GB1473563A - Metal halide discharge lamp having expanded section arc tube - Google Patents

Metal halide discharge lamp having expanded section arc tube

Info

Publication number
GB1473563A
GB1473563A GB2893074A GB2893074A GB1473563A GB 1473563 A GB1473563 A GB 1473563A GB 2893074 A GB2893074 A GB 2893074A GB 2893074 A GB2893074 A GB 2893074A GB 1473563 A GB1473563 A GB 1473563A
Authority
GB
United Kingdom
Prior art keywords
discharge lamp
metal halide
arc tube
halide discharge
inches
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
GB2893074A
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.)
GTE Sylvania Inc
Original Assignee
GTE Sylvania Inc
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 GTE Sylvania Inc filed Critical GTE Sylvania Inc
Publication of GB1473563A publication Critical patent/GB1473563A/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
    • H01J61/30—Vessels; Containers
    • H01J61/33—Special shape of cross-section, e.g. for producing cool spot

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)

Abstract

1473563 Metal vapour lamps GTE SYLVANIA Inc 28 June 1974 [19 July 1973] 28930/74 Heading H1D In a metal halide discharge lamp, filled with Hg, NaI, ScI 3 and inert gas, convection is maintained as a single cell without radial flow in the region between the electrodes when the axis is other than horizontal by expanding the central region of the arc tube, e.g. when 6 inches long from 0À851 inches O.D. at the ends to 1À194 inches at the centre, corresponding to a diameter ratio of 1À4 and a ratio of arc length to maximum diameter of 3À4. The maximum diameter may occur slightly above the centre.
GB2893074A 1973-07-19 1974-06-28 Metal halide discharge lamp having expanded section arc tube Expired GB1473563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US380737A US3896326A (en) 1973-07-19 1973-07-19 Metal halide discharge lamp having expanded section arc tube

Publications (1)

Publication Number Publication Date
GB1473563A true GB1473563A (en) 1977-05-18

Family

ID=23502259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2893074A Expired GB1473563A (en) 1973-07-19 1974-06-28 Metal halide discharge lamp having expanded section arc tube

Country Status (4)

Country Link
US (1) US3896326A (en)
CA (1) CA1000338A (en)
DE (1) DE2433333A1 (en)
GB (1) GB1473563A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7503164A (en) * 1974-03-20 1975-09-23 Thorn Electrical Ind Ltd ARC DISCHARGE TUBE FOR HIGH PRESSURE MERCURY / METAL HALOGENIDE LAMPS.
US4074165A (en) * 1975-05-23 1978-02-14 Moriyama Sangyo Kabushiki Kaisha Decorative light source including a discharge lamp and resistor within an outer envelope
US4161672A (en) * 1977-07-05 1979-07-17 General Electric Company High pressure metal vapor discharge lamps of improved efficacy
US4825127A (en) * 1987-06-24 1989-04-25 Gte Products Corporation Metal halide discharge lamp for plant growing
US5138228A (en) * 1990-12-31 1992-08-11 Welch Allyn, Inc. Bulb geometry for low power metal halide lamp
US5261984A (en) * 1992-01-21 1993-11-16 General Electric Company Stamp press process for imprinting decorative textures in thermoplastic composites
US5708328A (en) * 1992-06-03 1998-01-13 General Electric Company Universal burn metal halide lamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3543076A (en) * 1968-10-31 1970-11-24 Boeing Co Aeorodynamic arc lamp electrodes
US3590307A (en) * 1969-01-08 1971-06-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Additive-type high-pressure mercury-vapor discharge device having good ultraviolet output
GB1305065A (en) * 1969-05-20 1973-01-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh

Also Published As

Publication number Publication date
CA1000338A (en) 1976-11-23
US3896326A (en) 1975-07-22
DE2433333A1 (en) 1975-02-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee