GB1273654A - A grid wire or grid for use in an electron tube - Google Patents
A grid wire or grid for use in an electron tubeInfo
- Publication number
- GB1273654A GB1273654A GB3274670A GB3274670A GB1273654A GB 1273654 A GB1273654 A GB 1273654A GB 3274670 A GB3274670 A GB 3274670A GB 3274670 A GB3274670 A GB 3274670A GB 1273654 A GB1273654 A GB 1273654A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- grid
- electron tube
- microinches
- electroplating
- 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
- 238000009713 electroplating Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000007772 electrode material Substances 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/28—Non-electron-emitting electrodes; Screens
- H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0012—Constructional arrangements
- H01J2893/0019—Chemical composition and manufacture
Landscapes
- Solid Thermionic Cathode (AREA)
- Cold Cathode And The Manufacture (AREA)
Abstract
1,273,654. Electrode materials. ENGELHARD MINERALS & CHEMICALS CORP. 6 July, 1970 [7 July, 1969], No. 32746/70. Heading H1D. [Also in Division C7] A grid wire comprises a W, Mo and/or Ta or alloy thereof wire coated with 5 to 20 microinches Au then with Os. The wire is made by electroplating a flash coating of Au 5-20 microinches thick on to the wire, heating the wire to 800-1000‹ C. in H 2 , electroplating a layer of Os 10-150 microinches thick and heating in vacuum at 600-1200‹ C. The wire may be first formed into a grid and then coated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US83969169A | 1969-07-07 | 1969-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1273654A true GB1273654A (en) | 1972-05-10 |
Family
ID=25280408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3274670A Expired GB1273654A (en) | 1969-07-07 | 1970-07-06 | A grid wire or grid for use in an electron tube |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2033394A1 (en) |
| FR (1) | FR2054118A5 (en) |
| GB (1) | GB1273654A (en) |
-
1970
- 1970-07-03 FR FR7024738A patent/FR2054118A5/fr not_active Expired
- 1970-07-06 DE DE19702033394 patent/DE2033394A1/en active Pending
- 1970-07-06 GB GB3274670A patent/GB1273654A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2054118A5 (en) | 1971-04-16 |
| DE2033394A1 (en) | 1971-01-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |