GB398290A - Improvements in and relating to enclosed electric arc devices - Google Patents

Improvements in and relating to enclosed electric arc devices

Info

Publication number
GB398290A
GB398290A GB14051/32A GB1405132A GB398290A GB 398290 A GB398290 A GB 398290A GB 14051/32 A GB14051/32 A GB 14051/32A GB 1405132 A GB1405132 A GB 1405132A GB 398290 A GB398290 A GB 398290A
Authority
GB
United Kingdom
Prior art keywords
electrodes
filament
tungsten
arc
lamps
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
GB14051/32A
Other languages
English (en)
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.)
HAROLD D BLAKE
ROYAL FRANK STRICKLAND
British Thomson Houston Co Ltd
Original Assignee
HAROLD D BLAKE
ROYAL FRANK STRICKLAND
British Thomson Houston Co Ltd
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 HAROLD D BLAKE, ROYAL FRANK STRICKLAND, British Thomson Houston Co Ltd filed Critical HAROLD D BLAKE
Publication of GB398290A publication Critical patent/GB398290A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/84Lamps with discharge constricted by high pressure
    • H01J61/86Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/54Igniting arrangements, e.g. promoting ionisation for starting
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00Electric arc lamps
    • H05B31/0018Electric arc lamps in a closed vessel
    • H05B31/0027Electric arc lamps in a closed vessel with special gasfilling

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
GB14051/32A 1931-05-19 1932-05-17 Improvements in and relating to enclosed electric arc devices Expired GB398290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US538530A US2081776A (en) 1931-05-19 1931-05-19 Enclosed arc device

Publications (1)

Publication Number Publication Date
GB398290A true GB398290A (en) 1933-09-14

Family

ID=24147282

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14051/32A Expired GB398290A (en) 1931-05-19 1932-05-17 Improvements in and relating to enclosed electric arc devices

Country Status (4)

Country Link
US (1) US2081776A (enrdf_load_stackoverflow)
DE (1) DE576935C (enrdf_load_stackoverflow)
GB (1) GB398290A (enrdf_load_stackoverflow)
NL (1) NL36524C (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3522654A1 (de) * 1985-01-21 1987-01-08 Paul Prof Dr Schulz Gluehlampen hoher lichtausbeute und gluehlampen mit bogenentladungen
US4939417A (en) * 1988-12-20 1990-07-03 Gte Products Corporation High pressure discharge lamp with incandescent filament for starting

Also Published As

Publication number Publication date
DE576935C (de) 1933-05-19
US2081776A (en) 1937-05-25
NL36524C (enrdf_load_stackoverflow)

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