GB976012A - Improvements relating to heating filaments for indirectly-heated cathodes for electron tubes - Google Patents
Improvements relating to heating filaments for indirectly-heated cathodes for electron tubesInfo
- Publication number
- GB976012A GB976012A GB4795262A GB4795262A GB976012A GB 976012 A GB976012 A GB 976012A GB 4795262 A GB4795262 A GB 4795262A GB 4795262 A GB4795262 A GB 4795262A GB 976012 A GB976012 A GB 976012A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- aluminium oxide
- filament
- coated
- layer
- 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
- 238000010438 heat treatment Methods 0.000 title abstract 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 12
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052721 tungsten Inorganic materials 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 229910052792 caesium Inorganic materials 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 150000002431 hydrogen Chemical class 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 229910052744 lithium Inorganic materials 0.000 abstract 1
- NMHMDUCCVHOJQI-UHFFFAOYSA-N lithium molybdate Chemical compound [Li+].[Li+].[O-][Mo]([O-])(=O)=O NMHMDUCCVHOJQI-UHFFFAOYSA-N 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 229910052702 rhenium Inorganic materials 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 229910052715 tantalum Inorganic materials 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
Classifications
-
- 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
- H01J9/08—Manufacture of heaters for indirectly-heated cathodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL272882 | 1961-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB976012A true GB976012A (en) | 1964-11-25 |
Family
ID=19753496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4795262A Expired GB976012A (en) | 1961-12-22 | 1962-12-19 | Improvements relating to heating filaments for indirectly-heated cathodes for electron tubes |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE626373A (enrdf_load_stackoverflow) |
| CH (1) | CH423001A (enrdf_load_stackoverflow) |
| DE (1) | DE1234859B (enrdf_load_stackoverflow) |
| GB (1) | GB976012A (enrdf_load_stackoverflow) |
| NL (1) | NL113095C (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1281038B (de) * | 1962-08-01 | 1968-10-24 | Telefunken Patent | Verfahren zur Herstellung einer mittelbar geheizten Kathode fuer eine elektrische Entladungsroehre |
| DE2317446C3 (de) * | 1973-04-06 | 1983-11-10 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Verfahren zum Herstellen eines Heizelementes für eine indirekt geheizte Kathode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL268393A (enrdf_load_stackoverflow) | 1960-08-19 |
-
0
- NL NL113095D patent/NL113095C/xx active
- BE BE626373D patent/BE626373A/xx unknown
-
1962
- 1962-12-18 DE DE1962N0022490 patent/DE1234859B/de active Pending
- 1962-12-19 GB GB4795262A patent/GB976012A/en not_active Expired
- 1962-12-19 CH CH1493362A patent/CH423001A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1234859B (de) | 1967-02-23 |
| CH423001A (de) | 1966-10-31 |
| NL113095C (enrdf_load_stackoverflow) | |
| BE626373A (enrdf_load_stackoverflow) |
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