GB494447A - Improvements in methods of introducing electric conductors into hermetically sealed envelopes of which a substantial part is quartz - Google Patents
Improvements in methods of introducing electric conductors into hermetically sealed envelopes of which a substantial part is quartzInfo
- Publication number
- GB494447A GB494447A GB2519237A GB2519237A GB494447A GB 494447 A GB494447 A GB 494447A GB 2519237 A GB2519237 A GB 2519237A GB 2519237 A GB2519237 A GB 2519237A GB 494447 A GB494447 A GB 494447A
- Authority
- GB
- United Kingdom
- Prior art keywords
- quartz
- per cent
- strip
- methods
- hermetically sealed
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/04—Joining glass to metal by means of an interlayer
- C03C27/042—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts
- C03C27/044—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts of glass, glass-ceramic or ceramic material only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/32—Seals for leading-in conductors
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Joining Of Glass To Other Materials (AREA)
- Insulating Bodies (AREA)
Abstract
494,447. Uniting metal to quartz ; glass manufacture. GENERAL ELECTRIC CO., Ltd., FRANCIS, V. J., and PIRANI, M. Sept. 16, 1937, No. 25192. [Class 36] [Also in Group XXIII] A strip of metal more than 0À02 mm. thick is sealed through vitreous material having a thermal expansion somewhat greater than that of quartz by collapsing the walls of a tube of said material on to the strip and the vitreous material is then sealed to the quartz part of a sealed envelope. A strip of molybdenum 0À03-0À035 mm. thick or a strip of tungsten may be used and the vitreous material may comprise 90À5 per cent of silica, 7À5 per cent of alumina, 1 per cent of calcium oxide and 1 per cent of barium oxide or 94À5 per cent of silica and 5À5 per cent of alumina.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2519237A GB494447A (en) | 1937-09-16 | 1937-09-16 | Improvements in methods of introducing electric conductors into hermetically sealed envelopes of which a substantial part is quartz |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2519237A GB494447A (en) | 1937-09-16 | 1937-09-16 | Improvements in methods of introducing electric conductors into hermetically sealed envelopes of which a substantial part is quartz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB494447A true GB494447A (en) | 1938-10-26 |
Family
ID=10223714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2519237A Expired GB494447A (en) | 1937-09-16 | 1937-09-16 | Improvements in methods of introducing electric conductors into hermetically sealed envelopes of which a substantial part is quartz |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB494447A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1598845A2 (en) * | 2004-05-19 | 2005-11-23 | Heraeus Noblelight Ltd. | Quartz glass lamp and method for forming a quartz glass lamp |
-
1937
- 1937-09-16 GB GB2519237A patent/GB494447A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1598845A2 (en) * | 2004-05-19 | 2005-11-23 | Heraeus Noblelight Ltd. | Quartz glass lamp and method for forming a quartz glass lamp |
| EP1598845A3 (en) * | 2004-05-19 | 2006-03-01 | Heraeus Noblelight Ltd. | Quartz glass lamp and method for forming a quartz glass lamp |
| US7892060B2 (en) | 2004-05-19 | 2011-02-22 | Heraeus Noblelight Ltd. | Quartz glass lamp and method for forming a quartz glass lamp |
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