GB737300A - Improvements in electric discharge tubes - Google Patents
Improvements in electric discharge tubesInfo
- Publication number
- GB737300A GB737300A GB20771/53A GB2077153A GB737300A GB 737300 A GB737300 A GB 737300A GB 20771/53 A GB20771/53 A GB 20771/53A GB 2077153 A GB2077153 A GB 2077153A GB 737300 A GB737300 A GB 737300A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mica
- arcs
- per cent
- envelope
- july
- 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
- H01J19/52—Spacing members extending to the envelope without fixed connection between spacing member and 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
- H01J2893/0009—Electrode system pressing against vessel wall
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
737,300. Thermionic valves. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 27, 1953 [July 30, 1952], No. 20771/53. Class 39(1). An electrode system is supported from the envelope by means of a mica spacer whose edges consist of arcs which make obtuse internal angles at each intersection. Mica disc 5 has its edges formed by four arcs of radius Rc, preferably 20-30 per cent greater than Rb, the internal radius of that part of the envelope with which the mica engages. The diameter of the mica from corner to corner is at least 0.5 per cent greater than 2 Rb and the tolerance of Rb is less than 0.33 per cent. Elongated micas may be obtained by varying Rc for two arcs located opposite each other. Each electrode may alternatively have a separate mica support.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL737300X | 1952-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB737300A true GB737300A (en) | 1955-09-21 |
Family
ID=19820425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20771/53A Expired GB737300A (en) | 1952-07-30 | 1953-07-27 | Improvements in electric discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB737300A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801178A (en) * | 1970-04-07 | 1974-04-02 | Philips Corp | Method of providing support for conductors of an electric filament or discharge lamp |
-
1953
- 1953-07-27 GB GB20771/53A patent/GB737300A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801178A (en) * | 1970-04-07 | 1974-04-02 | Philips Corp | Method of providing support for conductors of an electric filament or discharge lamp |
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