Solder sealed light bulb

Details Solder sealed light bulb Solder sealed light bulb

1975-02-26

1976-04-27

Mullins, James B.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

313315, H01K 138

Patent

active

039537579

ABSTRACT:
The Solder Sealed Light Bulb utilizes a solder exhaust port seal and lead seal combination. Solder glass, or metal solder may be used for the seal material. Evacuation is accomplished in a vacuum furnace. The bulb assembly is evacuated thru the openings at the solder plug, the application of heat liquefies the solder, and surface tension causes the openings to close. Upon cooling, a high vacuum seal is obtained.

REFERENCES:
patent: 3040204 (1962-06-01), Belknap
patent: 3275879 (1966-09-01), Demarest et al.

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