Utility emergency lamp and solid state switching and battery cha

Details Utility emergency lamp and solid state switching and battery cha Utility emergency lamp and solid state switching and battery cha

1981-04-01

1983-10-18

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Automatic substitution of the power supply

With load device or electrode substitution

307 66, 315 65, 315 67, 315 92, 362 20, 362211, H05B 3910

Patent

active

044108354

ABSTRACT:
The power/switcher module, bi-filament light bulb, and light bulb socket, of this invention are assembled with standard lamp industry hardware and fittings to provide a lamp fixture with conventional utility increased by the addition of an integrated automatic emergency lighting capability. Normal ON/OFF use of the lamp, while connected to household line current, also provides light bulb filament current for maintaining a full charge on a rechargeable storage battery. The loss of charging current through line current power failure, filament burn out, or selective disconnection by removal of the portable cord, immediately switches on the other filament to battery power, extending the emergency use to that of a portable lantern. Restoration of line current and/or a burned out filament automatically reverts the lamp to normal operation. The foregoing capabilities are made available in practical quantitive measure, less than costly and bulky industrial and commercial units, but substantially more than the very limited usefulness available from existing household plug-in, receptacle mounted counterparts.

REFERENCES:
patent: 3573541 (1971-04-01), Dunn et al.
patent: 3976986 (1976-08-01), Zabroski

Affiliated with

Also associated with

Rating

Utility emergency lamp and solid state switching and battery cha does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Utility emergency lamp and solid state switching and battery cha, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Utility emergency lamp and solid state switching and battery cha will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1291913