Blackout backup for traffic light

Details Blackout backup for traffic light Blackout backup for traffic light

1997-10-09

1999-04-27

Hofsass, Jeffery A.

Communications: electrical

Traffic control indicator

340912, 340916, 340925, 340931, G08G 1095

Patent

active

058983899

ABSTRACT:
A system and method for automatically supplying a flashing line voltage from power stored in an auxiliary battery to power red traffic signal lamps using clusters of light emitting diodes during a blackout condition. A plurality of flash block connectors are pin-to-pin compatible with the flash block jumper blocks of an already installed traffic light control system so that the existing system is retrofitted without any cabinet or field rewiring or any cutting or crimping of the wires.

REFERENCES:
patent: 3795905 (1974-03-01), Wright
patent: 4068216 (1978-01-01), Brouwer et al.
patent: 4954822 (1990-09-01), Borenstein
patent: 5136287 (1992-08-01), Borenstein
patent: 5457450 (1995-10-01), Deese et al.
patent: 5663719 (1997-09-01), Deese et al.

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