Battery operated device with a battery life indicator

A countdown timer for high performance flashlights and similar battery-operated devices that is initialized with a runtime figure equal to the life expectancy of installed linear depletion-curve cells, that is always on and visible, that counts down whenever the flashlight is switched to the ON posi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	EISENSON HENRY LON
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS BLASTING HEATING LIGHTING LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE ORSPECIALLY ADAPTED FOR TRANSPORTATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MECHANICAL ENGINEERING ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS TESTING WEAPONS
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Beschreibung
Zusammenfassung:	A countdown timer for high performance flashlights and similar battery-operated devices that is initialized with a runtime figure equal to the life expectancy of installed linear depletion-curve cells, that is always on and visible, that counts down whenever the flashlight is switched to the ON position, and that displays time remaining until the installed cells/charge are depleted, thus permitting the user to see at a glance the approximate runtime remaining on the installed power supply.