GB420877A - Improvements in or relating to the filling of gas-filled electric incandescent lamps - Google Patents
Improvements in or relating to the filling of gas-filled electric incandescent lampsInfo
- Publication number
- GB420877A GB420877A GB18422/34A GB1842234A GB420877A GB 420877 A GB420877 A GB 420877A GB 18422/34 A GB18422/34 A GB 18422/34A GB 1842234 A GB1842234 A GB 1842234A GB 420877 A GB420877 A GB 420877A
- Authority
- GB
- United Kingdom
- Prior art keywords
- krypton
- xenon
- gases
- filling
- gas
- 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
- 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 Lamp (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
420,877. Separating gases by liquefaction and solidification. SOC. ANON. POUR LES APPLICATIONS DE L'ELECTRICITE ET DES GAZ RARES ETABLISSEMENTS CLAUDE-PAZ ET SILVA, 8, Rue Cognacq-Jay, Paris. June 21, 1934, No. 18422. Convention date, April 23. [Class 8 (ii)] [See also Group XI] In the process of filling electric incandescent lamp bulbs with krypton or xenon, either alone or in admixture, the gas or gases which remain in the filling tube or channel after the bulb has been sealed are extracted by means of a vacuum pump through a condenser immersed in liquid nitrogen, oxygen, or air, boiling under a pressure which is preferably equal to or lower than atmospheric. The krypton and xenon are thus deposited in the solid state, whereas more volatile gases which may be present as impurities are not condensed and are eliminated by the vacuum pump. To obtain an uninterrupted operation two condensers are employed alternately, one being immersed in the cold liquid while the other is heated to evaporate the solidified krypton and xenon, which are collected.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR785140T | 1934-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB420877A true GB420877A (en) | 1934-12-10 |
Family
ID=9217673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18422/34A Expired GB420877A (en) | 1934-04-23 | 1934-06-21 | Improvements in or relating to the filling of gas-filled electric incandescent lamps |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE647199C (en) |
| FR (1) | FR785140A (en) |
| GB (1) | GB420877A (en) |
| NL (1) | NL40547C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5789847A (en) * | 1994-09-09 | 1998-08-04 | Philips Electronics North America Corporation | High efficiency sealed beam reflector lamp with reflective surface of heat treated silver |
| WO2006100428A1 (en) * | 2005-03-24 | 2006-09-28 | The Boc Group Plc | Method and apparatus for evacuating a chamber prior to its filling with a noble gas |
-
0
- NL NL40547D patent/NL40547C/xx active
- DE DENDAT647199D patent/DE647199C/de active Active
-
1934
- 1934-04-23 FR FR785140D patent/FR785140A/en not_active Expired
- 1934-06-21 GB GB18422/34A patent/GB420877A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5789847A (en) * | 1994-09-09 | 1998-08-04 | Philips Electronics North America Corporation | High efficiency sealed beam reflector lamp with reflective surface of heat treated silver |
| WO2006100428A1 (en) * | 2005-03-24 | 2006-09-28 | The Boc Group Plc | Method and apparatus for evacuating a chamber prior to its filling with a noble gas |
Also Published As
| Publication number | Publication date |
|---|---|
| FR785140A (en) | 1935-08-02 |
| DE647199C (en) | |
| NL40547C (en) |
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