Patent ID: 6184794
Filing Date: 2001-02-06
Classification: F21L,G01R,H01M,Y02E

Abstract:
A flashlight battery tester comprising in combination:a flashlight housing made from a dielectric material and having first and second terminals, each electrically connected to one pole of at least one battery disposed within said housing; anda battery tester circuit mounted generally flush to an exterior surface of said flashlight housing and having:a conductive film, a first end of said film electrically connected to said first terminal, and a second end of said film defining a first switch biased above and flexibly engageable with said second terminal to permit a current to pass through said conductive film, and produce a signal indicative of the strength of said at least one battery,a flexible, dielectric layer having opposing sides,a conductor layer having a variable resistance portion disposed on one side of said flexible dielectric layer,a protective layer disposed on an opposite side of said flexible dielectric layer,an indicator layer disposed between said protective layer and said flexible dielectric layer and aligned substantially opposite said variable resistance portion of said conductor layer,an adhesive layer disposed on said conductor layer and said flexible dielectric layer for adhering said flashlight battery tester to said flashlight housing, anda switch for placing said second end of said conductor in electrical contact with said second terminal to activate said battery tester display circuit, wherein said switch includes:a spring disposed over said second terminal between said conductor layer and said second terminal;a conductive plunger disposed within said spring and having a first end in electrical contact with said conductor layer and the opposite end of said plunger translatable into contact with said second terminal.