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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.:

US 4642600 B1

PDFFull Text
Date of Patent:
Feb. 10, 1987

Filed:

Apr. 02, 1985

Device for indicating the fully charged state of a battery

Applicant:
Inventors:

Klaus Gummelt, Garbsen, DE;

Jurgen Schulz, Hunstetten, DE;

Klaus Salamon, Kelkheim, DE;

Heinrich Rabenstein, Frankfurt, DE;

Assignee:

Varta Batterie A.G., Hanover, DE;

Attorney:

Weiser & Stapler

Primary Examiner:

E A Goldberg

Assistant Examiner:

Linda M Peco

Int. Cl.
CPC ...
H01L / ; H02J / ;
U.S. Cl.
CPC ...
338 34 ; 320 35 ; 320 48 ;
Abstract

The temperature rise associated with the catalytic recombination of battery gases at the end of the charging process is converted into an electrical signal suitable for checking and controlling charging, in a temperature-sensitive component such as a commercially available NTC or PTC resistor coated with a PTFE-bound palladium-activated carbon mixture. An additional activated carbon layer protects the catalyst from poisoning by the stibine present in the battery gases.

Find Patent Forward Citations

Gummelt, Klaus. (1987). Device for indicating the fully charged state of a battery (U.S. Patent No. 4642600). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4642600

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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