Universal burning ceramic lamp

Details Universal burning ceramic lamp Universal burning ceramic lamp

1980-05-02

1982-08-03

Anderson, Bruce C.

Electric lamp and discharge devices

Liquid electrode discharge devices

Auxiliary starting or holding electrode

313217, H01J 6122

Patent

active

043429394

ABSTRACT:
A high pressure alkali metal vapor lamp envelope of alumina ceramic having wire inleads sealed into opposite ends and no external amalgam reservoir, has an internal amalgam retention compartment for reducing sensitivity to shock and vibration. The compartment is formed by a metal partition substantially coextensive with the end wall and spaced from it a distance within the range of capillary attraction for the amalgam used. A preferred construction uses for the partition an apertured niobium disc fitting snugly in the alumina arc tube.

REFERENCES:
patent: 3723784 (1973-03-01), Sulcs et al.
patent: 3825788 (1974-07-01), Pfaue et al.
patent: 3892993 (1975-07-01), Timmermans
patent: 4034252 (1977-07-01), McVey
patent: 4035682 (1977-07-01), Bubar
patent: 4065691 (1977-12-01), McVey

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