GB672978A - Improvements in and relating to electric discharge devices - Google Patents
Improvements in and relating to electric discharge devicesInfo
- Publication number
- GB672978A GB672978A GB10353/49A GB1035349A GB672978A GB 672978 A GB672978 A GB 672978A GB 10353/49 A GB10353/49 A GB 10353/49A GB 1035349 A GB1035349 A GB 1035349A GB 672978 A GB672978 A GB 672978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shield
- support
- cathode
- anode
- control grid
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/50—Thermionic-cathode tubes
- H01J17/52—Thermionic-cathode tubes with one cathode and one anode
- H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
- H01J17/56—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes for preventing and then permitting ignition, but thereafter having no control
Landscapes
- Lasers (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
672,978. Thermionic valves. BRITISH THOMSON-HOUSTON CO., Ltd. April 19, 1949 [April 19, 1948], No. 10353/49. Class 39 (i). An electric discharge device having substantially planar apertured shield members 25, 26 arranged respectively between a cathode and a control grid 34, and the control grid and a substantially planar anode 24, the shield member, control grid and anode being clamped together by a fastening means and held by a common supporting means through the intermediary of insulating spacer elements 32, has a substantially planar and conductive additional shield member 27 joined to the shield 26 and positioned on the opposite side of the anode from shield 26. The shield members may be cup-shaped, two of them, 26, 27, having their cylindrical flanges extending in'the same direction and bonded together, and the third, 25, having its cylindrical flange extending in the opposite direction. The grid 34 may have a depending flange 36 for cooling and resilient members 42 are attached to the flange and serve to space the grid from the envelope. The electrode assembly is supported from three support rods, of which two, 28, 29, are shown; support 28 makes an electrical connection to shields 26 and 27, support 29 is connected to shield 25, and the third support is connected to the control grid 34. These support-rods extend to a header 2 which also supports the cathode structure ; a conductor for the anode is sealed through the other end of the envelope. The ends of the cathode are connected to a common terminal and the mid-point of the cathode is connected to another terminal; resistances 52, 53 are connected between these terminals and lead-in conductor 8 which is connected to support-rod 29 so that shield 25 is kept at mid-cathode potential. The gas filling may be of xenon at 100-150 Á pressure.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US21876A US2508992A (en) | 1948-04-19 | 1948-04-19 | Electrode assembly for electric discharge devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB672978A true GB672978A (en) | 1952-05-28 |
Family
ID=21806628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10353/49A Expired GB672978A (en) | 1948-04-19 | 1949-04-19 | Improvements in and relating to electric discharge devices |
Country Status (3)
Country | Link |
---|---|
US (1) | US2508992A (en) |
FR (1) | FR984782A (en) |
GB (1) | GB672978A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5550430A (en) * | 1994-05-16 | 1996-08-27 | Litton Systems, Inc. | Gas discharge closing switch with unitary ceramic housing |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2848728A (en) * | 1955-08-03 | 1958-08-26 | Hoover Ball & Bearing Co | Dishwashing apparatus |
US3161798A (en) * | 1960-11-25 | 1964-12-15 | Sylvania Electric Prod | Electrode shield |
US3190991A (en) * | 1961-05-01 | 1965-06-22 | Jennings Radio Mfg Corp | Shield structure for vacuum switches and the like |
US3190986A (en) * | 1962-11-23 | 1965-06-22 | Jennings Radio Mfg Corp | High power vacuum fuse |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE401969A (en) * | 1933-03-14 | |||
US2044618A (en) * | 1933-12-29 | 1936-06-16 | Gen Electric | Electrostatically controlled arc discharge device |
US2112034A (en) * | 1936-10-22 | 1938-03-22 | Gen Electric | Electrical discharge device |
US2409855A (en) * | 1940-09-07 | 1946-10-22 | Jr Curtis Hillyer | Gaseous discharge tube |
BE476492A (en) * | 1941-10-30 | |||
NL68025C (en) * | 1943-09-24 | |||
US2399003A (en) * | 1944-10-16 | 1946-04-23 | Gen Electric | Electric discharge device |
US2443205A (en) * | 1945-05-03 | 1948-06-15 | Raytheon Mfg Co | Gaseous discharge device |
-
1948
- 1948-04-19 US US21876A patent/US2508992A/en not_active Expired - Lifetime
-
1949
- 1949-04-15 FR FR984782D patent/FR984782A/en not_active Expired
- 1949-04-19 GB GB10353/49A patent/GB672978A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5550430A (en) * | 1994-05-16 | 1996-08-27 | Litton Systems, Inc. | Gas discharge closing switch with unitary ceramic housing |
GB2301933A (en) * | 1994-05-16 | 1996-12-18 | Litton Systems Inc | Gas discharge closing switch |
Also Published As
Publication number | Publication date |
---|---|
US2508992A (en) | 1950-05-23 |
FR984782A (en) | 1951-07-10 |
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