FR2099382A5 - - Google Patents
Info
- Publication number
- FR2099382A5 FR2099382A5 FR7127930A FR7127930A FR2099382A5 FR 2099382 A5 FR2099382 A5 FR 2099382A5 FR 7127930 A FR7127930 A FR 7127930A FR 7127930 A FR7127930 A FR 7127930A FR 2099382 A5 FR2099382 A5 FR 2099382A5
- Authority
- FR
- France
- 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
- H01J1/28—Dispenser-type cathodes, e.g. L-cathode
-
- 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
- H01J1/18—Supports; Vibration-damping arrangements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microwave Tubes (AREA)
- Solid Thermionic Cathode (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702037874 DE2037874B2 (en) | 1970-07-30 | 1970-07-30 | METHOD OF MAKING A SUPPLY CATHOD |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2099382A5 true FR2099382A5 (en) | 1972-03-10 |
Family
ID=5778400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7127930A Expired FR2099382A5 (en) | 1970-07-30 | 1971-07-29 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3758808A (en) |
DE (1) | DE2037874B2 (en) |
FR (1) | FR2099382A5 (en) |
GB (1) | GB1345819A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3983443A (en) * | 1975-03-24 | 1976-09-28 | Rca Corporation | Vacuum electron device having directly-heated matrix-cathode-heater assembly |
US4388551A (en) * | 1980-11-24 | 1983-06-14 | Zenith Radio Corporation | Quick-heating cathode structure |
GB8426319D0 (en) * | 1984-10-18 | 1984-11-21 | Oxford Lasers Ltd | Laser devices |
US4781640A (en) * | 1985-01-24 | 1988-11-01 | Varian Associates, Inc. | Basket electrode shaping |
EP0641007A3 (en) * | 1993-08-31 | 1995-06-21 | Samsung Display Devices Co Ltd | Direct-heating-type dispenser cathode structure. |
US6455990B1 (en) * | 1998-12-11 | 2002-09-24 | United Technologies Corporation | Apparatus for an electron gun employing a thermionic electron source |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2666158A (en) * | 1951-07-12 | 1954-01-12 | Polaroid Corp | Electric projection lamp |
US2975317A (en) * | 1959-04-07 | 1961-03-14 | Univ California | Beam control device |
GB962926A (en) * | 1962-03-19 | 1964-07-08 | Rank Bush Murphy Ltd | Improvements in thermionic cathodes and in methods of manufacturing such cathodes |
US3312856A (en) * | 1963-03-26 | 1967-04-04 | Gen Electric | Rhenium supported metallic boride cathode emitters |
US3441767A (en) * | 1967-02-01 | 1969-04-29 | Sylvania Electric Prod | Tensioned directly heated cathode having improved temperature characteristics |
JPS464029Y1 (en) * | 1968-05-28 | 1971-02-12 |
-
1970
- 1970-07-30 DE DE19702037874 patent/DE2037874B2/en active Granted
-
1971
- 1971-07-27 US US00166453A patent/US3758808A/en not_active Expired - Lifetime
- 1971-07-28 GB GB3553071A patent/GB1345819A/en not_active Expired
- 1971-07-29 FR FR7127930A patent/FR2099382A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1345819A (en) | 1974-02-06 |
DE2037874B2 (en) | 1972-12-14 |
US3758808A (en) | 1973-09-11 |
DE2037874A1 (en) | 1972-02-24 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |