover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H07M / ;
U.S. Cl.
CPC ...
429190 ; 429229 ;
Abstract
In an acid-type primary cell with a zinc anode containing non-toxic or only little harmful substances, the usual toxic components of the zinc alloy such as mercury and cadmium are replaced by at least one of the elements indium and bismuth, and by at least one of the elements magnesium and lithium. These nonpoisonous substitutes inhibit hydrogen on the zinc and provide a degree of mechanical tensile strength with more conventional zinc anodes. Additionally, a slight amount of lead is alloyed with the zinc anode to maintain ductility during the rolling process and as a supplemental protection against corrosion.