Compact fluorescent lamp and method of making

Details Compact fluorescent lamp and method of making Compact fluorescent lamp and method of making

1978-12-14

1980-04-01

Smith, Alfred E.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Discharge device load

29 2513, 316 19, 316 20, 313204, H01J 1734, H01J 6110, H01J 918, H01J 938

Patent

active

041963741

ABSTRACT:
A compact fluorescent lamp comprises a substantially cylindrical, tapered envelope with a correspondingly tapered partition disposed within the envelope so as to define a folded discharge path having a length approximately twice the length of the envelope. The taper of the partition and envelope permit easy assembly of the lamp with minimal disturbance of a prior applied phosphor coating. In accordance with one embodiment of the present invention, the partition is formed using shaping wedges applied to a partially molten glass bulb so as to produce a seamed partition extending almost to the closed end of the bulb. The partition in the lamps of the present invention sealably separate one discharge path portion from another.

REFERENCES:
patent: 1974888 (1934-09-01), Barclay
patent: 3024383 (1962-03-01), Doering
patent: 4095135 (1978-06-01), Yamazaki et al.
patent: 4117374 (1978-09-01), Witting
patent: 4147951 (1979-04-01), Mueller

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