Apparatus flashing lights in sequences indicating directions...

Details Apparatus flashing lights in sequences indicating directions... Apparatus flashing lights in sequences indicating directions...

2006-04-11

2006-04-11

Vu, David (Department: 2828)

Electric lamp and discharge devices: systems

Plural series connected load devices

Christmas lights

C315S193000, C315S20000A

Reexamination Certificate

active

07026768

ABSTRACT:
A direction-indicating device includes a control unit, which is plugged into an external power source, and a number of interconnected lights, extending in a first direction. When the external power source fails, the lights are flashed, using power from a battery in the control unit, in a sequence indicating a preferred direction of movement. The control unit may also charge the battery from the external power source, and the lights may additionally be flashed in response to a signal indicating that fire conditions exist. The direction indicated by the lights may be reversed, based on a combination of alarm units transmitting fire detection signals.

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