Gas discharge tube having multiple stem pins

Details Gas discharge tube having multiple stem pins Gas discharge tube having multiple stem pins

2005-03-29

2005-03-29

Patel, Vip (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

C313S609000, C313S611000, C313S292000

Reexamination Certificate

active

06873107

ABSTRACT:
In order to obtain light of a high luminance in a gas discharge tube of the present invention, a discharge path is narrowed by a first opening18and a second opening13in collaboration. Further, in order to provide favorable startability in a lamp even when the discharge path is narrowed, a predetermined voltage is applied from the outside to first and second discharge path limiting portions16, 12.As a result, an active starting discharge which is capable of passing through the first and second openings is produced between a cathode portion20and the first and second discharge path limiting portions16, 12,and thus discharge between the cathode portion20and an anode portion8is started speedily. Further, the anode portion, cathode portion, first discharge path limiting portion, and second discharge path limiting portion are housed within a light-emitting portion assembly6and electrically connected by first through fourth stem pins9A to9D, and the stem pins are utilized effectively to support the light-emitting portion assembly.

REFERENCES:
patent: 3501665 (1970-03-01), Heinz et al.
patent: 3508106 (1970-04-01), Lajos
patent: 5886470 (1999-03-01), Smolka
patent: 54-141780 (1979-10-01), None
patent: 06-310101 (1994-11-01), None
patent: 07-326324 (1995-12-01), None
patent: 08-077965 (1996-03-01), None
patent: 08-077969 (1996-03-01), None
patent: 08-077979 (1996-03-01), None
patent: 08-222185 (1996-08-01), None
patent: 08-222186 (1996-08-01), None
patent: 08-236081 (1996-09-01), None

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