GB619568A - Improvements in and relating to glass-to-metal seals - Google Patents
Improvements in and relating to glass-to-metal sealsInfo
- Publication number
- GB619568A GB619568A GB36756/46A GB3675646A GB619568A GB 619568 A GB619568 A GB 619568A GB 36756/46 A GB36756/46 A GB 36756/46A GB 3675646 A GB3675646 A GB 3675646A GB 619568 A GB619568 A GB 619568A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- metal
- seals
- columbium
- envelope
- 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
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/02—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing by fusing glass directly to metal
-
- 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
- H01J19/02—Electron-emitting electrodes; Cathodes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
619,568. Glass-to-metal seals. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 12, 1946, No. 36756. Convention date, April 20, 1945. [Class 36] [Also in Group XL (a)] A sealed envelope, more particularly for an electronic device, includes a glass portion and a metal portion, consisting of columbium, which forms a glass-to-metal seal with the glass. The ends of an envelope 13, Fig. 2, are sealed as by pinch seals 19. The filament 17 is mounted on columbium metal conductors 21 which extend through the pinch seals 19 and form seals with the glass. Alternatively, the envelope 13, Fig. 3, may have a re-entrant portion 29 terminating in an annular rim 31. The electrode 15 comprises a thimble 33 of columbium having a skirt portion 35, the thin edge 37 of which forms an hermetic seal with the rim 31.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US619568XA | 1945-04-20 | 1945-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB619568A true GB619568A (en) | 1949-03-10 |
Family
ID=22039283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36756/46A Expired GB619568A (en) | 1945-04-20 | 1946-12-12 | Improvements in and relating to glass-to-metal seals |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR945455A (en) |
| GB (1) | GB619568A (en) |
-
1946
- 1946-12-12 GB GB36756/46A patent/GB619568A/en not_active Expired
-
1947
- 1947-02-27 FR FR945455D patent/FR945455A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR945455A (en) | 1949-05-05 |
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