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:
Oct. 09, 1990
Filed:
Feb. 25, 1988
Applicant:
Inventors:
James R Burroughs, Encino, CA (US);
Alan N O'Kain, Corona del Mar, CA (US);
Assignee:
Strategic Energy, Ltd., Newport Beach, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
320 48 ; 340636 ; 362208 ;
Abstract
A flashlight or a portable lantern having a built-in battery tester to determine the voltage or capacity of the battery, either under an electrical load or under no electrical load. The battery tester can comprise a voltmeter, ammeter, liquid-crystal cell, LED, color-indicating redox voltage-indicator cell, or a voltage battery-monitoring circuit that intermittently monitors the voltage of the batteries for brief pulses, compares the battery voltage with the standard reference voltage, and initiates a signal system if the battery voltage falls below the standard reference voltage.