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:
May. 26, 1981
Filed:
Dec. 17, 1979
Applicant:
Inventors:
Assignee:
Varta Batterie Aktiengesellschaft, Hanover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429225 ; 429215 ;
Abstract
For continuous supply of expander material to the negative electrode of a lead storage battery, particularly a quinone derivative, this material is provided within an acid-resistant plastic vessel with an aperture toward the electrolyte, or in a chemically neutral matrix in tablet form. The size of the aperture or the porosity of the chemically neutral matrix so regulates the expander delivery that uniform supply is insured during at least a portion of the life span of the storage battery.