Single-based high-pressure discharge lamp particularly for autom

Details Single-based high-pressure discharge lamp particularly for autom Single-based high-pressure discharge lamp particularly for autom

1995-06-27

1997-05-06

O'Shea, Sandra L.

Electric lamp and discharge devices

With envelope

Having base and connector

31331809, 3133181, 439611, H01J 548, F21M 700

Patent

active

056274289

ABSTRACT:
To reliably and simply connect one end of a double-ended discharge vessel it (1) and a surrounding envelope (11) to a base (8), the base has a base sleeve (8a) which encloses a base holder portion (8b). The envelope (11) is melt-connected to the discharge vessel unit (1), for example just beyond pinch seals formed thereon, and is additionally formed with an extension (11a) which is, in turn, melt-connected to the holder portion (8b) of the base. Preferably, a metallic cuff is placed within the holder portion so that, by high-frequency inductive heating, a reception region (8d) of the holder portion can melt and tightly grip the extension (11a) of the envelope. To improve adhesion, the surface of the extension region (11a) may be ribbed, knurled or otherwise, slightly deformed.

REFERENCES:
patent: 4795939 (1989-01-01), Eckhardt et al.
patent: 5253153 (1993-10-01), Mathews et al.
patent: 5270610 (1993-12-01), Schoenherr et al.
patent: 5428261 (1995-06-01), Wittig et al.
patent: 5495138 (1996-02-01), Behr et al.

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