BE486753A - - Google Patents
Info
- Publication number
- BE486753A BE486753A BE486753DA BE486753A BE 486753 A BE486753 A BE 486753A BE 486753D A BE486753D A BE 486753DA BE 486753 A BE486753 A BE 486753A
- Authority
- BE
- Belgium
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
-
- 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
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/027—Construction of the gun or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2402A US2499192A (en) | 1948-01-15 | 1948-01-15 | Dispenser type cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE486753A true BE486753A (it) |
Family
ID=21700589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE486753D BE486753A (it) | 1948-01-15 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2499192A (it) |
| BE (1) | BE486753A (it) |
| FR (1) | FR979177A (it) |
| GB (1) | GB685444A (it) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2719244A (en) * | 1952-01-25 | 1955-09-27 | Westinghouse Electric Corp | Electrical discharge tube |
| BE519027A (it) * | 1952-04-09 | |||
| FR1078606A (fr) * | 1953-04-02 | 1954-11-19 | Csf | Perfectionnements aux cathodes émissives |
| US3113236A (en) * | 1959-06-23 | 1963-12-03 | Philips Corp | Oxide dispenser type cathode |
| US3105917A (en) * | 1960-02-11 | 1963-10-01 | Philips Corp | Electric discharge device comprising an activated cold cathode |
| DE1217503B (de) * | 1964-12-02 | 1966-05-26 | Siemens Ag | Vorratskathode fuer elektrische Entladungsgefaesse |
| US3405303A (en) * | 1964-12-29 | 1968-10-08 | Sylvania Electric Prod | Arc discharge tube having an electrode which contains a light-emitting metal |
| US3706115A (en) * | 1971-02-09 | 1972-12-19 | Robert F Bleile | Staple for sod and erosion control mattings |
| US4243624A (en) * | 1979-05-21 | 1981-01-06 | Exxon Research & Engineering Co. | Method of making cathodes derived from ammonium-metal-chalcogen compounds |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL24414C (it) * | 1926-06-09 | |||
| US1813704A (en) * | 1928-06-26 | 1931-07-07 | Westinghouse Lamp Co | Cathode |
| US1946603A (en) * | 1929-05-09 | 1934-02-13 | Electrons Inc | Cathode for electrical discharge devices |
| US2007932A (en) * | 1930-08-23 | 1935-07-09 | Sirian Lamp Co | Surge arrester |
| US2007926A (en) * | 1930-10-21 | 1935-07-09 | Sirian Lamp Co | Light emitting unit |
| US2107945A (en) * | 1934-11-20 | 1938-02-08 | Gen Electric | Cathode structure |
| US2175345A (en) * | 1935-07-12 | 1939-10-10 | Gen Electric | Electric gaseous discharge device |
-
0
- BE BE486753D patent/BE486753A/xx unknown
-
1948
- 1948-01-15 US US2402A patent/US2499192A/en not_active Expired - Lifetime
-
1949
- 1949-01-07 GB GB513/49A patent/GB685444A/en not_active Expired
- 1949-01-14 FR FR979177D patent/FR979177A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2499192A (en) | 1950-02-28 |
| FR979177A (fr) | 1951-04-23 |
| GB685444A (en) | 1953-01-07 |