EP0034512A3 - Elément chauffant pour cathode à chauffage indirect, procédé de fabrication d'un tel élément, et cathode à chauffage indirect comportant un tel élément - Google Patents
Elément chauffant pour cathode à chauffage indirect, procédé de fabrication d'un tel élément, et cathode à chauffage indirect comportant un tel élément Download PDFInfo
- Publication number
- EP0034512A3 EP0034512A3 EP81400096A EP81400096A EP0034512A3 EP 0034512 A3 EP0034512 A3 EP 0034512A3 EP 81400096 A EP81400096 A EP 81400096A EP 81400096 A EP81400096 A EP 81400096A EP 0034512 A3 EP0034512 A3 EP 0034512A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- indirectly heated
- manufacturing
- heating element
- same
- cathode
- Prior art date
- 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.)
- Withdrawn
Links
- 238000010438 heat treatment Methods 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 239000000203 mixture Substances 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 abstract 1
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
- H01J1/24—Insulating layer or body located between heater and emissive material
Landscapes
- Solid Thermionic Cathode (AREA)
- Powder Metallurgy (AREA)
Abstract
Cet élément chauffant est constitué d'un filament (3) et
d'un mélange (4), fritté entre 1700 et 1800°C, d'alumine et de
moins de 10 % en poids d'oxyde d'yttrium. Ce mélange rem
plit l'espace laissé libre par le filament à l'intérieur du cylindre
(2) obturé par un disque émissif (1) qui constitue la cathode.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8003410A FR2476386A1 (fr) | 1980-02-15 | 1980-02-15 | Element chauffant pour cathode a chauffage indirect, procede de fabrication d'un tel element et cathode a chauffage indirect comportant un tel element |
FR8003410 | 1980-02-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0034512A2 EP0034512A2 (fr) | 1981-08-26 |
EP0034512A3 true EP0034512A3 (fr) | 1982-05-26 |
Family
ID=9238641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81400096A Withdrawn EP0034512A3 (fr) | 1980-02-15 | 1981-01-23 | Elément chauffant pour cathode à chauffage indirect, procédé de fabrication d'un tel élément, et cathode à chauffage indirect comportant un tel élément |
Country Status (3)
Country | Link |
---|---|
US (1) | US4427916A (fr) |
EP (1) | EP0034512A3 (fr) |
FR (1) | FR2476386A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60189447U (ja) * | 1984-05-28 | 1985-12-16 | アップリカ葛西株式会社 | 自動車用子供安全シ−ト |
JPH0624093B2 (ja) * | 1984-12-26 | 1994-03-30 | 株式会社日立製作所 | 傍熱型陰極用ヒ−タ |
FR2664427A1 (fr) * | 1990-07-03 | 1992-01-10 | Thomson Tubes Electroniques | Cathode a chauffage indirect a filament integre pour tube a faisceau lineaire. |
US5065070A (en) * | 1990-12-21 | 1991-11-12 | Hughes Aircraft Company | Sputtered scandate coatings for dispenser cathodes |
US5208508A (en) * | 1991-09-16 | 1993-05-04 | Raytheon Company | Cathode heater potting assembly |
FR2681726A1 (fr) * | 1991-09-20 | 1993-03-26 | Thomson Tubes Electroniques | Potting isolant pour cathodes a chauffage indirect. |
US6777859B1 (en) | 1999-08-22 | 2004-08-17 | Ip2H Ag | Light source |
CN112490098B (zh) * | 2020-12-09 | 2023-03-14 | 成都国光电气股份有限公司 | 一种热丝组件用混合填充粉料及其制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1315581A (fr) * | 1961-02-24 | 1963-01-18 | Siemens Ag | Procédé pour fabriquer des corps frittés isolants tenant le vide |
US3400294A (en) * | 1964-12-07 | 1968-09-03 | Gen Electric | Heated cathode and method of manufacture |
DE1805821A1 (de) * | 1968-10-29 | 1970-06-04 | Telefunken Patent | Verfahren zum Herstellen einer indirekt geheizten thermischen Emissionskathode |
US3803441A (en) * | 1972-04-28 | 1974-04-09 | Tokyo Shibaura Electric Co | Indirectly heated type cathode devices using foil heater embedded in mixture of heat resistant dielectric and a metal |
-
1980
- 1980-02-15 FR FR8003410A patent/FR2476386A1/fr active Granted
-
1981
- 1981-01-23 EP EP81400096A patent/EP0034512A3/fr not_active Withdrawn
- 1981-02-09 US US06/232,571 patent/US4427916A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1315581A (fr) * | 1961-02-24 | 1963-01-18 | Siemens Ag | Procédé pour fabriquer des corps frittés isolants tenant le vide |
US3400294A (en) * | 1964-12-07 | 1968-09-03 | Gen Electric | Heated cathode and method of manufacture |
DE1805821A1 (de) * | 1968-10-29 | 1970-06-04 | Telefunken Patent | Verfahren zum Herstellen einer indirekt geheizten thermischen Emissionskathode |
US3803441A (en) * | 1972-04-28 | 1974-04-09 | Tokyo Shibaura Electric Co | Indirectly heated type cathode devices using foil heater embedded in mixture of heat resistant dielectric and a metal |
Also Published As
Publication number | Publication date |
---|---|
EP0034512A2 (fr) | 1981-08-26 |
FR2476386B1 (fr) | 1982-08-20 |
US4427916A (en) | 1984-01-24 |
FR2476386A1 (fr) | 1981-08-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE GB IT |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): DE GB IT |
|
17P | Request for examination filed |
Effective date: 19820608 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19860206 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SHROFF, ARVIND |