GB489925A - Improvements in and relating to electric discharge lamps - Google Patents

Improvements in and relating to electric discharge lamps

Info

Publication number
GB489925A
GB489925A GB14986/38A GB1498638A GB489925A GB 489925 A GB489925 A GB 489925A GB 14986/38 A GB14986/38 A GB 14986/38A GB 1498638 A GB1498638 A GB 1498638A GB 489925 A GB489925 A GB 489925A
Authority
GB
United Kingdom
Prior art keywords
lamp
discharge lamps
relating
electric discharge
inlead
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
GB14986/38A
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.)
British Thomson Houston Co Ltd
Original Assignee
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB489925A publication Critical patent/GB489925A/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
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

489,925. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. May 19, 1938, No. 14986. Convention date, May 21, 1937. [Class 39 (i)] The lead to the upper electrode 9 of a lamp 6 is in the form of a helix 13, so that the shadow thrown thereby is uniform along the lamp. It is supported by a spiral spring 15 at the top, and connected to the inlead 5 which has attached a band 12 acting both as a lamp support and starting electrode. The other inlead 4 also acts as a support for the lamp.
GB14986/38A 1937-05-21 1938-05-19 Improvements in and relating to electric discharge lamps Expired GB489925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US489925XA 1937-05-21 1937-05-21

Publications (1)

Publication Number Publication Date
GB489925A true GB489925A (en) 1938-08-05

Family

ID=21957515

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14986/38A Expired GB489925A (en) 1937-05-21 1938-05-19 Improvements in and relating to electric discharge lamps

Country Status (1)

Country Link
GB (1) GB489925A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553575A1 (en) * 1983-10-18 1985-04-19 Toshiba Kk High-pressure sodium vapour lamp
EP0186899A2 (en) * 1984-12-28 1986-07-09 GTE Products Corporation Metal halide lamp with arc tube shield support
WO2000021117A1 (en) * 1998-10-02 2000-04-13 Koninklijke Philips Electronics N.V. Metal halide lamp with stem mounted support frame for arc tube shield
WO2003030209A1 (en) * 2001-10-01 2003-04-10 Koninklijke Philips Electronics N.V. Ceramic hid lamp
EP1798755A3 (en) * 2005-12-13 2007-08-22 Osram Sylvania, Inc. Containment structure for light source capsules operating at other than the pressure of a surrounding gas

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553575A1 (en) * 1983-10-18 1985-04-19 Toshiba Kk High-pressure sodium vapour lamp
EP0186899A2 (en) * 1984-12-28 1986-07-09 GTE Products Corporation Metal halide lamp with arc tube shield support
EP0186899A3 (en) * 1984-12-28 1988-10-19 Gte Products Corporation Metal halide lamp with arc tube shield support
WO2000021117A1 (en) * 1998-10-02 2000-04-13 Koninklijke Philips Electronics N.V. Metal halide lamp with stem mounted support frame for arc tube shield
WO2003030209A1 (en) * 2001-10-01 2003-04-10 Koninklijke Philips Electronics N.V. Ceramic hid lamp
US6844676B2 (en) 2001-10-01 2005-01-18 Koninklijke Philips Electronics N.V. Ceramic HID lamp with special frame wire for stabilizing the arc
EP1798755A3 (en) * 2005-12-13 2007-08-22 Osram Sylvania, Inc. Containment structure for light source capsules operating at other than the pressure of a surrounding gas

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