Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Reexamination Certificate
2006-10-17
2006-10-17
Callahan, Timothy P. (Department: 2816)
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
C313S631000
Reexamination Certificate
active
07122953
ABSTRACT:
A high-pressure discharge lamp includes a discharge vessel having a wall of a ceramic material. The lamp also includes at least a feedthrough of an electrode having a cermet rod. The cermet rod is connected at a first end to a first end of a predominantly tungsten electrode pin by a welded joint. The electrode pin is in line with the cermet rod and has, at its first end, a solidified tungsten melt that is located near the interface between electrode pin and cermet rod.
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Callahan Timothy P.
Koninklijke Philips Electronics , N.V.
Nguyen Hai L.
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