Ceramic lamp seal and control of sealing frit distribution

Details Ceramic lamp seal and control of sealing frit distribution Ceramic lamp seal and control of sealing frit distribution

H - Electricity

01

J

313/135

H01J 61/30 (2006.01) H01J 61/36 (2006.01) H01J 61/52 (2006.01)

Patent

CA 1073513

LD-6795 ABSTRACT OF THE DISCLOSURE A metal vapor arc lamp includes an alumina ceramic arc tube having an end closed by an apertured ceramic plug sealed by sealing frit. A metal wire inlead extending through the aperture is also sealed therein by sealing frit and supports an electrode within the arc tube. A cross wire attached to the inlead immediately above the plug forms a wick, equalizing the distribution of sealing frit between the plug seal and the inlead seal. The cross wire also serves as a hanger for supporting the plug and electrode assembly in the arc tube during sealing.

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