Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 19, 2010
Patent Application Number
11897824
Date Filed
August 31, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A self-contained, rechargeable LED flashlight uses a zener diode in reverse-breakdown avalanche mode as a low-cost voltage regulator. A second embodiment of the LED flashlight incorporates boost-buck circuitry to allow the internal rechargeable flashlight battery to be recharged through external dry cells. An LED or LED array of the flashlight may be by passed with operator control to allow an internal battery to operate an external device, such as a cellular telephone or the like.
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