GB1162525A - Improvements in or relating to Electrodes for Electric Discharge Devices. - Google Patents
Improvements in or relating to Electrodes for Electric Discharge Devices.Info
- Publication number
- GB1162525A GB1162525A GB5058366A GB5058366A GB1162525A GB 1162525 A GB1162525 A GB 1162525A GB 5058366 A GB5058366 A GB 5058366A GB 5058366 A GB5058366 A GB 5058366A GB 1162525 A GB1162525 A GB 1162525A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thorium
- metallic
- support
- thorium oxide
- electrode
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
- B63C11/30—Ballast
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0735—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode
- H01J61/0737—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Discharge Lamp (AREA)
Abstract
1,162,525. Electrode materials and processing. CLAUDE PAZ ET VISSEAUX. 11 Nov., 1966 [17 Nov., 1965], No. 50583/66. Heading H1D. An electrode comprises, adhering to a support, a sintered electron emissive layer consisting of a mixture of metallic thorium and thorium oxide together with, if desired, a minor proportion of one or more additional inorganic substances, exclusive of alkali or alkaline earth metals either in the metallic state or in the form of compounds, in which the weight ratio of metallic thorium to thorium oxide is in the range 1: 3 to 3: 1. The emissive layer may also contain small amounts of silica and/or tungsten. The electrode may be manufactured by dipping the support, which may be of tungsten containing small amounts of thorium and/or thorium oxide, into a suspension in a binder of the required proportions of thorium and thorium oxide, drying the coating and sintering by passing an arc between the coated support and another conductor in a rare gas atmosphere. Two such electrodes may be incorporated in a high-pressure mercury vapour discharge lamp, Fig. 2 (not shown), in which, in addition to mercury, the filling includes one or more of the iodides of the metals thallium, sodium, indium, gallium, lithium and the rare earths. In an example specific dimensions and operating data of the lamp are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR38772A FR1464066A (en) | 1965-11-17 | 1965-11-17 | electrode for electric discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1162525A true GB1162525A (en) | 1969-08-27 |
Family
ID=8592713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5058366A Expired GB1162525A (en) | 1965-11-17 | 1966-11-11 | Improvements in or relating to Electrodes for Electric Discharge Devices. |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE689742A (en) |
| CH (1) | CH451327A (en) |
| FR (1) | FR1464066A (en) |
| GB (1) | GB1162525A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5041041A (en) * | 1986-12-22 | 1991-08-20 | Gte Products Corporation | Method of fabricating a composite lamp filament |
| CA1305512C (en) * | 1986-12-22 | 1992-07-21 | Thomas J. Patrician | Method of fabricating a composite lamp member |
-
1965
- 1965-11-17 FR FR38772A patent/FR1464066A/en not_active Expired
-
1966
- 1966-11-11 GB GB5058366A patent/GB1162525A/en not_active Expired
- 1966-11-16 BE BE689742D patent/BE689742A/xx unknown
- 1966-11-16 CH CH1642866A patent/CH451327A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE689742A (en) | 1967-05-16 |
| DE1539521A1 (en) | 1969-09-18 |
| FR1464066A (en) | 1966-07-22 |
| CH451327A (en) | 1968-05-15 |
| DE1539521B2 (en) | 1975-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE | Patent expired |