Lamp envelope with a metal clamping member and a fixation member

Details Lamp envelope with a metal clamping member and a fixation member Lamp envelope with a metal clamping member and a fixation member

1996-05-02

1998-04-21

Patel, Ashok

Electric lamp and discharge devices

With envelope

Having base and connector

31331809, H01J 548

Patent

active

057421145

ABSTRACT:
The capped electric lamp has a quartz glass lamp vessel (1) having first and second neck-shaped portions (2,3) with respective seals (4,5). A glass envelope (9) surrounds the lamp vessel and is secured thereto. A clamping member (20) surrounds the envelope in a clamping manner. A fixation member (32) of a lamp cap (30) is welded to the clamping member. The clamping member (20) is an undulated metal body, the crests of its creases constituting regions (22) which are spaced from the envelope (9) and in which welds to the fixation member (32) are made. Its troughs constitute clamping zones (21) which hold the envelope. The clamping member (20) allows for the application of a relatively wide envelope (9), which may enter the lamp cap (30).

REFERENCES:
patent: 4950942 (1990-08-01), Braun et al.
patent: 5216319 (1993-06-01), Van Heeswijk
patent: 5320562 (1994-06-01), Moller et al.
patent: 5378958 (1995-01-01), Van Heeswijk
patent: 5412275 (1995-05-01), Dorsemagen et al.
patent: 5461277 (1995-10-01), Van Gennip et al.
patent: 5479066 (1995-12-01), Willems et al.

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