IT500079A - - Google Patents
Info
- Publication number
- IT500079A IT500079A IT500079DA IT500079A IT 500079 A IT500079 A IT 500079A IT 500079D A IT500079D A IT 500079DA IT 500079 A IT500079 A IT 500079A
- Authority
- IT
- Italy
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
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
- H01J9/047—Cathodes having impregnated bodies
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Powder Metallurgy (AREA)
- Discharge Lamp (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US273607A US2700000A (en) | 1952-02-27 | 1952-02-27 | Thermionic cathode and method of manufacturing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT500079A true IT500079A (en:Method) |
Family
ID=23044673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT500079D IT500079A (en:Method) | 1952-02-27 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US2700000A (en:Method) |
| BE (1) | BE517981A (en:Method) |
| CH (1) | CH318053A (en:Method) |
| DE (1) | DE1089483B (en:Method) |
| ES (2) | ES207960A1 (en:Method) |
| FR (1) | FR1077589A (en:Method) |
| GB (1) | GB734311A (en:Method) |
| IT (1) | IT500079A (en:Method) |
| NL (1) | NL96177C (en:Method) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE548876A (en:Method) * | 1953-08-14 | |||
| US2899592A (en) * | 1953-11-18 | 1959-08-11 | coppola | |
| US2813807A (en) * | 1954-07-19 | 1957-11-19 | Philips Corp | Method of making a dispenser cathode |
| US3041209A (en) * | 1955-06-28 | 1962-06-26 | Gen Electric | Method of making a thermionic cathode |
| BE559450A (en:Method) * | 1956-07-24 | |||
| BE561832A (en:Method) * | 1956-10-24 | |||
| BE563664A (en:Method) * | 1957-01-03 | |||
| US3075066A (en) * | 1957-12-03 | 1963-01-22 | Union Carbide Corp | Article of manufacture and method of making same |
| US2975320A (en) * | 1958-12-03 | 1961-03-14 | Rca Corp | Low-temperature plasma source |
| US3076916A (en) * | 1959-01-21 | 1963-02-05 | Semicon Associates Inc | Impregnated tungsten cathode structures and methods for fabricating same |
| US2995674A (en) * | 1959-02-27 | 1961-08-08 | Raytheon Co | Impregnated cathodes |
| US3155864A (en) * | 1960-03-21 | 1964-11-03 | Gen Electric | Dispenser cathode |
| NL266639A (en:Method) * | 1960-07-05 | |||
| US3160780A (en) * | 1961-01-17 | 1964-12-08 | Philips Corp | Indirectly heated cathode |
| US3258636A (en) * | 1961-09-01 | 1966-06-28 | Electron emitter with activator of sill cide, boride or carbide of solid solu- tion of barium and at least one other alkaline earth metal | |
| NL6515843A (en:Method) * | 1965-12-07 | 1967-06-08 | ||
| NL6602973A (en:Method) * | 1966-03-08 | 1967-09-11 | ||
| US3514324A (en) * | 1967-05-01 | 1970-05-26 | Kopco Ind | Tungsten coating of dispenser cathode |
| US3538570A (en) * | 1968-02-28 | 1970-11-10 | Otto G Koppius | Thermionic dispenser cathode |
| US4097762A (en) * | 1975-08-14 | 1978-06-27 | International Telephone & Telegraph Corporation | Xenon arc discharge lamp having a particular electrode composition and wherein the arc discharge is obtained without heating the electrode |
| US4636749A (en) * | 1979-08-13 | 1987-01-13 | Brunswick Corporation | Pulsed magnetron tube having improved electron emitter assembly |
| US4377505A (en) * | 1980-12-29 | 1983-03-22 | General Electric Company | Electrical resistor and fabrication thereof |
| FR2514945A1 (fr) * | 1981-10-20 | 1983-04-22 | Thomson Csf | Cathode a chauffage indirect et tube electronique, a rayons cathodiques notamment, muni d'une telle cathode |
| EP0160094A4 (en) * | 1983-11-02 | 1988-06-16 | Brunswick Corp | TUNING DEVICE FOR HIGH FREQUENCY POWER APPARATUS. |
| US4675570A (en) * | 1984-04-02 | 1987-06-23 | Varian Associates, Inc. | Tungsten-iridium impregnated cathode |
| US5418070A (en) * | 1988-04-28 | 1995-05-23 | Varian Associates, Inc. | Tri-layer impregnated cathode |
| KR920003185B1 (ko) * | 1990-01-31 | 1992-04-23 | 삼성전관 주식회사 | 디스펜서형 음극 및 그 제조방법 |
| JP2985467B2 (ja) * | 1992-01-22 | 1999-11-29 | 三菱電機株式会社 | 含浸型カソードの製造方法 |
| DE19652822A1 (de) * | 1996-12-18 | 1998-06-25 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Sinterelektrode |
| US20090284124A1 (en) * | 2008-04-22 | 2009-11-19 | Wolfgang Kutschera | Cathode composed of materials with different electron works functions |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL15389C (en:Method) * | 1923-01-12 | |||
| CH159791A (de) * | 1931-02-14 | 1933-01-31 | Aeg | Glühkathode für elektrische Entladungsgefässe. |
| US2389060A (en) * | 1943-08-13 | 1945-11-13 | Callite Tungsten Corp | Refractory body of high electronic emission |
| US2547869A (en) * | 1947-10-31 | 1951-04-03 | Sylvania Electric Prod | Fluorescent lamp electrode |
-
0
- NL NL96177D patent/NL96177C/xx active
- IT IT500079D patent/IT500079A/it unknown
- BE BE517981D patent/BE517981A/xx unknown
-
1952
- 1952-02-27 US US273607A patent/US2700000A/en not_active Expired - Lifetime
-
1953
- 1953-02-24 ES ES0207960A patent/ES207960A1/es not_active Expired
- 1953-02-25 GB GB5269/53A patent/GB734311A/en not_active Expired
- 1953-02-25 DE DEN6805A patent/DE1089483B/de active Pending
- 1953-02-25 CH CH318053D patent/CH318053A/de unknown
- 1953-02-25 FR FR1077589D patent/FR1077589A/fr not_active Expired
- 1953-06-01 ES ES0209589A patent/ES209589A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES207960A1 (es) | 1953-07-16 |
| US2700000A (en) | 1955-01-18 |
| FR1077589A (fr) | 1954-11-09 |
| GB734311A (en) | 1955-07-27 |
| NL96177C (en:Method) | |
| BE517981A (en:Method) | |
| CH318053A (de) | 1956-12-15 |
| ES209589A1 (es) | 1953-07-16 |
| DE1089483B (de) | 1960-09-22 |