WO2007063008A3 - Halogen light bulb comprising a carbide-containing filament - Google Patents

Halogen light bulb comprising a carbide-containing filament Download PDF

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Publication number
WO2007063008A3
WO2007063008A3 PCT/EP2006/068738 EP2006068738W WO2007063008A3 WO 2007063008 A3 WO2007063008 A3 WO 2007063008A3 EP 2006068738 W EP2006068738 W EP 2006068738W WO 2007063008 A3 WO2007063008 A3 WO 2007063008A3
Authority
WO
WIPO (PCT)
Prior art keywords
filament
carbide
light bulb
halogen light
metal
Prior art date
Application number
PCT/EP2006/068738
Other languages
German (de)
French (fr)
Other versions
WO2007063008A2 (en
Inventor
Axel Bunk
Matthias Damm
Georg Rosenbauer
Original Assignee
Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
Axel Bunk
Matthias Damm
Georg Rosenbauer
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 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh, Axel Bunk, Matthias Damm, Georg Rosenbauer filed Critical Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
Publication of WO2007063008A2 publication Critical patent/WO2007063008A2/en
Publication of WO2007063008A3 publication Critical patent/WO2007063008A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/04—Incandescent bodies characterised by the material thereof
    • H01K1/10—Bodies of metal or carbon combined with other substance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Resistance Heating (AREA)

Abstract

Disclosed is a halogen light bulb comprising a carbide-containing filament and lead-in wires which retain the filament. A filament is vacuum-tightly introduced into a bulb along with a filling. The filament is provided with a metal carbide whose melting point is greater than that of tungsten, the carbon concentration of the metal carbide being smaller than that corresponding to complete carburization, i.e. carburization resulting in the production of metal carbides in which the number of metal atoms and the number of carbon atoms are at an integer stoichiometric ratio relative to each other.
PCT/EP2006/068738 2005-11-30 2006-11-22 Halogen light bulb comprising a carbide-containing filament WO2007063008A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005057084.4 2005-11-30
DE200510057084 DE102005057084A1 (en) 2005-11-30 2005-11-30 Incandescent filament with melting point exceeding that of tungsten, used in quartz halogen bulb, contains metal carbide in which carbon content is sub-stoichiometric

Publications (2)

Publication Number Publication Date
WO2007063008A2 WO2007063008A2 (en) 2007-06-07
WO2007063008A3 true WO2007063008A3 (en) 2007-10-11

Family

ID=37943845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/068738 WO2007063008A2 (en) 2005-11-30 2006-11-22 Halogen light bulb comprising a carbide-containing filament

Country Status (2)

Country Link
DE (1) DE102005057084A1 (en)
WO (1) WO2007063008A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7851985B2 (en) 2006-03-31 2010-12-14 General Electric Company Article incorporating a high temperature ceramic composite for selective emission
US7722421B2 (en) 2006-03-31 2010-05-25 General Electric Company High temperature ceramic composite for selective emission
US8044567B2 (en) 2006-03-31 2011-10-25 General Electric Company Light source incorporating a high temperature ceramic composite and gas phase for selective emission

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113893A (en) * 1960-10-14 1963-12-10 Sylvania Electric Prod Incandescent filament
GB957597A (en) * 1961-11-29 1964-05-06 Gen Electric Improvements in metallic carbide filament lamps
US3287591A (en) * 1961-12-13 1966-11-22 Sylvania Electric Prod Tantalum carbide incandescent lamp and method of manufacture thereof
GB1144374A (en) * 1965-10-27 1969-03-05 Philips Electronic Associated Improvements relating to electric incandescent lamps
US3441777A (en) * 1966-06-01 1969-04-29 Gen Telephone & Elect Elements for incandescent devices
US3523207A (en) * 1968-01-18 1970-08-04 Westinghouse Electric Corp Incandescent lamp with tantalum carbide filament and nitrogen gas atmosphere
DE10358262A1 (en) * 2003-12-01 2005-09-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Light bulb with carbon cycle process

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113893A (en) * 1960-10-14 1963-12-10 Sylvania Electric Prod Incandescent filament
GB957597A (en) * 1961-11-29 1964-05-06 Gen Electric Improvements in metallic carbide filament lamps
US3287591A (en) * 1961-12-13 1966-11-22 Sylvania Electric Prod Tantalum carbide incandescent lamp and method of manufacture thereof
GB1144374A (en) * 1965-10-27 1969-03-05 Philips Electronic Associated Improvements relating to electric incandescent lamps
US3441777A (en) * 1966-06-01 1969-04-29 Gen Telephone & Elect Elements for incandescent devices
US3523207A (en) * 1968-01-18 1970-08-04 Westinghouse Electric Corp Incandescent lamp with tantalum carbide filament and nitrogen gas atmosphere
DE10358262A1 (en) * 2003-12-01 2005-09-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Light bulb with carbon cycle process

Also Published As

Publication number Publication date
WO2007063008A2 (en) 2007-06-07
DE102005057084A1 (en) 2007-05-31

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