GB311654A - Improvements relating to thermionic valves - Google Patents
Improvements relating to thermionic valvesInfo
- Publication number
- GB311654A GB311654A GB14820/29A GB1482029A GB311654A GB 311654 A GB311654 A GB 311654A GB 14820/29 A GB14820/29 A GB 14820/29A GB 1482029 A GB1482029 A GB 1482029A GB 311654 A GB311654 A GB 311654A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- space
- heated
- effect
- valve
- 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
- 239000000463 material Substances 0.000 abstract 4
- 239000004020 conductor Substances 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 3
- 239000000126 substance Substances 0.000 abstract 2
- 230000003213 activating effect Effects 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
- H01J9/39—Degassing vessels
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
311,654. Loewe, B. May 12, 1928, [Convention date]. Vacuum tubes.-In a method for dispersing substances exercising a getter action or for activating a cathode, conductors are provided in the valve and so shaped that portions thereof are more strongly heated by the eddy currents induced, the substance to be dispersed being disposed at these portions. In one manner of carrying the invention into effect, the anode of a thermionic valve is utilized as the conductor and the materials described in Specification 306,960 are placed on the interior of the anode at the highly heated portion. Narrow longitudinal slots 2 are formed in the anode 1, the effect being to concentrate the eddy currents into a small space 3 between the slots, a tablet 4 of the material to be dispersed being placed on the space in the interior of the anode. To increase the effect of the slots 2, sheets of mica 5 are inserted therein. Where the material to be heated is an electric conductor, the space 3 is made very small and the material is not in contact with the anode, being heated by radiation from the space 3 and carried by an independent support from the footstep of the valve.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE311654X | 1928-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB311654A true GB311654A (en) | 1930-09-15 |
Family
ID=6130851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14820/29A Expired GB311654A (en) | 1928-05-12 | 1929-05-13 | Improvements relating to thermionic valves |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1875744A (en) |
| FR (1) | FR674931A (en) |
| GB (1) | GB311654A (en) |
| NL (1) | NL29687C (en) |
-
0
- NL NL29687D patent/NL29687C/xx active
-
1929
- 1929-05-11 FR FR674931D patent/FR674931A/en not_active Expired
- 1929-05-13 GB GB14820/29A patent/GB311654A/en not_active Expired
- 1929-05-23 US US365340A patent/US1875744A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR674931A (en) | 1930-02-04 |
| US1875744A (en) | 1932-09-06 |
| NL29687C (en) |
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