GB676679A - Improvements in and relating to electrode seals - Google Patents
Improvements in and relating to electrode sealsInfo
- Publication number
- GB676679A GB676679A GB30896/50A GB3089650A GB676679A GB 676679 A GB676679 A GB 676679A GB 30896/50 A GB30896/50 A GB 30896/50A GB 3089650 A GB3089650 A GB 3089650A GB 676679 A GB676679 A GB 676679A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bush
- bead
- ceramic
- casing
- glass
- 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
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/32—Seals for leading-in conductors
- H01J5/40—End-disc seals, e.g. flat header
- H01J5/42—End-disc seals, e.g. flat header using intermediate part
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0034—Lamp bases
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
676,679. Ceramic-metal seals. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 19, 1950 [Dec. 31, 1949], No. 30896/50. Class 36. A lead-in conductor 3 is passed through a ceramic bush 4 having a glass bead 9 sealed around a substantially central portion thereof by fusion, the glass having a smaller coefficient of expansion than the ceramic, a metal sleeve 5 being positioned around the bush 4 so that one end thereof is embedded in the bead 9, the other end being hermetically sealed to the conductor 3. The bead 9 may be sealed directly to the glass envelope of an electronic discharge device, or a second metal sleeve 8 surrounding the bush 4 may have one end embedded in the bead 9, the other end being welded to the rim of an aperture in a metal casing 2. The end of the bush within the casing 2 may be provided with a counterbore 10 to increase the length of the leakage path from the casing to the leadconductor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US676679XA | 1949-12-31 | 1949-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB676679A true GB676679A (en) | 1952-07-30 |
Family
ID=22077560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30896/50A Expired GB676679A (en) | 1949-12-31 | 1950-12-19 | Improvements in and relating to electrode seals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB676679A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1017238B (en) * | 1954-05-24 | 1957-10-10 | Siemens Ag | Electrical implementation with a solid, cast glass body as an insulating part |
| DE1032354B (en) * | 1953-11-25 | 1958-06-19 | Hydrawerk Ag | Electrode feed-through |
-
1950
- 1950-12-19 GB GB30896/50A patent/GB676679A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1032354B (en) * | 1953-11-25 | 1958-06-19 | Hydrawerk Ag | Electrode feed-through |
| DE1017238B (en) * | 1954-05-24 | 1957-10-10 | Siemens Ag | Electrical implementation with a solid, cast glass body as an insulating part |
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