FR1490577A - Cage-Shaped Direct Heating Cathode Improvements - Google Patents
Cage-Shaped Direct Heating Cathode ImprovementsInfo
- Publication number
- FR1490577A FR1490577A FR61990A FR61990A FR1490577A FR 1490577 A FR1490577 A FR 1490577A FR 61990 A FR61990 A FR 61990A FR 61990 A FR61990 A FR 61990A FR 1490577 A FR1490577 A FR 1490577A
- Authority
- FR
- France
- Prior art keywords
- cage
- direct heating
- heating cathode
- shaped direct
- shaped
- 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.)
- Expired
Links
- 238000010438 heat treatment Methods 0.000 title 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
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/18—Supports; Vibration-damping arrangements
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR61990A FR1490577A (en) | 1966-05-18 | 1966-05-18 | Cage-Shaped Direct Heating Cathode Improvements |
US631464A US3473073A (en) | 1966-05-18 | 1967-04-17 | Electron tube having an improved direct-heated cathode structure |
CH555067A CH456776A (en) | 1966-05-18 | 1967-04-19 | Direct heated cathode for electron tubes |
NL6705621A NL6705621A (en) | 1966-05-18 | 1967-04-21 | |
GB21096/67A GB1179731A (en) | 1966-05-18 | 1967-05-05 | Electron Tube having an improved Directly-Heated Cathode Structure |
DE19671589608 DE1589608A1 (en) | 1966-05-18 | 1967-05-12 | Directly heated cathode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR61990A FR1490577A (en) | 1966-05-18 | 1966-05-18 | Cage-Shaped Direct Heating Cathode Improvements |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1490577A true FR1490577A (en) | 1967-08-04 |
Family
ID=8608894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR61990A Expired FR1490577A (en) | 1966-05-18 | 1966-05-18 | Cage-Shaped Direct Heating Cathode Improvements |
Country Status (6)
Country | Link |
---|---|
US (1) | US3473073A (en) |
CH (1) | CH456776A (en) |
DE (1) | DE1589608A1 (en) |
FR (1) | FR1490577A (en) |
GB (1) | GB1179731A (en) |
NL (1) | NL6705621A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3976909A (en) * | 1975-07-11 | 1976-08-24 | Rca Corporation | Wire mesh cathode |
SU1042105A1 (en) * | 1980-02-05 | 1983-09-15 | Организация П/Я Х-5263 | Grid-type filamentary cathode for vacuum tubes and its manufacture method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL76656C (en) * | 1949-05-06 | |||
GB709274A (en) * | 1950-05-16 | 1954-05-19 | Siemens Ag | Improvements in or relating to cathodes for electric discharge tubes |
US2928978A (en) * | 1956-08-03 | 1960-03-15 | Int Standard Electric Corp | Mounting of thermionic cathodes |
DE1146985B (en) * | 1960-11-04 | 1963-04-11 | Siemens Ag | Semi-indirectly heated cathode for electron tubes |
GB987461A (en) * | 1962-05-31 | 1965-03-31 | Standard Telephones Cables Ltd | Thermionic valves |
GB1017750A (en) * | 1963-12-12 | 1966-01-19 | Standard Telephones Cables Ltd | Thermionic cathodes |
-
1966
- 1966-05-18 FR FR61990A patent/FR1490577A/en not_active Expired
-
1967
- 1967-04-17 US US631464A patent/US3473073A/en not_active Expired - Lifetime
- 1967-04-19 CH CH555067A patent/CH456776A/en unknown
- 1967-04-21 NL NL6705621A patent/NL6705621A/xx unknown
- 1967-05-05 GB GB21096/67A patent/GB1179731A/en not_active Expired
- 1967-05-12 DE DE19671589608 patent/DE1589608A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
NL6705621A (en) | 1967-11-20 |
US3473073A (en) | 1969-10-14 |
CH456776A (en) | 1968-07-31 |
DE1589608A1 (en) | 1970-05-14 |
GB1179731A (en) | 1970-01-28 |
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