BE438749A - - Google Patents
Info
- Publication number
- BE438749A BE438749A BE438749DA BE438749A BE 438749 A BE438749 A BE 438749A BE 438749D A BE438749D A BE 438749DA BE 438749 A BE438749 A BE 438749A
- Authority
- BE
- Belgium
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
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/16—Cathodes heated directly by an electric current characterised by the shape
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
- H01J17/06—Cathodes
- H01J17/063—Indirectly heated cathodes, e.g. by the discharge itself
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US243101A US2201731A (en) | 1938-11-30 | 1938-11-30 | Discharge tube electrode assembly |
| US261395A US2201720A (en) | 1938-11-30 | 1939-03-11 | Thermionic cathode structure |
| US266803A US2246176A (en) | 1938-11-30 | 1939-04-08 | Thermionic discharge device |
| US283803A US2201721A (en) | 1938-11-30 | 1939-07-11 | Thermionic cathode structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE438749A true BE438749A (nl) | 1940-10-31 |
Family
ID=42358497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE438749D BE438749A (nl) | 1938-11-30 | 1940-09-21 |
Country Status (5)
| Country | Link |
|---|---|
| US (4) | US2201731A (nl) |
| BE (1) | BE438749A (nl) |
| FR (2) | FR861969A (nl) |
| GB (2) | GB536070A (nl) |
| NL (1) | NL55022C (nl) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE477491A (nl) * | 1943-05-28 | |||
| US2456649A (en) * | 1943-06-12 | 1948-12-21 | Glenn F Rouse | Cathode |
| US2675498A (en) * | 1948-12-07 | 1954-04-13 | Raytheon Mfg Co | Cathode for electron discharge devices |
| US2605432A (en) * | 1949-10-19 | 1952-07-29 | Electrons Inc | Indirectly heated cathode structure |
| US2647216A (en) * | 1950-04-01 | 1953-07-28 | Rca Corp | Dispenser cathode |
| US2610305A (en) * | 1951-01-05 | 1952-09-09 | Chatham Electronics Corp | Control electrode for discharge tubes |
| DE962188C (de) * | 1951-10-12 | 1957-04-18 | Philips Nv | Elektrische Entladungsroehre mit Quecksilberkathode und Gasfuellung |
| DE1018164B (de) * | 1952-12-04 | 1957-10-24 | Siemens Ag | Gasentladungsroehre |
| GB931059A (en) * | 1961-02-10 | 1963-07-10 | Thorn Electrical Ind Ltd | Improvements in and relating to thermionic cathodes |
| NL141698B (nl) * | 1964-12-10 | 1974-03-15 | Philips Nv | Indirect verhitte kathode voor een elektrische ontladingsbuis. |
| GB1204316A (en) * | 1966-09-26 | 1970-09-03 | Atomic Energy Authority Uk | Improvements in or relating to electron emitting cathodes for irradiation machines |
| US3534218A (en) * | 1967-03-30 | 1970-10-13 | Atomic Energy Authority Uk | Electron emitting cathodes for irradiation machines |
| US4611147A (en) * | 1984-04-05 | 1986-09-09 | The United States Of America As Represented By The United States Department Of Energy | Thermionic gas switch |
-
1938
- 1938-11-30 US US243101A patent/US2201731A/en not_active Expired - Lifetime
-
1939
- 1939-03-11 US US261395A patent/US2201720A/en not_active Expired - Lifetime
- 1939-04-08 US US266803A patent/US2246176A/en not_active Expired - Lifetime
- 1939-07-11 US US283803A patent/US2201721A/en not_active Expired - Lifetime
- 1939-11-30 GB GB31133/39A patent/GB536070A/en not_active Expired
- 1939-11-30 FR FR861969D patent/FR861969A/fr not_active Expired
- 1939-11-30 NL NL96091A patent/NL55022C/xx active
-
1940
- 1940-03-11 FR FR51138D patent/FR51138E/fr not_active Expired
- 1940-07-09 GB GB11440/40A patent/GB542495A/en not_active Expired
- 1940-09-21 BE BE438749D patent/BE438749A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB536070A (en) | 1941-05-01 |
| FR51138E (fr) | 1941-08-08 |
| GB542495A (en) | 1942-01-12 |
| NL55022C (nl) | 1943-08-16 |
| US2201720A (en) | 1940-05-21 |
| US2201721A (en) | 1940-05-21 |
| FR861969A (fr) | 1941-02-22 |
| US2201731A (en) | 1940-05-21 |
| US2246176A (en) | 1941-06-17 |