GB674878A - Improvements in and relating to electric discharge devices - Google Patents
Improvements in and relating to electric discharge devicesInfo
- Publication number
- GB674878A GB674878A GB5388/49A GB538849A GB674878A GB 674878 A GB674878 A GB 674878A GB 5388/49 A GB5388/49 A GB 5388/49A GB 538849 A GB538849 A GB 538849A GB 674878 A GB674878 A GB 674878A
- Authority
- GB
- United Kingdom
- Prior art keywords
- group
- per cent
- electric discharge
- weight
- relating
- 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
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
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel
Landscapes
- Conductive Materials (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
674,878. Glass-to-metal seals. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 28, 1949 [March 3, 1948], No. 5388/49. Class 36. [Also in Group XL (a)] The joint cement 19 between the glass tube 2 and metal base 17 of an electric discharge device (see Group XL (a)) is made electrically conducting by the addition of carbon, and may comprise 15-17 per cent by weight of a resin consisting of one part by weight of a commercial plastic moulding compound, four parts resin and six and one half parts shellac, and 83-85 per cent marble flour filler, of which 8-20 per cent is graphite flakes. Reference has been directed by the Comptroller to Specifications 592,248, [Group XL], and 647,778, [Group XL (a)].
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12788A US2508118A (en) | 1948-03-03 | 1948-03-03 | Starting strip for electric discharge devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB674878A true GB674878A (en) | 1952-07-02 |
Family
ID=21756699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5388/49A Expired GB674878A (en) | 1948-03-03 | 1949-02-28 | Improvements in and relating to electric discharge devices |
Country Status (3)
Country | Link |
---|---|
US (1) | US2508118A (en) |
FR (1) | FR982257A (en) |
GB (1) | GB674878A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733368A (en) * | 1951-03-29 | 1956-01-31 | Kolkman | |
US2893289A (en) * | 1953-03-09 | 1959-07-07 | Harold E Edgerton | Microscope flash-photography system and apparatus |
DE1028685B (en) * | 1956-08-01 | 1958-04-24 | Patra Patent Treuhand | Electric discharge lamp with internal ignition, in particular fluorescent lamp |
GB1476160A (en) * | 1973-12-21 | 1977-06-10 | Heimann Gmbh | Pulse discharge lamps |
US4084208A (en) * | 1975-03-28 | 1978-04-11 | General Instrument Corporation | Gas-filled surge arrestors |
US4506192A (en) * | 1983-02-22 | 1985-03-19 | Gte Laboratories Incorporated | Fluorescent lamp and a base thereof |
US4878854A (en) * | 1988-05-31 | 1989-11-07 | Gte Products Corporation | Lamp base |
US4854888A (en) * | 1988-05-31 | 1989-08-08 | Gte Products Corporation | Lamp base |
US6563265B1 (en) * | 2000-11-06 | 2003-05-13 | General Electric Company | Applying prealloyed powders as conducting members to arc tubes |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1922221A (en) * | 1929-07-20 | 1933-08-15 | Westinghouse Electric & Mfg Co | Resistance material |
GB446833A (en) * | 1934-11-06 | 1936-05-06 | British Thomson Houston Co Ltd | Improvements in and relating to electric discharge lamps |
DE636027C (en) * | 1935-06-06 | 1936-09-30 | Patra Patent Treuhand | Electric light tubes with electrodes attached to the ends, in particular glow electrodes, and wire helix housed inside the tube |
US2146579A (en) * | 1936-04-22 | 1939-02-07 | Gen Electric | Electric discharge lamp |
-
1948
- 1948-03-03 US US12788A patent/US2508118A/en not_active Expired - Lifetime
-
1949
- 1949-02-28 GB GB5388/49A patent/GB674878A/en not_active Expired
- 1949-03-02 FR FR982257D patent/FR982257A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2508118A (en) | 1950-05-16 |
FR982257A (en) | 1951-06-08 |
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