Electric lamp and discharge devices – With gas or vapor – Having electrode lead-in or electrode support sealed to...
Patent
1990-07-09
1992-04-21
DeMeo, Palmer C.
Electric lamp and discharge devices
With gas or vapor
Having electrode lead-in or electrode support sealed to...
313332, 313626, 313634, H01J 6130, H01J 6136
Patent
active
051071770
ABSTRACT:
With high-pressure discharge lamps, and, more specifically, ultra high-prure discharge lamps, the electrode shafts (4, 5) are located within cylindrical elongated necks (2, 3) of quartz glass extending from the arc tube (1). To prevent adhesion of quartz from the cylindrical elongated necks (2, 3) of the arc tube (1) upon melt-sealing the necks (2, 3) to the electrode shafts (4, 5), the electrode shafts (4, 5) are surrounded by flexible tissue or fabric hoses, tubes or braids (21, 22), made of highly heat-resistant, electrically insulating inorganic material, for example made of quartz fibers. The tissue hose has an inner diameter which corresponds at least to the outer diameter of the eletrode shaft (4, 5) and is not more than 0.5 mm greater than the electrode shaft. Stray molten material from the necks (2, 3) at the junction or transition zone between the arc tube (1) and the respective necks thus cannot adhere to the electrode shafts, and cracking of the quartz glass in the region of the electrode shafts can be avoided.
REFERENCES:
patent: 2443632 (1948-06-01), Miller
patent: 3259778 (1966-07-01), Fridrich
patent: 3742283 (1973-06-01), Loughridge
patent: 3868528 (1975-02-01), Lake et al.
patent: 4559472 (1985-12-01), Triebel et al.
Barthelmes Clemens
Hohlfeld Andreas
DeMeo Palmer C.
Patent Treuhand Gesellschaft fur elektrische Gluhlampen mbH
LandOfFree
High-pressure discharge lamp does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-pressure discharge lamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-pressure discharge lamp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1589520