Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1993-03-09
1995-04-18
Yusko, Donald J.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313 1, 313238, 313252, 313284, 313285, 313292, 313623, 313624, H01J 102
Patent
active
054081572
ABSTRACT:
A high pressure discharge lamp includes a pair of arc tubes connected electrically in parallel within an outer envelope, which includes a lamp stem having a pair of stem conductors entering the lamp envelope in a common plane. The arc tubes include conductive feed-throughs at each end thereof. A lamp frame supports the arc tubes in a plane parallel with the stem conductors and is welded directly to each of the feed-throughs with all welds in a common plane with the welds between the frame and the stem conductors. The frame includes a resiliently deformable transverse member which allows for independent changes in length of the arc tubes during lamp operation due to thermal expansion/contraction. The frame is free of slip fit connections with the feed-throughs and free of additional conductive straps connected to the feed-throughs.
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Alderman John C.
Bernard Kathleen P.
Dubowicz Louis B.
King Norman
Putnam Edward A.
Horri Ali
North American Philips Corporation
Wieghaus Brian J.
Yusko Donald J.
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