GB1100195A - Improvements in indirectly heated cathodes - Google Patents
Improvements in indirectly heated cathodesInfo
- Publication number
- GB1100195A GB1100195A GB51832/65A GB5183265A GB1100195A GB 1100195 A GB1100195 A GB 1100195A GB 51832/65 A GB51832/65 A GB 51832/65A GB 5183265 A GB5183265 A GB 5183265A GB 1100195 A GB1100195 A GB 1100195A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heating element
- sleeve
- cathode
- inwardly projecting
- cathode sleeve
- 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
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
Landscapes
- Resistance Heating (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
1,100,195. Indirectly-heated cathodes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 7 Dec., 1965 [10 Dec., 1964], No. 51832/65. Heading H1D. An indirectly-heated cathode comprises a folded heating element accommodated in a tubular sleeve carrying the emissive layer, at least one inwardly projecting part of the material of the sleeve being provided near one end of the cathode sleeve to locate a fold of the heating element. Inwardly projecting parts formed by out-out portions 6, Fig. 5, of the cathode sleeve 1 may extend parallel or perpendicular to the sleeve axis. Alternatively, the inwardly projecting parts may be formed by re-entrant portions 7, Fig. 4, of the cathode sleeve, with, if necessary, the addition of a ceramic tube 8 clamped between portions 7. In the latter case, an uninsulated heating element may be used, the cathode sleeve being coated internally with an insulating layer 9. A single inward projection may locate two folds of a doubly-folded heating element, Fig. 6 (not shown). Precise location of the folds of the heating element ensures that the ends 5 of the heating element project a predetermined distance from the cathode sleeve for soldering, welding or clamping to current supply conductors.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL646414340A NL141698B (en) | 1964-12-10 | 1964-12-10 | INDIRECTLY HEATED CATHOD FOR AN ELECTRIC DISCHARGE TUBE. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1100195A true GB1100195A (en) | 1968-01-24 |
Family
ID=19791604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB51832/65A Expired GB1100195A (en) | 1964-12-10 | 1965-12-07 | Improvements in indirectly heated cathodes |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3366827A (en) |
| AT (1) | AT258426B (en) |
| BE (1) | BE673477A (en) |
| CH (1) | CH438499A (en) |
| DE (1) | DE1236663B (en) |
| ES (1) | ES320448A1 (en) |
| FR (1) | FR1457177A (en) |
| GB (1) | GB1100195A (en) |
| NL (1) | NL141698B (en) |
| NO (1) | NO116432B (en) |
| SE (1) | SE312381B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29703990U1 (en) * | 1997-03-05 | 1997-04-17 | Thielen Marcus Dipl Phys | Cold electrode for gas discharges |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2143915A (en) * | 1935-11-07 | 1939-01-17 | Telefunken Gmbh | Indirectly heated cathode |
| US2155237A (en) * | 1937-11-18 | 1939-04-18 | Gen Electric | Electric discharge device |
| US2201731A (en) * | 1938-11-30 | 1940-05-21 | Gen Electric | Discharge tube electrode assembly |
-
1964
- 1964-12-10 NL NL646414340A patent/NL141698B/en unknown
-
1965
- 1965-11-18 US US508464A patent/US3366827A/en not_active Expired - Lifetime
- 1965-12-06 CH CH1678165A patent/CH438499A/en unknown
- 1965-12-07 SE SE15819/65A patent/SE312381B/xx unknown
- 1965-12-07 ES ES0320448A patent/ES320448A1/en not_active Expired
- 1965-12-07 NO NO160805A patent/NO116432B/no unknown
- 1965-12-07 GB GB51832/65A patent/GB1100195A/en not_active Expired
- 1965-12-07 DE DEN27717A patent/DE1236663B/en active Pending
- 1965-12-07 AT AT1100165A patent/AT258426B/en active
- 1965-12-08 BE BE673477A patent/BE673477A/xx unknown
- 1965-12-09 FR FR41491A patent/FR1457177A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6414340A (en) | 1966-06-13 |
| SE312381B (en) | 1969-07-14 |
| FR1457177A (en) | 1966-10-28 |
| AT258426B (en) | 1967-11-27 |
| CH438499A (en) | 1967-06-30 |
| NL141698B (en) | 1974-03-15 |
| BE673477A (en) | 1966-06-08 |
| ES320448A1 (en) | 1966-07-01 |
| US3366827A (en) | 1968-01-30 |
| DE1236663B (en) | 1967-03-16 |
| NO116432B (en) | 1969-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1100195A (en) | Improvements in indirectly heated cathodes | |
| GB1454732A (en) | Device provided with a gas and/or vapour discharge tube | |
| US4007397A (en) | Arc discharge lamp with starter electrode voltage doubling | |
| GB1026061A (en) | Improvements in or relating to plasma tube arrangements | |
| US2886629A (en) | Electric lamp with flat terminal member | |
| GB777103A (en) | Improvements in electric discharge lamps | |
| GB1502876A (en) | Cathode ray tube | |
| GB580759A (en) | Improvements in electric cartridge-type fuses or resistances | |
| US2409361A (en) | Seal for electric lamps and similar devices | |
| US2504594A (en) | Device comprising a gas-and/or vapor-filled discharge tube | |
| US2398111A (en) | Discharge device | |
| US2014957A (en) | Stroboscopic apparatus | |
| US3320476A (en) | Starting circuit for high intensity short arc lamps | |
| US1889079A (en) | Vapor arc apparatus | |
| US2299679A (en) | Electric welding torch | |
| US2553184A (en) | Electron discharge device | |
| US2687471A (en) | Concentrated arc discharge device | |
| GB894812A (en) | Projection lamp | |
| US2591825A (en) | Gas tube circuit | |
| US2838714A (en) | Igniting and operating circuit for discharge tubes | |
| GB1028398A (en) | Improvements in electric heater arrangements | |
| US2094848A (en) | Gaseous and vapor electric discharge device | |
| US1638499A (en) | Electron-discharge device | |
| US1943388A (en) | Cathode device | |
| GB1071102A (en) | Electric discharge lamp |