Dedicated transfer switch for a single electrical load, such as

Details Dedicated transfer switch for a single electrical load, such as Dedicated transfer switch for a single electrical load, such as

1998-08-05

2000-09-19

Hofsass, Jeffery A.

Communications: electrical

Traffic control indicator

3406932, G08G 1095

Patent

active

061218979

ABSTRACT:
A transfer switch is connected to an electric traffic signal for switching power from an electrical utility source to a generator power source in the event of an interruption in the electrical utility source. The transfer switch includes an enclosure operably connected to the traffic signal and having a power input receptacle cooperable with a selector switch. The power input receptacle selectively receives the generator power source and supplies generator power to the traffic signal, while the selector switch selects the source of electrical power to the traffic signal and effects a cut off in the supply of power to the traffic signal.

REFERENCES:
patent: 2229729 (1941-01-01), Emle
patent: 2865017 (1958-12-01), Heikes
patent: 2997691 (1961-08-01), Stoll
patent: 3041420 (1962-06-01), Berry et al.
patent: 3641487 (1972-02-01), Rogers et al.
patent: 4013849 (1977-03-01), Brown
patent: 5208584 (1993-05-01), Kaye et al.
patent: 5486664 (1996-01-01), Lamp et al.
patent: 5612596 (1997-03-01), Wiese
patent: 5659305 (1997-08-01), Rains et al.
patent: 5898389 (1999-04-01), Deese et al.

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