GB961974A - Improvements in or relating to electric lamps - Google Patents
Improvements in or relating to electric lampsInfo
- Publication number
- GB961974A GB961974A GB32289/60A GB3228960A GB961974A GB 961974 A GB961974 A GB 961974A GB 32289/60 A GB32289/60 A GB 32289/60A GB 3228960 A GB3228960 A GB 3228960A GB 961974 A GB961974 A GB 961974A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- core
- microns thick
- outer layer
- foil
- 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
- 229910052751 metal Inorganic materials 0.000 abstract 5
- 239000002184 metal Substances 0.000 abstract 5
- 239000011888 foil Substances 0.000 abstract 3
- 239000000956 alloy Substances 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000010453 quartz Substances 0.000 abstract 2
- 239000003870 refractory metal Substances 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
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
- C03C27/046—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 metals, metal oxides or metal salts 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
-
- 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
- H01J5/38—Pinched-stem or analogous seals
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)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
<PICT:0961974/C1/1> An electric lamp has at least one strip-shaped conducting foil 3 of refractory metal sealed into quartz or a similar material and having a thickness greater in the middle than at the edges. For protection against oxidation the foil includes a core 31 of refractory metal, e.g. molybdenum, an intermediate layer 32 of core metal alloyed with another metal, the core metal content of the alloy decreasing outwardly and an outer layer 33 including the other metal, e.g. chromium, and/or its oxide and possibly a little core metal. The core is from 15 to 70 microns thick at the centre, the alloy layer is 1 to 8 microns thick and the outer layer is 0.5 to 4 microns thick. The melting point of the outer layer is lower than the sealing temperature of the quartz. The edges of the foil carry marginal extensions 34 whose widths give an indication of the quality of the seal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL243694A NL106429C (en) | 1959-09-23 | 1959-09-23 | Method for manufacturing an electric lamp, as well as an electric lamp manufactured according to this method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB961974A true GB961974A (en) | 1964-06-24 |
Family
ID=19751949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32289/60A Expired GB961974A (en) | 1959-09-23 | 1960-09-20 | Improvements in or relating to electric lamps |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3105867A (en) |
| CH (1) | CH388452A (en) |
| DE (1) | DE1179297B (en) |
| ES (1) | ES261130A1 (en) |
| FR (1) | FR1270857A (en) |
| GB (1) | GB961974A (en) |
| NL (1) | NL106429C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2449968A1 (en) * | 1979-02-26 | 1980-09-19 | Philips Nv | HIGH PRESSURE MERCURY VAPOR DISCHARGE LAMP |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3420944A (en) * | 1966-09-02 | 1969-01-07 | Gen Electric | Lead-in conductor for electrical devices |
| NL6918746A (en) * | 1969-12-13 | 1971-06-15 | ||
| US3621111A (en) * | 1970-07-01 | 1971-11-16 | Gen Electric | Lead-in conductor for electrical devices |
| US4587454A (en) * | 1984-05-17 | 1986-05-06 | Gte Products Corporation | Incandescent lamp with improved press seal |
| CN1005176B (en) * | 1985-04-09 | 1989-09-13 | 菲利普白炽灯有限公司 | Electric lamp |
| US5021711A (en) * | 1990-10-29 | 1991-06-04 | Gte Products Corporation | Quartz lamp envelope with molybdenum foil having oxidation-resistant surface formed by ion implantation |
| US5430353A (en) * | 1993-07-22 | 1995-07-04 | General Electric Company | Lamp inlead assembly having a formed foil arrangement |
| DE10200005A1 (en) * | 2002-01-02 | 2003-07-17 | Philips Intellectual Property | Process for the production of a foil from molybdenum and titanium oxide (TiO2) for insertion into a glass bulb |
| AU2003228080A1 (en) * | 2002-06-07 | 2003-12-22 | Koninklijke Philips Electronics N.V. | Electric lamp with oxidation-resistant lead-in conductors |
| DE10245922A1 (en) * | 2002-10-02 | 2004-04-15 | Philips Intellectual Property & Standards Gmbh | High-pressure gas discharge lamp |
| US7863818B2 (en) * | 2007-08-01 | 2011-01-04 | General Electric Company | Coil/foil-electrode assembly to sustain high operating temperature and reduce shaling |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE646242C (en) * | 1935-05-11 | 1937-06-11 | Quarzlampen Gmbh | Ribbon-shaped current introduction in electrical discharge tubes |
| GB477462A (en) * | 1936-06-30 | 1937-12-30 | Gen Electric Co Ltd | Improvements in or relating to metallic electric conductors sealed through quartz |
| US2304297A (en) * | 1939-05-12 | 1942-12-08 | Amperex Electronic Products In | Art of utilizing molybdenum |
| US2876377A (en) * | 1955-09-01 | 1959-03-03 | Westinghouse Electric Corp | Ribbon seal and method of fabrication |
| US2966607A (en) * | 1959-05-26 | 1960-12-27 | Duro Test Corp | High pressure short arc lamps and method of making same |
-
1959
- 1959-09-23 NL NL243694A patent/NL106429C/en active
-
1960
- 1960-09-08 US US54742A patent/US3105867A/en not_active Expired - Lifetime
- 1960-09-20 ES ES0261130A patent/ES261130A1/en not_active Expired
- 1960-09-20 CH CH1062960A patent/CH388452A/en unknown
- 1960-09-20 GB GB32289/60A patent/GB961974A/en not_active Expired
- 1960-09-20 DE DEN18940A patent/DE1179297B/en active Pending
- 1960-09-21 FR FR839164A patent/FR1270857A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2449968A1 (en) * | 1979-02-26 | 1980-09-19 | Philips Nv | HIGH PRESSURE MERCURY VAPOR DISCHARGE LAMP |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1179297B (en) | 1964-10-08 |
| FR1270857A (en) | 1961-09-01 |
| US3105867A (en) | 1963-10-01 |
| NL106429C (en) | 1963-11-15 |
| ES261130A1 (en) | 1960-11-16 |
| NL243694A (en) | 1963-02-15 |
| CH388452A (en) | 1965-02-28 |
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