Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1989-12-28
1991-10-08
Yusko, Donald J.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313573, 313623, 313624, 313634, 362377, H01J 1716, H01J 6134, H01J 6152
Patent
active
050557351
ABSTRACT:
The high pressure discharge lamp has containment structure in the outer envelope which encloses the discharge vessel. The containment structure consists of a glass cylindrical sleeve closed at its ends by a metal plate. The plates, the cylindrical sleeve and the discharge vessel are combined as a subassembly. The metal plates are provided with tongues bearing on the glass cylindrical sleeve and the outer envelope. The lamp has a flexible conductor which extends from the current lead-through conductor remote from the stem to the lamp stem and bears on the outer envelope. The containment structure prevents failure of the outer lamp envelope in the event of explosive failure of the discharge vessel.
REFERENCES:
patent: 4281274 (1981-07-01), Bechard et al.
patent: 4539510 (1985-09-01), Bouchard
patent: 4625140 (1986-11-01), Gagnon
patent: 4721876 (1988-01-01), White et al.
Bens Florentinus L. M.
De Jong Tjitte
Hermans Danny L. V.
Patel Ashok
U.S. Philips Corporation
Wieghaus Brian J.
Yusko Donald J.
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