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GB810301A - Improvements in electrodes for fluorescent electric discharge lamps - Google Patents

Improvements in electrodes for fluorescent electric discharge lamps

Info

Publication number
GB810301A
GB810301A GB21297/55A GB2129755A GB810301A GB 810301 A GB810301 A GB 810301A GB 21297/55 A GB21297/55 A GB 21297/55A GB 2129755 A GB2129755 A GB 2129755A GB 810301 A GB810301 A GB 810301A
Authority
GB
United Kingdom
Prior art keywords
july
conductor
electrodes
electric discharge
fibrous material
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
Application number
GB21297/55A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB810301A publication Critical patent/GB810301A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode

Landscapes

  • Discharge Lamp (AREA)

Abstract

810,301. Thermionic cathode contructions, materials and processing. GENERAL ELECTRIC CO. July 22, 1955 [July 22, 1954]. No. 21297/55. Class 39(1). An electrode for a fluorescent discharge lamp comprises a cup-shaped heat-insulating structure consisting of an outer cylindrical shiny metal shield 5 open at one end and lined with co-axial spaced cylindrical hollow sleeves 10 separated by projections 21, the structure being filled with a mass of wool-like fibrous steel, nickel or tungsten 11 coated with electron emissive material and electrically connected with a lead-in conductor 3. The fibrous material 11 is bonded to the conductor 3 by heating them in contact in a hydrogen furnace. A carbonate is applied to the fibrous material by dipping and reduced to oxide by inductionheating of the shield 5 during the lamp exhaust operation.
GB21297/55A 1954-07-22 1955-07-22 Improvements in electrodes for fluorescent electric discharge lamps Expired GB810301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US444939A US2888592A (en) 1954-07-22 1954-07-22 Cathode structure

Publications (1)

Publication Number Publication Date
GB810301A true GB810301A (en) 1959-03-11

Family

ID=23766983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21297/55A Expired GB810301A (en) 1954-07-22 1955-07-22 Improvements in electrodes for fluorescent electric discharge lamps

Country Status (3)

Country Link
US (1) US2888592A (en)
FR (1) FR1137405A (en)
GB (1) GB810301A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149253A (en) * 1962-01-03 1964-09-15 Gen Electric Electrode structure from magnetohydrodynamic device
US3165652A (en) * 1962-07-16 1965-01-12 Gen Electric Electrode structure for a magnetohydrodynamic device
US3210518A (en) * 1962-12-21 1965-10-05 Alloyd Electronics Corp Hollow cathode device
US3421039A (en) * 1966-01-03 1969-01-07 Hughes Aircraft Co Thermionic cathode having emissive material and metallic paths which sputter away at the same rate
US3413510A (en) * 1966-01-24 1968-11-26 Nasa Usa Electronic cathode having a brush-like structure and a relatively thick oxide emissive coating
US3623136A (en) * 1968-05-10 1971-11-23 Hitachi Ltd Light-source lamp for atomic light-absorption analysis
US3813571A (en) * 1973-04-09 1974-05-28 Hughes Aircraft Co Insulated cathode gun device
US3814974A (en) * 1973-04-09 1974-06-04 Hughes Aircraft Co Cathode gun device
TW270211B (en) * 1993-03-17 1996-02-11 Tdk Electronics Co Ltd
EP0738423B1 (en) * 1994-11-08 1999-01-13 Koninklijke Philips Electronics N.V. Low-pressure discharge lamp
US5856726A (en) * 1996-03-15 1999-01-05 Osram Sylvania Inc. Electric lamp with a threaded electrode
EP1037244A3 (en) 1999-03-12 2003-01-08 TDK Corporation Electron-emitting material and preparing process
JP3137961B2 (en) 1999-03-19 2001-02-26 ティーディーケイ株式会社 Electron emission electrode

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB257544A (en) * 1926-01-28 1926-09-02 Gen Electric Co Ltd Improvements in or relating to electric luminous discharge tubes
FR632685A (en) * 1926-05-24 1928-01-13
US2228327A (en) * 1929-05-04 1941-01-14 Hans J Spanner Discharge device
US1968608A (en) * 1932-05-20 1934-07-31 Westinghouse Electric & Mfg Co High efficiency oxide coated cathode and method of manufacture
US2032179A (en) * 1933-04-12 1936-02-25 Westinghouse Electric & Mfg Co Oxide coated cathode for heavy duty service
US2161790A (en) * 1933-08-26 1939-06-13 Lumineles Electrode for vacuum tubes
US2103623A (en) * 1933-09-20 1937-12-28 Ion Corp Electron discharge device for electronically bombarding materials
US2249672A (en) * 1936-12-10 1941-07-15 Gen Electric Discharge device
US2310983A (en) * 1940-02-20 1943-02-16 Samuel C Miller Electrode for luminous tubes and method of producing the same
US2624024A (en) * 1949-10-26 1952-12-30 Hartford Nat Bank & Trust Co Cathode for use in electron discharge tubes
BE526506A (en) * 1953-02-16

Also Published As

Publication number Publication date
US2888592A (en) 1959-05-26
FR1137405A (en) 1957-05-28

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