NL7404521A - - Google Patents
Info
- Publication number
- NL7404521A NL7404521A NL7404521A NL7404521A NL7404521A NL 7404521 A NL7404521 A NL 7404521A NL 7404521 A NL7404521 A NL 7404521A NL 7404521 A NL7404521 A NL 7404521A NL 7404521 A NL7404521 A NL 7404521A
- Authority
- NL
- Netherlands
Links
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/04—Cathodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2317446A DE2317446C3 (de) | 1973-04-06 | 1973-04-06 | Verfahren zum Herstellen eines Heizelementes für eine indirekt geheizte Kathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7404521A true NL7404521A (enExample) | 1974-10-08 |
Family
ID=5877284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7404521A NL7404521A (enExample) | 1973-04-06 | 1974-04-03 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3902093A (enExample) |
| JP (1) | JPS5513102B2 (enExample) |
| BE (1) | BE813271R (enExample) |
| CA (1) | CA1032592A (enExample) |
| DE (1) | DE2317446C3 (enExample) |
| ES (1) | ES425053A1 (enExample) |
| FR (1) | FR2224866B1 (enExample) |
| GB (1) | GB1461495A (enExample) |
| IT (1) | IT1007777B (enExample) |
| NL (1) | NL7404521A (enExample) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4000435A (en) * | 1975-06-20 | 1976-12-28 | Westinghouse Electric Corporation | Electron gun cathode with a fast warm-up characteristic |
| JPS5952503B2 (ja) * | 1975-11-07 | 1984-12-20 | 株式会社日立製作所 | 直熱形酸化物陰極用基体金属板 |
| JPS5471550A (en) * | 1977-11-18 | 1979-06-08 | Hitachi Ltd | Base metal material for direct heating oxide cathode |
| DE2835490C2 (de) * | 1978-08-12 | 1986-09-18 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Verfahren zur Herstellung einer indirekt geheizten Kathode |
| DE2938248A1 (de) * | 1979-09-21 | 1981-03-26 | Standard Elektrik Lorenz AG, 70435 Stuttgart | Heizelement fuer eine indirekt geheizte kathode |
| JPS573039U (enExample) * | 1980-06-06 | 1982-01-08 | ||
| DE3029853C2 (de) * | 1980-08-07 | 1982-08-26 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Indirekt durch Elektronenstoß geheizte Wehneltkathode |
| DE19828158C1 (de) * | 1998-06-24 | 1999-11-25 | Siemens Ag | Indirekt geheizte Kathode, insbesondere für Röntgenröhren |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1017292B (de) * | 1956-07-18 | 1957-10-10 | Telefunken Gmbh | Aluminiumoxydueberzug fuer den Heizdraht mittelbar geheizter Kathoden elektrischer Entladungsroehren und Verfahren zur Herstellung eines Isolierueberzuges auf einem Heizdraht |
| US3029360A (en) * | 1958-04-29 | 1962-04-10 | Rca Corp | Heater wire coating process |
| NL268393A (enExample) * | 1960-08-19 | |||
| DE1146594B (de) * | 1961-10-31 | 1963-04-04 | Standard Elektrik Lorenz Ag | Aus zwei Schichten bestehender Isolationsueberzug fuer das Heizelement mittelbar geheizter Kathoden elektrischer Entladungsroehren und Verfahren zu seiner Herstellung |
| DE1133835B (de) * | 1961-12-16 | 1962-07-26 | Telefunken Patent | Verfahren zur Herstellung einer mittelbar geheizten Kathode fuer eine elektrische Entladungsroehre |
| NL113095C (enExample) * | 1961-12-22 | |||
| NL281567A (enExample) * | 1962-07-30 | |||
| DE1281038B (de) * | 1962-08-01 | 1968-10-24 | Telefunken Patent | Verfahren zur Herstellung einer mittelbar geheizten Kathode fuer eine elektrische Entladungsroehre |
| US3246197A (en) * | 1962-10-02 | 1966-04-12 | Westinghouse Electric Corp | Cathode heater having an aluminum oxide and tungesten coating |
| US3372297A (en) * | 1964-09-28 | 1968-03-05 | Varian Associates | High frequency electron discharge devices and thermionic cathodes having improved (cvd) refractory insulation coated heater wires |
| US3737714A (en) * | 1964-12-18 | 1973-06-05 | Sylvania Electric Prod | Dark coated heater for vacuum tube cathode |
| US3401297A (en) * | 1965-08-23 | 1968-09-10 | Varian Associates | Thermionic cathodes for electron discharge devices with improved refractory metal heater wires |
| US3558966A (en) * | 1967-03-01 | 1971-01-26 | Semicon Associates Inc | Directly heated dispenser cathode |
| US3500454A (en) * | 1967-11-16 | 1970-03-10 | Sylvania Electric Prod | Insulator heater coating for heater-cathode assembly |
| US3531678A (en) * | 1968-06-24 | 1970-09-29 | Raytheon Co | Heater with boron nitride coating |
| US3765939A (en) * | 1972-05-10 | 1973-10-16 | Gte Sylvania Inc | Method of coating cathode heaters |
-
1973
- 1973-04-06 DE DE2317446A patent/DE2317446C3/de not_active Expired
- 1973-11-12 US US415256A patent/US3902093A/en not_active Expired - Lifetime
-
1974
- 1974-04-03 NL NL7404521A patent/NL7404521A/xx unknown
- 1974-04-04 BE BE2053530A patent/BE813271R/xx not_active IP Right Cessation
- 1974-04-05 GB GB1525974A patent/GB1461495A/en not_active Expired
- 1974-04-05 CA CA196,909A patent/CA1032592A/en not_active Expired
- 1974-04-05 JP JP3809774A patent/JPS5513102B2/ja not_active Expired
- 1974-04-06 ES ES425053A patent/ES425053A1/es not_active Expired
- 1974-04-08 FR FR7412243A patent/FR2224866B1/fr not_active Expired
- 1974-04-08 IT IT20992/74A patent/IT1007777B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5513102B2 (enExample) | 1980-04-07 |
| FR2224866B1 (enExample) | 1978-11-03 |
| US3902093A (en) | 1975-08-26 |
| GB1461495A (en) | 1977-01-13 |
| CA1032592A (en) | 1978-06-06 |
| DE2317446C3 (de) | 1983-11-10 |
| IT1007777B (it) | 1976-10-30 |
| DE2317446B2 (de) | 1977-08-18 |
| FR2224866A1 (enExample) | 1974-10-31 |
| ES425053A1 (es) | 1976-11-16 |
| JPS5052962A (enExample) | 1975-05-10 |
| DE2317446A1 (de) | 1974-10-24 |
| BE813271R (nl) | 1974-10-04 |