Microprocessor-controlled insertable flashlight adapter device

Details Microprocessor-controlled insertable flashlight adapter device Microprocessor-controlled insertable flashlight adapter device

2007-04-02

2009-08-25

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Discharge device and/or rectifier in the supply circuit

Flashers

C315S224000, C315S24100S

Reexamination Certificate

active

07579783

ABSTRACT:
An insertable flashlight adapter device for use in an ordinary flashlight having a lamp includes a disc-like shaped housing unit. Electronic circuitry is disposed within the housing unit for selectively operating the flashlight in at least three different modes. The electronic circuitry has a voltage comparator for determining which one of the at least three different modes the flashlight is being operated. The electronic circuitry also has logic and control means for selectively interrupting current to the flashlight lamp so as to cause the at least three different modes of operation. The logic and control means includes a first timer for monitoring a first time interval between mode changes in the voltage comparator and a second timer for monitoring a second time interval between a power-ON and power-OFF state of the flashlight lamp. As a result, the adapter device has eliminated the need of modifications to make an ordinary flashlight operate selectively in the different modes of operation and to maintain the lifespan of the original ON-OFF switch.

REFERENCES:
patent: 5498934 (1996-03-01), Nilssen

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