GB682376A - Improvements in or relating to lead-in seal for electrical discharge devices - Google Patents

Improvements in or relating to lead-in seal for electrical discharge devices

Info

Publication number
GB682376A
GB682376A GB9559/51A GB955951A GB682376A GB 682376 A GB682376 A GB 682376A GB 9559/51 A GB9559/51 A GB 9559/51A GB 955951 A GB955951 A GB 955951A GB 682376 A GB682376 A GB 682376A
Authority
GB
United Kingdom
Prior art keywords
foil
lead
seal
tube
conductor
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
GB9559/51A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB682376A publication Critical patent/GB682376A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

682,376. Discharge apparatus. KREFFT, H. E. April 24, 1951 [Jan. 25, 1951], No. 9559/51. Class 39(i) [Also in Group XXXVI] A lead in seal for an electric discharge device comprises an electric conductor consisting of an inner lead 18 and an outer lead 4 connected by a thin foil 5 which is sealed in a quartz glass body 1 having a tubular plug 2 fused to one end so that the inner lead 18 is located axially of and spaced from the inner wall of the plug 2. The leads 4, 18, which are of sheet metal are connected to the foil 5 by tongues 9, 16 which pass through slots in the foil, and by folding the margins 8, 15 of the leads over the foil, the parts then being secured by spot welding. That part of the inner lead 18 that is not secured to the foil 5 may be bent to tubular shape to receive a support rod for an electrode. The foil 5 may have stiffening ribs, and the sealing edges 13 may be wedge shaped and bent out of the plane of the foil. The vitreous jacket is made from two quartz glass tubes of different diameters joined end to end. The assembled conductor is introduced into the larger tube so that the tubular conductor 18 lies in the smaller tube, through which an inert gas is then passed. The larger tube is heated and pressed on to the foil 5 and the resulting seal is severed from the remainder of the tube. The smaller tube is also cut, leaving the plug 2 for sealing to a vitreous envelope. Quartz 3 remaining on the outer lead 4 is removed to form the completed seal. The lead in conductor may be made of molybdenum, tungsten or tantalum.
GB9559/51A 1951-01-25 1951-04-24 Improvements in or relating to lead-in seal for electrical discharge devices Expired GB682376A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US207687A US2786882A (en) 1951-01-25 1951-01-25 Lead-in seal for electrical discharge devices

Publications (1)

Publication Number Publication Date
GB682376A true GB682376A (en) 1952-11-05

Family

ID=22771585

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9559/51A Expired GB682376A (en) 1951-01-25 1951-04-24 Improvements in or relating to lead-in seal for electrical discharge devices

Country Status (3)

Country Link
US (1) US2786882A (en)
DE (1) DE854686C (en)
GB (1) GB682376A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0479089A1 (en) * 1990-10-02 1992-04-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High pressure discharge lamp and method for producing the same
EP0479088A1 (en) * 1990-10-02 1992-04-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High pressure discharge lamp and method for producing the same
EP0479087A1 (en) * 1990-10-02 1992-04-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High pressure discharge lamp

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966607A (en) * 1959-05-26 1960-12-27 Duro Test Corp High pressure short arc lamps and method of making same
US4110657A (en) * 1977-03-14 1978-08-29 General Electric Company Lead-in seal and lamp utilizing same
US4254356A (en) * 1979-04-23 1981-03-03 General Electric Company Inlead and method of making a discharge lamp
USRE31519E (en) * 1982-11-12 1984-02-07 General Electric Company Lead-in seal and lamp utilizing same
US4587454A (en) * 1984-05-17 1986-05-06 Gte Products Corporation Incandescent lamp with improved press seal
US5008592A (en) * 1988-11-15 1991-04-16 U.S. Philips Corporation Halogen incandescent lamp and method of manufacturing a halogen incandescent lamp
DE19812379A1 (en) * 1998-03-20 1999-09-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Halogen bulb with hermetically sealed envelope of transparent material which defines lamp axis
JP3085303B1 (en) * 1999-07-05 2000-09-04 ウシオ電機株式会社 Discharge lamp
JP3648184B2 (en) * 2001-09-07 2005-05-18 株式会社小糸製作所 Discharge lamp arc tube and method of manufacturing the same
US6661172B2 (en) * 2002-01-11 2003-12-09 General Electric Company Electrode assembly and lamp with conductor foil
KR101123454B1 (en) * 2004-12-24 2012-03-26 엘지디스플레이 주식회사 Fluorescent lamp, manufacturing method thereof and backlight unit having the same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US356795A (en) * 1884-10-25 1887-02-01 Terminal for incandescent lamps
US2187860A (en) * 1936-11-04 1940-01-23 Lauster Franz Lead-in conductor for mercury vapor tubes
US2244960A (en) * 1939-08-10 1941-06-10 Gen Electric Method of making seals for discharge lamps
US2231459A (en) * 1939-11-07 1941-02-11 Hanovia Chemical & Mfg Co Electrical conductor for vapor electric devices
US2273488A (en) * 1939-12-29 1942-02-17 Chemical Products Company Method of sealing electrical conductors to quartz
US2496303A (en) * 1944-07-15 1950-02-07 Westinghouse Electric Corp Tipping-off operation and product
GB630547A (en) * 1945-03-05 1949-10-17 Gen Electric Co Ltd Improvements in and relating to electric discharge lamps
NL74848C (en) * 1946-07-12
FR959500A (en) * 1947-01-10 1950-03-30
US2562163A (en) * 1949-03-01 1951-07-31 Philips Lab Inc Electric discharge tube

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0479089A1 (en) * 1990-10-02 1992-04-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High pressure discharge lamp and method for producing the same
EP0479088A1 (en) * 1990-10-02 1992-04-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High pressure discharge lamp and method for producing the same
EP0479087A1 (en) * 1990-10-02 1992-04-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High pressure discharge lamp
US5200669A (en) * 1990-10-02 1993-04-06 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H Elevated power high-pressure discharge lamp
US5264759A (en) * 1990-10-02 1993-11-23 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh High-pressure, high-power discharge lamp, and method of its manufacture
US5304892A (en) * 1990-10-02 1994-04-19 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Double-ended high-pressure discharge lamp

Also Published As

Publication number Publication date
US2786882A (en) 1957-03-26
DE854686C (en) 1952-11-06

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