Concave conical foil-filament lamp

Details Concave conical foil-filament lamp Concave conical foil-filament lamp

1984-12-17

1986-07-01

Moore, David K.

Electric lamp and discharge devices

Electrode and shield structures

Filament or resistance heated electrodes

313343, 313315, H01J 115

Patent

active

045982260

ABSTRACT:
An incandescent electric lamp with a concave conical foil filament suspended by mounting tabs inside a ring conductor between concave conical front and rear bulb walls. Current flows from a center post conductor through the foil filament to the ring conductor to the base. A reflective plate is mounted behind the foil filament to return heat to the filament.

REFERENCES:
patent: 2007939 (1935-07-01), Braselton
patent: 2319338 (1943-05-01), Mulder
patent: 3612942 (1971-10-01), Peyrot
patent: 3775609 (1973-11-01), Dank
patent: 3788721 (1974-01-01), Vause
patent: 4144473 (1979-03-01), Almer

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