Electric incandescent lamp having discharge arc conductor and di

Details Electric incandescent lamp having discharge arc conductor and di Electric incandescent lamp having discharge arc conductor and di

1987-10-08

1990-01-30

Boudreau, Leo H.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For filament

313318, 313274, 313275, 315 91, H01J 188

Patent

active

048975737

ABSTRACT:
The electric incandescent lamp has a filament connected to current supply conductors and kept taut by a frame of longitudinal arc discharge conductors and transverse insulators. The arc discharge conductors are each connected to a point on the current supply conductors, at least one of them being connected through a arc discharge interruption fuse. When switching on and operating the lamp, the arc discharge interruption fuses and the arc discharge conductors are not included in the current circuit. The arc discharge conductors are positioned with respect to the filament so that upon formation of a discharge arc between fragments of the filament the arc flashes over to the arc discharge conductors. Only upon flash over of the arc to the arc discharge conductors does current flow through the arc discharge interruption fuse. The fuse interrupts the current and extinguishes the arc.

REFERENCES:
patent: 2859381 (1956-03-01), Gray et al.
patent: 3173735 (1965-03-01), Fenn
patent: 3441774 (1969-04-01), Stone et al.
patent: 3555338 (1971-01-01), Scoledge
patent: 3796914 (1974-03-01), De Caro et al.
patent: 4084112 (1978-04-01), Hebert et al.
patent: 4278916 (1981-07-01), Regan et al.
patent: 4574217 (1986-03-01), Pendergrass

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