Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1993-09-24
1995-03-28
Yusko, Donald J.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313573, 313634, 313324, 313642, H01J 6150, H01J 6135
Patent
active
054020336
ABSTRACT:
The electric discharge lamp has a discharge vessel, which is mounted in an outer bulb. A containment shield surrounds the discharge vessel and includes a glass sleeve and a helically coiled wire about the sleeve. Electrically isolated clamping leads extending from the seals axially secure the glass sleeve about the discharge vessel so that it is electrically isolated. The wire is fixed around the sleeve in an electrically floating manner, e.g. by clamping fit and/or by bent end portions secured over the ends of the glass sleeve. The construction of the lamp is simple and effective to protect the outer bulb from being damaged by an explosion of the lamp vessel and to prevent accelerated sodium depletion from the discharge vessel.
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patent: 4950938 (1990-08-01), Ramaiuh
patent: 4963790 (1990-10-01), White et al.
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patent: 5043623 (1991-08-01), Scholz et al.
patent: 5136204 (1992-08-01), Muzeroll etal.
Canale Joseph E.
Morris Thomas W.
Pragt Henrikus J. H.
van der Leeuw Bart
Patel Ashok
Philips Electronics North America Corporation
Wieghaus Brian J.
Yusko Donald J.
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