Capped electric lamp

Details Capped electric lamp Capped electric lamp

1995-12-21

1997-08-05

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

31331801, 31331805, 313623, 362255, 439611, H01J 6130, H01K 118, F21M 314

Patent

active

056546084

ABSTRACT:
The capped electric lamp has a glass lamp vessel (1) having first and second neck-shaped portions (2,3). An outer glass envelope (8) has a narrowed portion (9) where it is coupled to the first neck-shaped portion (2). A metal sleeve (10) has a clamping zone (11) which clampingly holds the outer envelope (8), and a welding zone (12) to which tongues (21) of a fixation member (20) which is fixed in a lamp cap (30) are welded. The metal sleeve (10) becomes narrower from the clamping zone (11) towards the first neck-shaped portion (2) up to the welding zone (12).

REFERENCES:
patent: 5216319 (1993-06-01), Van Heeswijk
patent: 5320562 (1994-06-01), Moller et al.
patent: 5378958 (1995-01-01), Van Heeswijk

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