GB626710A - Improvements in electric discharge tubes, having a secondary-emission electrode - Google Patents
Improvements in electric discharge tubes, having a secondary-emission electrodeInfo
- Publication number
- GB626710A GB626710A GB21889/46A GB2188946A GB626710A GB 626710 A GB626710 A GB 626710A GB 21889/46 A GB21889/46 A GB 21889/46A GB 2188946 A GB2188946 A GB 2188946A GB 626710 A GB626710 A GB 626710A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- electrode
- secondary electrode
- emission electrode
- curved
- 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
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes
Landscapes
- Particle Accelerators (AREA)
- Discharge Lamp (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
626,710. Electron discharge apparatus. PHILIPS LAMPS, Ltd. July 23, 1946, No. 21889. Convention date, Feb. 15, 1943. [Class 39 (i)] In an electron discharge device having a secondary-emission electrode, the anode is curved with its convex side facing the secondary electrode in such manner that the distance between the anode and the secondary electrode decreases with an increase in distance from the primary cathode and the anode is not positioned between the primary cathode and the secondary electrode. Preferably, the secondary electrode is curved in the same sense as the anode. In a push-pull arrangement as shown, the secondary electrode 4 is common to both electrode systems 3, but has an active face 7 associated with each anode 5. The Specification as open to inspection under Sect. 91 states that the secondary electrode and the anodes may be so designed that they have circular symmetry about a common axis. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL239640X | 1943-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB626710A true GB626710A (en) | 1949-07-20 |
Family
ID=19780468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21889/46A Expired GB626710A (en) | 1943-02-15 | 1946-07-23 | Improvements in electric discharge tubes, having a secondary-emission electrode |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2537923A (en) |
| BE (1) | BE454404A (en) |
| CH (1) | CH239640A (en) |
| DE (1) | DE856768C (en) |
| FR (1) | FR901951A (en) |
| GB (1) | GB626710A (en) |
| NL (1) | NL59460C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2674661A (en) * | 1948-08-12 | 1954-04-06 | Rca Corp | Electron multiplier device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2735936A (en) * | 1956-02-21 | gridley | ||
| US2675431A (en) * | 1949-08-18 | 1954-04-13 | Nat Union Radio Corp | Transit time compensated multiplier tube |
| US2670738A (en) * | 1952-03-14 | 1954-03-02 | Gibbons Thomas | Ear protector |
| US2819426A (en) * | 1956-04-05 | 1958-01-07 | Rca Corp | Electron discharge device |
| US5990601A (en) * | 1971-02-22 | 1999-11-23 | Itt Manufacturing Enterprises, Inc. | Electron multiplier and methods and apparatus for processing the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1704155A (en) * | 1923-07-27 | 1929-03-05 | Albert G Thomas | Vacuum tube |
| US2037352A (en) * | 1929-01-12 | 1936-04-14 | Rca Corp | Electronic vacuum tube |
| US2293417A (en) * | 1940-07-27 | 1942-08-18 | Rca Corp | Electron beam tube |
| US2416302A (en) * | 1941-01-07 | 1947-02-25 | Bell Telephone Labor Inc | Electronic apparatus |
| US2393803A (en) * | 1945-01-27 | 1946-01-29 | Rca Corp | Method of making long life secondary electron emitters |
-
0
- NL NL59460D patent/NL59460C/xx active
- BE BE454404D patent/BE454404A/xx unknown
-
1944
- 1944-02-11 DE DEN2419D patent/DE856768C/en not_active Expired
- 1944-02-12 CH CH239640D patent/CH239640A/en unknown
- 1944-02-14 FR FR901951D patent/FR901951A/en not_active Expired
-
1946
- 1946-04-22 US US663822A patent/US2537923A/en not_active Expired - Lifetime
- 1946-07-23 GB GB21889/46A patent/GB626710A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2674661A (en) * | 1948-08-12 | 1954-04-06 | Rca Corp | Electron multiplier device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR901951A (en) | 1945-08-14 |
| BE454404A (en) | |
| DE856768C (en) | 1952-11-24 |
| NL59460C (en) | |
| US2537923A (en) | 1951-01-09 |
| CH239640A (en) | 1945-10-31 |
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