GB1148978A - Gas free electrodes for vacuum devices and method of preparation thereof - Google Patents
Gas free electrodes for vacuum devices and method of preparation thereofInfo
- Publication number
- GB1148978A GB1148978A GB19922/67A GB1992267A GB1148978A GB 1148978 A GB1148978 A GB 1148978A GB 19922/67 A GB19922/67 A GB 19922/67A GB 1992267 A GB1992267 A GB 1992267A GB 1148978 A GB1148978 A GB 1148978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- oxygen
- stainless steel
- preparation
- fixed
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
-
- 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
- H01J9/385—Exhausting vessels
Abstract
1,148,978. Spark gaps; vacuum switches. GENERAL ELECTRIC CO. 1 May, 1967 [1 July, 1966], No. 19922/67. Headings H1D and H1N. [Also in Division C7] In a vacuum gap device evacuated to a pressure of 10<SP>-4</SP> mm. Hg or less, evolution of oxygen from the primary arc electrodes, at least portions of which comprise as a major constituent a non-refractory electrically conductive material of high vapour pressure, e.g. Cu, is prevented by incorporating in the electrodes a minor constituent having a high affinity for oxygen, and forming therewith a high-temperature stable oxide, e.g. Be or a rare earth, to form an alloy with the Cu. The device may have one fixed and one movable electrode (Fig. 1, not shown) or may have two fixed electrodes, one of which incorporates a trigger assembly (Fig. 2, not shown). The envelope may comprise a cylinder of glass, alumina or forsterite ceramic with end caps of stainless steel, nickel or titanium supporting the electrodes which are surrounded by a metal, e.g. stainless steel, shield.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US562141A US3497755A (en) | 1966-07-01 | 1966-07-01 | Vacuum devices with electrode members containing oxygen - reactive minor constitutent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1148978A true GB1148978A (en) | 1969-04-16 |
Family
ID=24244973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19922/67A Expired GB1148978A (en) | 1966-07-01 | 1967-05-01 | Gas free electrodes for vacuum devices and method of preparation thereof |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3497755A (en) |
| JP (1) | JPS5416029B1 (en) |
| DE (1) | DE1640234B2 (en) |
| FR (1) | FR1530086A (en) |
| GB (1) | GB1148978A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2279966A (en) * | 1993-07-17 | 1995-01-18 | Special Melted Products Limite | Improving alloy compositions |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3624325A (en) * | 1969-12-29 | 1971-11-30 | Helen W Horn | Vacuum-type circuit interrupter with weld-resistant contact material consisting essentially of copper and beryllium |
| US3783212A (en) * | 1971-07-28 | 1974-01-01 | Ite Imperial Corp | Contacts for use in vacuum switch arrangements |
| US3887778A (en) * | 1972-11-10 | 1975-06-03 | Gen Electric | Vacuum arc device with improved arc-resistant electrodes |
| US4028514A (en) * | 1974-12-03 | 1977-06-07 | General Electric Company | High current vacuum circuit interrupter with beryllium contact |
| US4978893A (en) * | 1988-09-27 | 1990-12-18 | The United States Of American As Epresented By The United States The Department Of Energy | Laser-triggered vacuum switch |
| JP4818530B2 (en) † | 2001-04-19 | 2011-11-16 | 三菱電機株式会社 | Vacuum valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL244627A (en) * | 1958-07-24 | |||
| GB1020914A (en) * | 1961-11-10 | 1966-02-23 | Gen Electric | Improvements in vacuum circuit interrupter |
| DE1251406B (en) * | 1962-01-24 |
-
1966
- 1966-07-01 US US562141A patent/US3497755A/en not_active Expired - Lifetime
-
1967
- 1967-05-01 GB GB19922/67A patent/GB1148978A/en not_active Expired
- 1967-06-28 DE DE1967G0050505 patent/DE1640234B2/en active Granted
- 1967-06-29 JP JP4191567A patent/JPS5416029B1/ja active Pending
- 1967-06-30 FR FR112737A patent/FR1530086A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2279966A (en) * | 1993-07-17 | 1995-01-18 | Special Melted Products Limite | Improving alloy compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1530086A (en) | 1968-06-21 |
| US3497755A (en) | 1970-02-24 |
| JPS5416029B1 (en) | 1979-06-19 |
| DE1640234A1 (en) | 1970-08-13 |
| DE1640234B2 (en) | 1977-05-18 |
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