GB645150A - Improved method of introducing barium into a sealed vessel - Google Patents
Improved method of introducing barium into a sealed vesselInfo
- Publication number
- GB645150A GB645150A GB35178/47A GB3517847A GB645150A GB 645150 A GB645150 A GB 645150A GB 35178/47 A GB35178/47 A GB 35178/47A GB 3517847 A GB3517847 A GB 3517847A GB 645150 A GB645150 A GB 645150A
- Authority
- GB
- United Kingdom
- Prior art keywords
- barium
- improved method
- thorium
- sealed vessel
- mixture
- 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
- 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
- H01J7/183—Composition or manufacture of getters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
- H01J9/395—Filling vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
645,150. Obtaining high vacua. PHILIPS ELECTRICAL, Ltd. Dec. 31, 1947, No. 35178. Convention date, May 27, 1939. [Class 8(i)] [Also in Group XL(a)] For liberating barium in a closed space as in gettering " discharge tubes or incandescant lamps, there is employed a mixture of barium peroxide and metallic zirconium, hafnium, titanium or thorium, with oxide of cerium, lanthanum or thorium as, a diluent, the last ingredient being preferably not more-than 50 per cent of the whole. The metal should be in sufficient quantity to fix all the oxygen of the peroxide, and an example is given. The mixture may be compressed into pastilles The subject-matter is identical with that of Specification 546,048.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL645150X | 1939-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB645150A true GB645150A (en) | 1950-10-25 |
Family
ID=19791904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35178/47A Expired GB645150A (en) | 1939-05-27 | 1947-12-31 | Improved method of introducing barium into a sealed vessel |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR868299A (en) |
| GB (1) | GB645150A (en) |
| NL (1) | NL52142C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2601974A (en) * | 1939-12-09 | 1952-07-01 | Separator Ab | Plate heat exchanger |
-
0
- NL NL52142D patent/NL52142C/xx active
-
1940
- 1940-12-21 FR FR868299D patent/FR868299A/en not_active Expired
-
1947
- 1947-12-31 GB GB35178/47A patent/GB645150A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR868299A (en) | 1941-12-26 |
| NL52142C (en) |
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