Lamp-starting device

Details Lamp-starting device Lamp-starting device

1975-11-26

1977-01-25

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Electric switch in the supply circuit

315 71, 315107, 338219, H05B 3902

Patent

active

040053385

ABSTRACT:
A lamp-starting device for use in a lamp socket adapted to receive the base of a lamp, the device having a pair of electrically-conductive plates disposed in spaced relation in and electrically insulated from each other by a housing of electrically insulating material. An electrical resistor is located between and electrically connects the plates, the resistor being in the circuit when the lamp is initially energized. A temperature-responsive bimetal strip is located between the plates, the bimetal strip having a contact movable into engagement with a contact on one of the plates when the bimetal strip is heated by conductive heat from the resistor, lamp base and socket to by-pass the resistor in the circuit after initial energization, the bimetal strip being electrically connected to the other of the plates. The bimetal strip includes a loop disposed about the resistor and engaging the other plate and engaging an electrically-insulating member disposed between the plates.

REFERENCES:
patent: 2110690 (1938-03-01), Zierahn
patent: 2550169 (1951-04-01), Sokoloff
patent: 3868540 (1975-02-01), Passmore et al.

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