GB1378138A - Thermionic cathode for an electric discharge tube - Google Patents
Thermionic cathode for an electric discharge tubeInfo
- Publication number
- GB1378138A GB1378138A GB2515573A GB2515573A GB1378138A GB 1378138 A GB1378138 A GB 1378138A GB 2515573 A GB2515573 A GB 2515573A GB 2515573 A GB2515573 A GB 2515573A GB 1378138 A GB1378138 A GB 1378138A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- electric discharge
- discharge tube
- thermionic cathode
- plate
- 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
- 239000000203 mixture Substances 0.000 abstract 2
- 229910017709 Ni Co Inorganic materials 0.000 abstract 1
- 229910003267 Ni-Co Inorganic materials 0.000 abstract 1
- 229910003262 Ni‐Co Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000010406 cathode material Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/15—Cathodes heated directly by an electric current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/14—Solid thermionic cathodes characterised by the material
- H01J1/148—Solid thermionic cathodes characterised by the material with compounds having metallic conductive properties, e.g. lanthanum boride, as an emissive material
Landscapes
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7207276A NL7207276A (enrdf_load_stackoverflow) | 1972-05-30 | 1972-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1378138A true GB1378138A (en) | 1974-12-18 |
Family
ID=19816154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2515573A Expired GB1378138A (en) | 1972-05-30 | 1973-05-25 | Thermionic cathode for an electric discharge tube |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3823337A (enrdf_load_stackoverflow) |
| JP (1) | JPS555660B2 (enrdf_load_stackoverflow) |
| CA (1) | CA990777A (enrdf_load_stackoverflow) |
| CH (1) | CH554071A (enrdf_load_stackoverflow) |
| DE (1) | DE2325274C3 (enrdf_load_stackoverflow) |
| FR (1) | FR2186722B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1378138A (enrdf_load_stackoverflow) |
| NL (1) | NL7207276A (enrdf_load_stackoverflow) |
| SE (1) | SE382885B (enrdf_load_stackoverflow) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4019081A (en) * | 1974-10-25 | 1977-04-19 | Bbc Brown Boveri & Company Limited | Reaction cathode |
| JPS607335B2 (ja) * | 1974-11-29 | 1985-02-23 | カナデイアン、パテンツ、アンド、デイベラツプメント、リミテツド | 熱電子放射陰極 |
| US4055780A (en) * | 1975-04-10 | 1977-10-25 | National Institute For Researches In Inorganic Materials | Thermionic emission cathode having a tip of a single crystal of lanthanum hexaboride |
| US4009409A (en) * | 1975-09-02 | 1977-02-22 | Gte Sylvania Incorporated | Fast warmup cathode and method of making same |
| US4054946A (en) * | 1976-09-28 | 1977-10-18 | Bell Telephone Laboratories, Incorporated | Electron source of a single crystal of lanthanum hexaboride emitting surface of (110) crystal plane |
| US4137476A (en) * | 1977-05-18 | 1979-01-30 | Denki Kagaku Kogyo Kabushiki Kaisha | Thermionic cathode |
| US4168565A (en) * | 1977-05-18 | 1979-09-25 | Denki Kagaku Kogyo Kabushiki Kaisha | Method for manufacturing thermionic cathode |
| US4258283A (en) * | 1978-08-31 | 1981-03-24 | Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten | Cathode for electron emission |
| FR2445605A1 (fr) * | 1978-12-27 | 1980-07-25 | Thomson Csf | Cathode a chauffage direct et tube electronique haute frequence comportant une telle cathode |
| JPS57196443A (en) * | 1981-05-29 | 1982-12-02 | Denki Kagaku Kogyo Kk | Manufacture of hot cathode |
| EP0637046B1 (en) * | 1993-07-29 | 1998-04-01 | Nec Corporation | Thermoionic emissive cathode method of fabricating the same thermoionic emissive cathode and electron beam apparatus |
| JP2010157490A (ja) * | 2008-12-02 | 2010-07-15 | Canon Inc | 電子放出素子および該電子放出素子を用いた表示パネル |
-
1972
- 1972-05-30 NL NL7207276A patent/NL7207276A/xx not_active Application Discontinuation
-
1973
- 1973-05-18 DE DE2325274A patent/DE2325274C3/de not_active Expired
- 1973-05-24 CA CA172,128A patent/CA990777A/en not_active Expired
- 1973-05-25 US US00363877A patent/US3823337A/en not_active Expired - Lifetime
- 1973-05-25 CH CH755273A patent/CH554071A/xx not_active IP Right Cessation
- 1973-05-25 GB GB2515573A patent/GB1378138A/en not_active Expired
- 1973-05-28 JP JP5875873A patent/JPS555660B2/ja not_active Expired
- 1973-05-28 SE SE7307547A patent/SE382885B/xx unknown
- 1973-05-30 FR FR7319646A patent/FR2186722B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3823337A (en) | 1974-07-09 |
| CA990777A (en) | 1976-06-08 |
| DE2325274B2 (de) | 1980-10-23 |
| NL7207276A (enrdf_load_stackoverflow) | 1973-12-04 |
| JPS4944662A (enrdf_load_stackoverflow) | 1974-04-26 |
| JPS555660B2 (enrdf_load_stackoverflow) | 1980-02-08 |
| DE2325274C3 (de) | 1981-07-09 |
| CH554071A (de) | 1974-09-13 |
| FR2186722A1 (enrdf_load_stackoverflow) | 1974-01-11 |
| SE382885B (sv) | 1976-02-16 |
| DE2325274A1 (de) | 1973-12-13 |
| FR2186722B1 (enrdf_load_stackoverflow) | 1976-09-17 |
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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 |