GB483708A - Improvements in or relating to electron discharge devices - Google Patents
Improvements in or relating to electron discharge devicesInfo
- Publication number
- GB483708A GB483708A GB28728/36A GB2872836A GB483708A GB 483708 A GB483708 A GB 483708A GB 28728/36 A GB28728/36 A GB 28728/36A GB 2872836 A GB2872836 A GB 2872836A GB 483708 A GB483708 A GB 483708A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- getter
- envelope
- tube
- oct
- 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
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- 229910000861 Mg alloy Inorganic materials 0.000 abstract 1
- IJBYNGRZBZDSDK-UHFFFAOYSA-N barium magnesium Chemical compound [Mg].[Ba] IJBYNGRZBZDSDK-UHFFFAOYSA-N 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 239000008188 pellet Substances 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/186—Getter supports
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
483,708. Thermionic valves. MARCONI'S WIRELESS-TELEGRAPH CO., Ltd. Oct. 22, 1936, No. 28728. Convention date, Oct. 22, 1935. [Class 39 (i)] A getter pellet 21 which may be of barium - magnesium alloy, is placed in the hollow end of the cathode tube or in a cup 20<1>, Fig. 3, fixed in the end of the tube 19 ; during the exhaustion of the tube the cathode heater 18 is raised to a sufficient temperature to break down the carbonate coating and then to flash the getter, this occurring when the gas pressure 'within the envelope has fallen to a sufficiently low level. The getter may be carried by a tab on the cathode sleeve to receive' heat by conduction from the cathode. The anode 14 is carried by three insulating supports 16, and the upper mica spacer 17 for the grid rods and cathode is held by springs 18<1> bearing on the envelope. The envelope when of metal is degassed by heating prior to flashing of the getter. Specification 153,331, [Class 39 (i)], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46056A US2167852A (en) | 1935-10-22 | 1935-10-22 | Electron discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB483708A true GB483708A (en) | 1938-04-22 |
Family
ID=21941343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28728/36A Expired GB483708A (en) | 1935-10-22 | 1936-10-22 | Improvements in or relating to electron discharge devices |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2167852A (en) |
| DE (1) | DE750230C (en) |
| FR (1) | FR811858A (en) |
| GB (1) | GB483708A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2480608A (en) * | 1945-02-06 | 1949-08-30 | Hivac Ltd | Electronic tube |
| BE529248A (en) * | 1953-06-04 | |||
| US2954490A (en) * | 1956-05-15 | 1960-09-27 | Bell Telephone Labor Inc | Crystal unit mounting |
| BE568937A (en) * | 1957-07-05 | |||
| NL223799A (en) * | 1957-10-12 | |||
| DE1089505B (en) * | 1958-08-02 | 1960-09-22 | Philips Nv | Ion pump with a discharge path lengthened by a magnetic field and a method for using such an ion pump |
| US3195716A (en) * | 1961-02-04 | 1965-07-20 | Porta Paolo Della | Mixed getter devices, with evaporated and not evaporated gettering material, for maintaining the vacuum in electronic tubes |
| US3225910A (en) * | 1961-02-04 | 1965-12-28 | Porta Paolo Della | Getter devices with non-evaporated gettering material, for maintaining vacuum in electronic tubes |
| US3278788A (en) * | 1962-07-16 | 1966-10-11 | Gen Electric | Internal feedback electric discharge device |
| ITMI20101519A1 (en) * | 2010-08-06 | 2012-02-07 | Getters Spa | IMPROVEMENTS FOR TUBES RECEIVERS OF SOLAR COLLECTORS |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR743972A (en) * | 1933-04-08 | |||
| CH119065A (en) * | 1926-01-21 | 1927-03-01 | Westinghouse Lamp Co | A method of introducing a vaporizable material into an envelope. |
| FR643300A (en) * | 1926-11-04 | 1928-09-13 | Siemens Ag | Process for improving the vacuum in discharge vessels |
| CH124219A (en) * | 1926-12-31 | 1928-01-16 | Metrum Ag | Process for the production of metallic absorption layers in electrical rectifier vessels. |
| FR731042A (en) * | 1931-02-12 | 1932-08-27 | Arcturus Radio Tube Co | Electronic discharge device |
| AT133287B (en) * | 1931-07-11 | 1933-05-10 | Mueller C H F Ag | Process in the manufacture of discharge vessels for generating and maintaining the vacuum. |
-
1935
- 1935-10-22 US US46056A patent/US2167852A/en not_active Expired - Lifetime
-
1936
- 1936-10-15 FR FR811858D patent/FR811858A/en not_active Expired
- 1936-10-22 GB GB28728/36A patent/GB483708A/en not_active Expired
- 1936-10-23 DE DER97653D patent/DE750230C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR811858A (en) | 1937-04-24 |
| DE750230C (en) | 1944-12-20 |
| US2167852A (en) | 1939-08-01 |
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