Mercury capsule support

Details Mercury capsule support Mercury capsule support

1988-12-27

1990-05-08

Yusko, Donald J.

Electric lamp and discharge devices

With frangible capsule containing getter, gas or vapor...

313549, 313561, 313554, 313565, 313490, H01J 6128

Patent

active

049241451

ABSTRACT:
A lamp including a fill gas with a mercury component may be safely dosed with mercury by including at least one mercury capsule in the envelope for subsequent opening by radiant means to dose the closed envelope with mercury. A spring coil or similar means may be used for supporting the capsule in a tubular envelope at a position independent of and separated from the press-seal area. The support means generally comprises a compression positioning member, preferably in the form of a coil spring, having the capsule or capsules secured thereto and further having an uncompressed state prior to insertion in the envelope and a compressed state upon insertion in the envelope for retention of the compression positioning member and as a result, the mercury capsule, in a substantially fixed position in the envelope. Once the capsule is in position, the lamp may be safely closed, and the capsule opened by inductive, or other radiant heating.

REFERENCES:
patent: 3634717 (1972-01-01), Boucher et al.
patent: 3913999 (1975-10-01), Clarke
patent: 4534742 (1985-08-01), Grossman et al.
patent: 4539508 (1985-09-01), Mulder et al.

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