GB516111A - Improvements in electron discharge tubes - Google Patents
Improvements in electron discharge tubesInfo
- Publication number
- GB516111A GB516111A GB14722/38A GB1472238A GB516111A GB 516111 A GB516111 A GB 516111A GB 14722/38 A GB14722/38 A GB 14722/38A GB 1472238 A GB1472238 A GB 1472238A GB 516111 A GB516111 A GB 516111A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lead
- contact pins
- grid
- ins
- carries
- 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
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
- H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/02—Electron-emitting electrodes; Cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
- H01J5/12—Double-wall vessels or containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/48—Means forming part of the tube or lamp for the purpose of supporting it
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
Abstract
516,111. Thermionic valves. HYGRADE SYLVANIA CORPORATION. May 17. 1938, No. 14722. Convention date, Feb. 8, 1938. [A Specification was laid open to inspection under Section 91 of the Acts, Nov. 29, 1938.] [Class 39 (i)] In thermionic valves of the screened-grid type, the envelope 31, Fig. 5, is closed by a glass header 32, through which all the lead-ins to the electrodes are sealed, and a conductive shield 80 is provided on the interior face of the header and is surrounded by the lead-ins whereby the control grid lead-in is electrostatically shielded from one or more of the others. The lead-ins 35 are adapted to act as contact pins and are sealed through the header as described in Specification 516,110. The electrode system described consists of an indirectly heated cathode, control grid, screen grid, suppressor grid and anode mounted between mica discs. The mount is shielded by a metal cylinder 66, with closed ends and the shield is continued outside the envelope by a metal cap 70, the edge of which overlaps the lower end of the cylinder 66. The cap is apertured for the passage of the contact pins and carries a central tubular extension 75 with a locating rib adapted to co-operate with a grounded socket. The disc 80 is connected to the shielding cylinder 66 by arms 93, 94, Fig. 8, and also carries a shield 83 for the control grid lead-in. A mica bridge 90 is supported by the contact pins and carries metal straps and tabs 103, 104 by which the ends of the cathode heating filament may be soldered to its contact pins. Specification 516,167 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US145198A US2238025A (en) | 1937-05-28 | 1937-05-28 | Electron discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB516111A true GB516111A (en) | 1939-12-22 |
Family
ID=22512024
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14722/38A Expired GB516111A (en) | 1937-05-28 | 1938-05-17 | Improvements in electron discharge tubes |
| GB14721/38A Expired GB516110A (en) | 1937-05-28 | 1938-05-17 | Improvements in electron discharge tubes |
| GB17177/39A Expired GB516169A (en) | 1937-05-28 | 1938-05-17 | Improvements in bases or caps for electron discharge tubes |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14721/38A Expired GB516110A (en) | 1937-05-28 | 1938-05-17 | Improvements in electron discharge tubes |
| GB17177/39A Expired GB516169A (en) | 1937-05-28 | 1938-05-17 | Improvements in bases or caps for electron discharge tubes |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2238025A (en) |
| FR (1) | FR838493A (en) |
| GB (3) | GB516111A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE857538C (en) * | 1941-06-26 | 1952-12-01 | Telefunken Gmbh | Putty-free, twist-proof attachment of a base to the pipe piston |
| US2490110A (en) * | 1945-10-31 | 1949-12-06 | Int Standard Electric Corp | Vacuum tube |
| US3956658A (en) * | 1945-11-28 | 1976-05-11 | The United States Of America As Represented By The United States Energy Research And Development Administration | Low impedance switch |
| FR925404A (en) * | 1946-03-27 | 1947-09-03 | Radio Electr Soc Fr | Seasoning of vacuum tubes |
| US2934588A (en) * | 1958-05-08 | 1960-04-26 | Bell Telephone Labor Inc | Semiconductor housing structure |
| US4720155A (en) * | 1986-04-04 | 1988-01-19 | Amphenol Corporation | Databus coupler electrical connector |
-
1937
- 1937-05-28 US US145198A patent/US2238025A/en not_active Expired - Lifetime
-
1938
- 1938-05-17 GB GB14722/38A patent/GB516111A/en not_active Expired
- 1938-05-17 GB GB14721/38A patent/GB516110A/en not_active Expired
- 1938-05-17 GB GB17177/39A patent/GB516169A/en not_active Expired
- 1938-05-27 FR FR838493D patent/FR838493A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR838493A (en) | 1939-03-07 |
| GB516110A (en) | 1939-12-22 |
| US2238025A (en) | 1941-04-08 |
| GB516169A (en) | 1939-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2367331A (en) | Cathode construction | |
| GB516111A (en) | Improvements in electron discharge tubes | |
| US2337401A (en) | Base construction for electron tubes | |
| US2438181A (en) | Fluorescent and/or cathode glow lamp and method | |
| GB346957A (en) | Improvements in and relating to electron discharge devices | |
| US2176199A (en) | Electron-discharge tube | |
| GB687261A (en) | Improvements relating to electric discharge devices | |
| GB562178A (en) | Improvements in and relating to electric discharge devices | |
| US2523779A (en) | Ionization gauge | |
| GB516168A (en) | Improvements in electron discharge tubes | |
| US2100879A (en) | Electric lamp | |
| GB516167A (en) | Improvements in electron discharge tubes | |
| GB282712A (en) | Improvements relating to thermionic valves or electron discharge tubes | |
| US2374684A (en) | Push-pull electron tube | |
| GB377041A (en) | Improvements in or relating to gasfilled discharge tubes | |
| US1613612A (en) | Electron-discharge device | |
| US1931630A (en) | Four-electrode tube | |
| US1892066A (en) | Thermionic tube | |
| US1715150A (en) | X-ray tube | |
| US1868600A (en) | Vacuum tube | |
| US2040267A (en) | Electron discharge device | |
| US2019613A (en) | Sodium vapor lamp | |
| US1748713A (en) | Thermionic generator | |
| GB439879A (en) | Improvements in ionic amplifier or detector tube | |
| GB546846A (en) | Improvements in cathode-ray tubes |