GB994471A - Improvements relating to indirectly heated cathodes for use in electron valves - Google Patents
Improvements relating to indirectly heated cathodes for use in electron valvesInfo
- Publication number
- GB994471A GB994471A GB44443/61A GB4444361A GB994471A GB 994471 A GB994471 A GB 994471A GB 44443/61 A GB44443/61 A GB 44443/61A GB 4444361 A GB4444361 A GB 4444361A GB 994471 A GB994471 A GB 994471A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- gms
- improvements relating
- indirectly heated
- aluminium
- 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
- 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
- H01J1/26—Supports for the emissive material
-
- 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
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 |
---|---|---|---|
FR847062A FR1282691A (fr) | 1960-12-15 | 1960-12-15 | Perfectionnement aux cathodes à oxydes à chauffage indirect pour tubes électroniques |
Publications (1)
Publication Number | Publication Date |
---|---|
GB994471A true GB994471A (en) | 1965-06-10 |
Family
ID=8744850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB44443/61A Expired GB994471A (en) | 1960-12-15 | 1961-12-12 | Improvements relating to indirectly heated cathodes for use in electron valves |
Country Status (6)
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2482139A1 (fr) * | 1980-05-09 | 1981-11-13 | Philips Nv | Procede permettant de munir une piece metallique d'une surface noire, et cathode obtenue par ce procede |
GB2174237A (en) * | 1985-03-18 | 1986-10-29 | Hitachi Ltd | Indirectly heated cathode manufacture |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3500454A (en) * | 1967-11-16 | 1970-03-10 | Sylvania Electric Prod | Insulator heater coating for heater-cathode assembly |
US3958146A (en) * | 1974-02-08 | 1976-05-18 | Gte Sylvania Incorporated | Fast warm up picture tube cathode cap having high heat emissivity surface on the interior thereof |
US4009409A (en) * | 1975-09-02 | 1977-02-22 | Gte Sylvania Incorporated | Fast warmup cathode and method of making same |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE489888A (US08158827-20120417-C00057.png) * | 1947-02-15 | Gen Electric | ||
BE518861A (US08158827-20120417-C00057.png) * | 1952-04-01 | |||
US2817572A (en) * | 1954-04-06 | 1957-12-24 | Telefunken Ges Fur Drahtlase T | Electrodes for electron discharge tubes |
US2891879A (en) * | 1957-07-26 | 1959-06-23 | Westinghouse Electric Corp | Black coating of high thermal emissivity and process for applying the same |
NL95320C (US08158827-20120417-C00057.png) * | 1957-10-04 | |||
US2987423A (en) * | 1958-09-26 | 1961-06-06 | Rca Corp | Heat radiating coatings |
US3068337A (en) * | 1958-12-05 | 1962-12-11 | Gen Electric | Vaporizer and method for making the same |
NL101694C (US08158827-20120417-C00057.png) * | 1959-03-06 |
-
0
- NL NL272248D patent/NL272248A/xx unknown
-
1960
- 1960-12-15 FR FR847062A patent/FR1282691A/fr not_active Expired
-
1961
- 1961-12-12 LU LU40949D patent/LU40949A1/xx unknown
- 1961-12-12 GB GB44443/61A patent/GB994471A/en not_active Expired
- 1961-12-12 DE DEN20942A patent/DE1146207B/de active Pending
- 1961-12-14 US US159255A patent/US3262814A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2482139A1 (fr) * | 1980-05-09 | 1981-11-13 | Philips Nv | Procede permettant de munir une piece metallique d'une surface noire, et cathode obtenue par ce procede |
GB2174237A (en) * | 1985-03-18 | 1986-10-29 | Hitachi Ltd | Indirectly heated cathode manufacture |
GB2174237B (en) * | 1985-03-18 | 1989-10-04 | Hitachi Ltd | A manufacturing method of indirectly heated cathode |
US5102363A (en) * | 1985-03-18 | 1992-04-07 | Hitachi, Ltd. | Manufacturing method of indirectly heated cathode |
Also Published As
Publication number | Publication date |
---|---|
NL272248A (US08158827-20120417-C00057.png) | |
FR1282691A (fr) | 1962-01-27 |
LU40949A1 (US08158827-20120417-C00057.png) | 1962-02-12 |
US3262814A (en) | 1966-07-26 |
DE1146207B (de) | 1963-03-28 |
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