Method and apparatus for press sealing an arc tube body section

Details Method and apparatus for press sealing an arc tube body section Method and apparatus for press sealing an arc tube body section

1980-12-24

1982-03-16

Fisher, Richard V.

Glass manufacturing

Processes

Fusion bonding of glass to a formed part

65 5928, 65108, 65154, 65155, 65156, 65276, 65280, C03C 2702

Patent

active

043199062

ABSTRACT:
A method and apparatus for press sealing a tubular quartz arc tube body section about a ribbon-type metallic seal. The method includes applying different intensities of heat to the quartz arc tube body section to be pressed in such a manner that four portions of the quartz arc tube body section which are located within diametrically opposed quadrant sections are heated to a higher softened-state temperature than those portions of the heated quartz arc tube body which are positioned intermediate the higher-heated quartz arc tube body portions, with the higher-heated quartz arc tube body portions collapsing somewhat due to the surface tension of the softened quartz. Utilizing this method results in an improved press seal.

REFERENCES:
patent: 1872070 (1932-08-01), McCabe et al.

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