GB443767A - Improvements in and relating to thermionic discharge devices - Google Patents
Improvements in and relating to thermionic discharge devicesInfo
- Publication number
- GB443767A GB443767A GB25677/35A GB2567735A GB443767A GB 443767 A GB443767 A GB 443767A GB 25677/35 A GB25677/35 A GB 25677/35A GB 2567735 A GB2567735 A GB 2567735A GB 443767 A GB443767 A GB 443767A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- getter
- metal
- shield
- sept
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/186—Getter supports
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Gas-Filled Discharge Tubes (AREA)
Abstract
443,767. Thermionic valves. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 16, 1935, No. 25677. Convention date, Sept. 15, 1934. [Class 39 (i)] The metal envelope of a valve has a pocket or dent in which the getter is located. In one form Fig. 2, a cylindrical metal envelope 1 has a circular dent 18 in which a magnesium getter pellet is retained by a welded - on shield 19. The electrode leads are taken out through a metal member 3 closing the envelope at seals 17, and a metal shield 20 which extends up to the lower of two mica spacers fitting in the envelope 1 protects them from the getter. The shield 20 is secured to the member 3 and is connected to the cathode so that the whole container is at cathode potential. In a modification, Fig. 3, the getter is retained in an annular groove 22 in the envelope. A metal plate 30, with openings 31, fits tightly about the supports of a suppressor grid. The grid posts 23, 24, 25 are spaced by a mica disc 26 fitting in the inner portion 27 of the envelope.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US744166A US2067817A (en) | 1934-09-15 | 1934-09-15 | Device for gettering metal tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB443767A true GB443767A (en) | 1936-03-05 |
Family
ID=21935005
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25461/35A Expired GB449127A (en) | 1934-09-15 | 1935-09-13 | Improvements in and relating to thermionic devices |
| GB25677/35A Expired GB443767A (en) | 1934-09-15 | 1935-09-16 | Improvements in and relating to thermionic discharge devices |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25461/35A Expired GB449127A (en) | 1934-09-15 | 1935-09-13 | Improvements in and relating to thermionic devices |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2067817A (en) |
| BE (1) | BE411183A (en) |
| DE (1) | DE739183C (en) |
| FR (1) | FR46595E (en) |
| GB (2) | GB449127A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422427A (en) * | 1944-01-21 | 1947-06-17 | Gen Electric | Electronic discharge device |
| US2429954A (en) * | 1944-02-02 | 1947-10-28 | Hytron Corp | Insulation in an electron tube |
| US2437097A (en) * | 1945-01-05 | 1948-03-02 | King Lab Inc | Getter structure |
| NL65818C (en) * | 1946-10-11 | |||
| US2755403A (en) * | 1952-10-22 | 1956-07-17 | Gen Electric | Magnetic motion transducer |
| BE527340A (en) * | 1953-04-24 | |||
| US2887602A (en) * | 1956-06-19 | 1959-05-19 | Gen Electric | Ultra-high frequency electric discharge device |
| FI69215C (en) * | 1983-09-30 | 1985-12-10 | Outokumpu Oy | SAET FOER ACTIVATION AV ENNANFOER EN GASFYLLD PROPORTIONALRAEKNARE ANORDNAD STABILISATOR FOER GASFAS |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1323836A (en) * | 1916-10-06 | 1919-12-02 | Gen Electric | Method of removing gases and apparatus produced thereby. |
| GB251572A (en) * | 1924-12-31 | 1926-04-30 | Ernest Yeoman Robinson | Improvements in or relating to vacuum electric tube devices |
| NL27026C (en) * | 1926-07-19 | |||
| GB300403A (en) * | 1927-10-14 | 1928-11-15 | Philips Nv | Improvements relating to thermionic valves or electron discharge tubes |
| FR646813A (en) * | 1928-01-07 | 1928-11-16 | Adaptation of magnesium in high emission lamps | |
| DE551178C (en) * | 1929-05-29 | 1932-05-30 | C H F Mueller Akt Ges | Process for creating a high vacuum in x-ray tubes |
| NL41681C (en) * | 1931-10-22 |
-
1934
- 1934-09-15 US US744166A patent/US2067817A/en not_active Expired - Lifetime
-
1935
- 1935-09-07 BE BE411183D patent/BE411183A/xx unknown
- 1935-09-09 FR FR46595D patent/FR46595E/en not_active Expired
- 1935-09-09 DE DEA77011D patent/DE739183C/en not_active Expired
- 1935-09-13 GB GB25461/35A patent/GB449127A/en not_active Expired
- 1935-09-16 GB GB25677/35A patent/GB443767A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2067817A (en) | 1937-01-12 |
| BE411183A (en) | 1935-10-31 |
| DE739183C (en) | 1943-09-14 |
| GB449127A (en) | 1936-06-22 |
| FR46595E (en) | 1936-07-10 |
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