GB921016A - Method of manufacturing field emission cathodes - Google Patents
Method of manufacturing field emission cathodesInfo
- Publication number
- GB921016A GB921016A GB2416459A GB2416459A GB921016A GB 921016 A GB921016 A GB 921016A GB 2416459 A GB2416459 A GB 2416459A GB 2416459 A GB2416459 A GB 2416459A GB 921016 A GB921016 A GB 921016A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- bunch
- july
- holder
- sodium nitrite
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 abstract 4
- 238000005530 etching Methods 0.000 abstract 2
- 235000010288 sodium nitrite Nutrition 0.000 abstract 2
- 229910000906 Bronze Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/30—Cold cathodes, e.g. field-emissive cathode
- H01J1/304—Field-emissive cathodes
-
- 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
- H01J9/022—Manufacture of electrodes or electrode systems of cold cathodes
- H01J9/025—Manufacture of electrodes or electrode systems of cold cathodes of field emission cathodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cold Cathode And The Manufacture (AREA)
- Solid Thermionic Cathode (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
921,016. Making cathodes. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 14, 1959 [July 17, 1958], No. 24164/59. Drawings to Specification. Class 83 (2). [Also in Group XL (a)] A cathode is made from a number of thin tungsten wires coated with a tungsten-bronze alloy by forming them into a bunch and fixing one end of the bunch into a holder by arc welding. The coating is then removed from the portions of the wires projecting outside the holder and the free ends of the wire are dipped into a bath of sodium nitrite which rises between the wires by capillary action; the etching process being accelerated by the local application of heat. The etching serves to produce a fine point on the end of each of the wires and these are then washed clean of the sodium nitrite.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL229696 | 1958-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB921016A true GB921016A (en) | 1963-03-13 |
Family
ID=19751284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2416459A Expired GB921016A (en) | 1958-07-17 | 1959-07-14 | Method of manufacturing field emission cathodes |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE1090337B (en) |
| ES (1) | ES250789A1 (en) |
| FR (1) | FR1230237A (en) |
| GB (1) | GB921016A (en) |
| NL (1) | NL108183C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7589473B2 (en) | 2007-08-06 | 2009-09-15 | Plasma Surgical Investments, Ltd. | Pulsed plasma device and method for generating pulsed plasma |
| US7928338B2 (en) | 2007-02-02 | 2011-04-19 | Plasma Surgical Investments Ltd. | Plasma spraying device and method |
| US8105325B2 (en) | 2005-07-08 | 2012-01-31 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device, use of a plasma-generating device and method of generating a plasma |
| US8109928B2 (en) | 2005-07-08 | 2012-02-07 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of plasma surgical device |
| US8735766B2 (en) | 2007-08-06 | 2014-05-27 | Plasma Surgical Investments Limited | Cathode assembly and method for pulsed plasma generation |
| US9913358B2 (en) | 2005-07-08 | 2018-03-06 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of a plasma surgical device |
| US10463418B2 (en) | 2010-07-22 | 2019-11-05 | Plasma Surgical Investments Limited | Volumetrically oscillating plasma flows |
| CN110777424A (en) * | 2019-11-14 | 2020-02-11 | 南京工业职业技术学院 | A kind of nano needle tip batch production device and preparation method |
| US11882643B2 (en) | 2020-08-28 | 2024-01-23 | Plasma Surgical, Inc. | Systems, methods, and devices for generating predominantly radially expanded plasma flow |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173006A (en) * | 1962-10-22 | 1965-03-09 | Field Emission Corp | Short pulse-high energy electron radiation tube |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE395823C (en) * | 1924-05-23 | Julius Edgar Lilienfeld Dr | Device for generating X-rays | |
| AT95299B (en) * | 1922-01-14 | 1923-12-10 | C H F Mueller Fa | Device for triggering cathode rays. |
| DE689830C (en) * | 1937-05-15 | 1940-04-04 | Siemens & Halske Akt Ges | Process for improving the emission properties of cold tip cathodes |
-
0
- NL NL108183D patent/NL108183C/xx active
-
1959
- 1959-07-14 ES ES0250789A patent/ES250789A1/en not_active Expired
- 1959-07-14 DE DEN16973A patent/DE1090337B/en active Pending
- 1959-07-14 GB GB2416459A patent/GB921016A/en not_active Expired
- 1959-07-16 FR FR800172A patent/FR1230237A/en not_active Expired
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9913358B2 (en) | 2005-07-08 | 2018-03-06 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of a plasma surgical device |
| US12075552B2 (en) | 2005-07-08 | 2024-08-27 | Plasma Surgical, Inc. | Plasma-generating device, plasma surgical device and use of a plasma surgical device |
| US10201067B2 (en) | 2005-07-08 | 2019-02-05 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of a plasma surgical device |
| US8109928B2 (en) | 2005-07-08 | 2012-02-07 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device and use of plasma surgical device |
| US8337494B2 (en) | 2005-07-08 | 2012-12-25 | Plasma Surgical Investments Limited | Plasma-generating device having a plasma chamber |
| US8465487B2 (en) | 2005-07-08 | 2013-06-18 | Plasma Surgical Investments Limited | Plasma-generating device having a throttling portion |
| US8105325B2 (en) | 2005-07-08 | 2012-01-31 | Plasma Surgical Investments Limited | Plasma-generating device, plasma surgical device, use of a plasma-generating device and method of generating a plasma |
| US7928338B2 (en) | 2007-02-02 | 2011-04-19 | Plasma Surgical Investments Ltd. | Plasma spraying device and method |
| US8030849B2 (en) | 2007-08-06 | 2011-10-04 | Plasma Surgical Investments Limited | Pulsed plasma device and method for generating pulsed plasma |
| US8735766B2 (en) | 2007-08-06 | 2014-05-27 | Plasma Surgical Investments Limited | Cathode assembly and method for pulsed plasma generation |
| US7589473B2 (en) | 2007-08-06 | 2009-09-15 | Plasma Surgical Investments, Ltd. | Pulsed plasma device and method for generating pulsed plasma |
| US10463418B2 (en) | 2010-07-22 | 2019-11-05 | Plasma Surgical Investments Limited | Volumetrically oscillating plasma flows |
| US10631911B2 (en) | 2010-07-22 | 2020-04-28 | Plasma Surgical Investments Limited | Volumetrically oscillating plasma flows |
| US12023081B2 (en) | 2010-07-22 | 2024-07-02 | Plasma Surgical, Inc. | Volumetrically oscillating plasma flows |
| US10492845B2 (en) | 2010-07-22 | 2019-12-03 | Plasma Surgical Investments Limited | Volumetrically oscillating plasma flows |
| CN110777424A (en) * | 2019-11-14 | 2020-02-11 | 南京工业职业技术学院 | A kind of nano needle tip batch production device and preparation method |
| CN110777424B (en) * | 2019-11-14 | 2023-07-18 | 南京工业职业技术学院 | A kind of nano needle tip mass production device and preparation method |
| US11882643B2 (en) | 2020-08-28 | 2024-01-23 | Plasma Surgical, Inc. | Systems, methods, and devices for generating predominantly radially expanded plasma flow |
| US12058801B2 (en) | 2020-08-28 | 2024-08-06 | Plasma Surgical, Inc. | Systems, methods, and devices for generating predominantly radially expanded plasma flow |
Also Published As
| Publication number | Publication date |
|---|---|
| NL108183C (en) | |
| DE1090337B (en) | 1960-10-06 |
| FR1230237A (en) | 1960-09-14 |
| ES250789A1 (en) | 1960-03-01 |
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