Compact fluorescent lamp having bulb base

Details Compact fluorescent lamp having bulb base Compact fluorescent lamp having bulb base

1985-10-30

1987-02-17

Moore, David K.

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313493, 313 25, H01J 6134

Patent

active

046442243

ABSTRACT:
A low-pressure mercury vapor discharge lamp according to the invention is comprised of a large-stem composed of a flare part and a pinch part to which two pairs of lead wires are pinch-sealed, filament coils mounted between ends of the pairs of lead wires, respectively, two inner tubes each of which is pinch-sealed to the pinch part of the flare-stem with one end opened and the other end enclosing each of the filament coils and is bent in a predetermined shape, and a glass lamp envelope having an end portion sealed to the flare part for forming an air-tight space while enclosing the inner tubes.

REFERENCES:
patent: 2001501 (1935-05-01), Ruttenauer et al.
patent: 4199708 (1980-04-01), Lauwerijssen et al.
patent: 4275325 (1981-06-01), Guim
patent: 4441050 (1984-04-01), Steeger et al.

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