GB598898A - Electron discharge devices - Google Patents
Electron discharge devicesInfo
- Publication number
- GB598898A GB598898A GB18952/44A GB1895244A GB598898A GB 598898 A GB598898 A GB 598898A GB 18952/44 A GB18952/44 A GB 18952/44A GB 1895244 A GB1895244 A GB 1895244A GB 598898 A GB598898 A GB 598898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- cylindrical conductor
- screwed
- exhaust tube
- central
- 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
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
-
- 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
- H01J2893/0002—Construction arrangements of electrode systems
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
598,898. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. Oct. 3, 1944, No. 18952. Convention date, May 7, 1943. [Class 39 (i)] In an electron discharge device of the type having a metal grid supporting disc extending through a glass envelope, a metal member 'carrying a central lead rod supporting the cathode, extends through and is screw-threaded externally of the envelope so that it may be connected to a cylindrical conductor positioned about a bulbular part of the envelope. As shown in Fig. 1, the member 20 supporting a plurality of filament leads 22 has a shoulder 24, to which is screwed a cylindrical conductor 26. The central filament lead 28, forming a condenser with the coaxial sleeve 42, is screwed into the cylindrical member 30, which is threaded at 34 to a second cylindrical conductor 36 and which is secured to the exhaust tube 38. In an alternative embodiment, Fig. 3 (not shown), the filament leads extend through the exhaust tube, and the central lead rod is screwed in the cathode support, to which the exhaust tube is sealed directly the intermediate member 30 and second cylindrical conductor being omitted. The grid supporting disc 14 may alternatively be generally conical and joined to the cathode support by a conical glass portion of the envelope.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US598898XA | 1943-05-07 | 1943-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB598898A true GB598898A (en) | 1948-03-01 |
Family
ID=22025929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18952/44A Expired GB598898A (en) | 1943-05-07 | 1944-10-03 | Electron discharge devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB598898A (en) |
-
1944
- 1944-10-03 GB GB18952/44A patent/GB598898A/en not_active Expired
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