GB807390A - Improvements in or relating to electric discharge tubes - Google Patents
Improvements in or relating to electric discharge tubesInfo
- Publication number
- GB807390A GB807390A GB881257A GB881257A GB807390A GB 807390 A GB807390 A GB 807390A GB 881257 A GB881257 A GB 881257A GB 881257 A GB881257 A GB 881257A GB 807390 A GB807390 A GB 807390A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- ceramic
- philips
- seal
- separated
- 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
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
- H01J19/50—Spacing members extending to the envelope
-
- 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
- H01J2893/0002—Construction arrangements of electrode systems
- H01J2893/0005—Fixing of electrodes
- H01J2893/0008—Supply leads; Electrode supports via rigid connection to vessel
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
807,390. Discharge tubes. PHILIPS ELETRICAL INDUSTRIES Ltd. (Philips Gloeillampenfabreiken N. V.) March 18, 1957 No. 8812/57. Class 39(1). In a discharge tube having at least two electrodes carried by disc-like supply conductors, the conductors being of or coated with titanium or zirconium and being spaced apart by a cylindrical insulator which is also part of the tube wall, the abutting disc-to-insulator surfaces are sealed together over a part of their area only. In Fig. 1 the anode-carrying disc 8, the grid-disc 7 and the cathode-disc 6 are separated by ceramic envelope parts 10, 9, 11. Between the adjoining surfaces is placed silver foil of less width than the ceramic parts, so that after the seal is formed the sealed portion, as shown at 13, extends only part of the way across, disc and ceramic being in direct abutting contact over the remaining part. An alternative construction is shown in Fig. 4, the electrode support disc 15 being separated from an outer ring 16 of the same material by a copper or silver sealing ring 19. In this case the seal is made in the centre of the ceramic parts 9, 11 instead of at one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB881257A GB807390A (en) | 1957-03-18 | 1957-03-18 | Improvements in or relating to electric discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB881257A GB807390A (en) | 1957-03-18 | 1957-03-18 | Improvements in or relating to electric discharge tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB807390A true GB807390A (en) | 1959-01-14 |
Family
ID=9859699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB881257A Expired GB807390A (en) | 1957-03-18 | 1957-03-18 | Improvements in or relating to electric discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB807390A (en) |
-
1957
- 1957-03-18 GB GB881257A patent/GB807390A/en not_active Expired
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