GB1034080A - Improvements in or relating to high pressure metal vapour electric discharge lamps and electrodes therefor - Google Patents
Improvements in or relating to high pressure metal vapour electric discharge lamps and electrodes thereforInfo
- Publication number
- GB1034080A GB1034080A GB648464A GB648464A GB1034080A GB 1034080 A GB1034080 A GB 1034080A GB 648464 A GB648464 A GB 648464A GB 648464 A GB648464 A GB 648464A GB 1034080 A GB1034080 A GB 1034080A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- pinch
- discharge lamps
- relating
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
1,034,080. Discharge lamps. GENERAL ELECTRIC CO. Ltd. Jan. 19, 1965 [Feb. 17, 1964], No. 6484/64. Heading H1D. Electrodes for a highpressure lamp are manufactured by forming a pinch 14 in a tungsten rod 16 such that its sides project out beyond the periphery of the wire, introducing a pellet of sintered alkaline earth metal oxide on to one or each flat of the pinch, and pushing over the projecting portions of the pinch a tungsten helix to maintain the pellets in position. The electrodes are employed in a lamp (Figs. 1 and 2, not shown), having a filling of mercury, and argon at a pressure of a few torr., supported in an outer phosphorcoated envelope. An auxiliary starting electrode adjacent one of the main electrodes is connected via a resistance within the outer envelope to the other main electrode.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB648464A GB1034080A (en) | 1964-02-17 | 1964-02-17 | Improvements in or relating to high pressure metal vapour electric discharge lamps and electrodes therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB648464A GB1034080A (en) | 1964-02-17 | 1964-02-17 | Improvements in or relating to high pressure metal vapour electric discharge lamps and electrodes therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1034080A true GB1034080A (en) | 1966-06-29 |
Family
ID=9815342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB648464A Expired GB1034080A (en) | 1964-02-17 | 1964-02-17 | Improvements in or relating to high pressure metal vapour electric discharge lamps and electrodes therefor |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1034080A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995030237A1 (en) * | 1994-05-03 | 1995-11-09 | Philips Electronics N.V. | High-pressure discharge lamp |
EP0756311A1 (en) * | 1995-07-28 | 1997-01-29 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Electrode coil for discharge lamps and process for prodcucing such an electrode coil |
EP0700070A3 (en) * | 1994-09-01 | 1998-03-25 | Osram Sylvania Inc. | Cathode for high intensity discharge lamp |
-
1964
- 1964-02-17 GB GB648464A patent/GB1034080A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995030237A1 (en) * | 1994-05-03 | 1995-11-09 | Philips Electronics N.V. | High-pressure discharge lamp |
US5793161A (en) * | 1994-05-03 | 1998-08-11 | U.S. Philips Corporation | High-pressure discharge lamp electrode |
CN1090809C (en) * | 1994-05-03 | 2002-09-11 | 皇家菲利浦电子有限公司 | High-pressure discharge lamp |
EP0700070A3 (en) * | 1994-09-01 | 1998-03-25 | Osram Sylvania Inc. | Cathode for high intensity discharge lamp |
EP0756311A1 (en) * | 1995-07-28 | 1997-01-29 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Electrode coil for discharge lamps and process for prodcucing such an electrode coil |
US5729081A (en) * | 1995-07-28 | 1998-03-17 | Osram Sylvania Inc. | Electrode coil for discharge lamps and method for producing such an electrode coil |
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