Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1992-04-10
1994-03-22
Yusko, Donald J.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313634, H01J 6130
Patent
active
052967794
ABSTRACT:
A double-ended arc discharge lamp includes a sealed, light-transmissive outer jacket, a light-transmissive shroud mounted within the outer jacket and directly supported by the outer jacket, and an arc discharge tube mounted within the shroud. The arc tube is typically a metal halide arc discharge tube. In a preferred embodiment, the shroud includes an outwardly flared portion at each end. The outwardly flared portions space the shroud from the outer jacket and support the shroud within the outer jacket. The outwardly flared portions of the shroud can be affixed to the outer jacket by fusing. The outer jacket can be provided with inwardly extending dimples for locating the shroud with respect to the outer jacket. In another embodiment, the outer jacket includes reduced diameter portions near each end which are attached to the shroud.
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Esserman Matthew J.
GTE Products Corp.
McNeill William H.
Romanow Joseph S.
Yusko Donald J.
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