Exit sign lamp flashing system with self-checking provisions

Details Exit sign lamp flashing system with self-checking provisions Exit sign lamp flashing system with self-checking provisions

1982-05-10

1985-10-01

Groody, James J.

Communications: electrical

Systems

With specific power supply

320 48, 340516, 340636, 307 66, G08B 100, G08B 2100, H02J 704

Patent

active

045449104

ABSTRACT:
An emergency exit sign auxiliary lamp flashing system operates from self-contained rechargeable batteries upon failure of the electrical power from the AC power mains supplying power to the exit sign, including a charging circuit for recharging the batteries, with provisions for preventing overcharging and for disconnecting the load from the batteries before the battery voltage drops to a level which would impair its service life. Included is a solid state circuit which provides for automatically exercising and self-testing the proper functioning of the system to ensure its being serviceable when called upon to function during a power failure by periodically simulating the effect of a failure of AC power and verifying that the battery, lamp and flashing circuit operate normally or signalling a visual and/or audible alarm if they fail to operate properly.

REFERENCES:
patent: 3384886 (1968-05-01), Serra
patent: 4088986 (1978-05-01), Boucher
patent: 4199754 (1980-04-01), Johnson
patent: 4388615 (1983-06-01), Ford

Affiliated with

Also associated with

Rating

Exit sign lamp flashing system with self-checking provisions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exit sign lamp flashing system with self-checking provisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exit sign lamp flashing system with self-checking provisions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1444835