Electric lamp having an outer bulb

Details Electric lamp having an outer bulb Electric lamp having an outer bulb

2005-11-21

2009-11-03

Won, Bumsuk (Department: 2889)

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

C313S025000, C313S493000, C313S573000, C313S623000

Reexamination Certificate

active

07612503

ABSTRACT:
The elongate inner bulb (1) defines a longitudinal axis (A) and is sealed at mutually opposing ends by sealing parts (6; 32), an outer bulb being placed, with an adjoining tube piece, over the inner bulb and being fixed to the sealing part by means of an annular beading formed there, the end of the tube piece being radially attached to the beading, the maximum inner diameter of the beading being larger than the outer diameter of the sealing part in the region of the beading.

REFERENCES:
patent: 6790115 (2004-09-01), Fukai et al.
patent: 2002/0063529 (2002-05-01), Fukai et al.
patent: 2002/0084755 (2002-07-01), Ohshima et al.
patent: 2002/0105272 (2002-08-01), Takagaki et al.
patent: 2003/0062839 (2003-04-01), Takagaki et al.
patent: 2004/0150344 (2004-08-01), Takagaki et al.
patent: 0 465 083 (1992-01-01), None
patent: 0 588 602 (1994-03-01), None
patent: WO 95/32516 (1995-11-01), None

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