GB757272A - Improvements relating to dispenser cathodes - Google Patents
Improvements relating to dispenser cathodesInfo
- Publication number
- GB757272A GB757272A GB23248/54A GB2324854A GB757272A GB 757272 A GB757272 A GB 757272A GB 23248/54 A GB23248/54 A GB 23248/54A GB 2324854 A GB2324854 A GB 2324854A GB 757272 A GB757272 A GB 757272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- holder
- closure
- recess
- metal powder
- sintered
- 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
- 239000000843 powder Substances 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000003870 refractory metal Substances 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten 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
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/28—Dispenser-type cathodes, e.g. L-cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US382085A US2830218A (en) | 1953-09-24 | 1953-09-24 | Dispenser cathodes and methods of making them |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB757272A true GB757272A (en) | 1956-09-19 |
Family
ID=23507463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23248/54A Expired GB757272A (en) | 1953-09-24 | 1954-08-10 | Improvements relating to dispenser cathodes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2830218A (enrdf_load_stackoverflow) |
| FR (1) | FR1112390A (enrdf_load_stackoverflow) |
| GB (1) | GB757272A (enrdf_load_stackoverflow) |
| NL (1) | NL96853C (enrdf_load_stackoverflow) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE564257A (enrdf_load_stackoverflow) * | 1957-01-26 | |||
| US2945150A (en) * | 1958-12-11 | 1960-07-12 | Gen Electric | Thermionic cathodes and methods of making |
| US3045320A (en) * | 1959-03-12 | 1962-07-24 | Raytheon Co | Impregnated cathodes |
| DE1112209B (de) * | 1959-03-20 | 1961-08-03 | Siemens Ag | Mittelbar geheizte Kathode mit einer scheibenfoermigen Emissionsflaeche und mit einer Halterung aus nahtlosem Folie-Rohr |
| US3323916A (en) * | 1964-10-23 | 1967-06-06 | Westinghouse Electric Corp | Method of making heater assemblies by wet-settling techniques |
| DE1283402B (de) * | 1966-03-29 | 1968-11-21 | Siemens Ag | Mittelbar geheizte Vorratskathode fuer elektrische Entladungsgefaesse |
| DE2245717A1 (de) * | 1972-09-18 | 1974-03-28 | Patra Patent Treuhand | Elektrode mit einem poroesen sinterkoerper |
| DE3527360C2 (de) * | 1985-07-31 | 1996-04-18 | Licentia Gmbh | Vorratskathode |
| GB2188771B (en) * | 1986-04-01 | 1990-12-19 | Ceradyne Inc | Dispenser cathode and method of manufacture therefor |
| DE3627384A1 (de) * | 1986-08-12 | 1988-02-18 | Siemens Ag | Indirekt geheizte vorratskathode, insbesondere metall-kapillar-kathode, fuer elektrische entladungsgefaesse |
| JPH11339633A (ja) * | 1997-11-04 | 1999-12-10 | Sony Corp | 含浸型陰極およびその製造方法、並びに電子銃および電子管 |
| DE102010055175B4 (de) * | 2010-12-20 | 2014-07-10 | Heraeus Precious Metals Gmbh & Co. Kg | Verfahren zum Herstellen eines medizinischen Implantats und medizinisches Implantat |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2121589A (en) * | 1934-06-28 | 1938-06-21 | Westinghouse Electric & Mfg Co | Emissive incandescent cathode |
| US2460738A (en) * | 1946-04-17 | 1949-02-01 | Gen Electric | Electrode construction |
| NL69486C (enrdf_load_stackoverflow) * | 1947-11-26 | |||
| US2643332A (en) * | 1949-03-29 | 1953-06-23 | Hartford Nat Bank & Trust Co | High-frequency electron discharge tube system |
| BE498869A (enrdf_load_stackoverflow) * | 1949-10-25 | |||
| BE512939A (enrdf_load_stackoverflow) * | 1951-07-20 | |||
| NL91132C (enrdf_load_stackoverflow) * | 1951-11-29 |
-
0
- NL NL96853D patent/NL96853C/xx active
-
1953
- 1953-09-24 US US382085A patent/US2830218A/en not_active Expired - Lifetime
-
1954
- 1954-08-10 GB GB23248/54A patent/GB757272A/en not_active Expired
- 1954-09-10 FR FR1112390D patent/FR1112390A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1112390A (fr) | 1956-03-13 |
| NL96853C (enrdf_load_stackoverflow) | |
| US2830218A (en) | 1958-04-08 |
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