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:
Nov. 23, 1976
Filed:
Apr. 29, 1974
Applicant:
Inventors:
Assignee:
Ebauches S.A., Neuchatel, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340249 ; 58 2 / ; 324 295 ; 3402 / ;
Abstract
The present invention relates to an indicator for the condition of a battery and more particularly for a battery with voltages between 1 and 3 Volts. The indicator comprises an electronic device in which a stable reference voltage is provided by a semi-conductor device compensated in temperature by the combination of a diode voltage with a multiple of the difference between two other diode voltages, and a positive feedback circuit which drives a passive display device according to the condition of the battery.