GB961640A - Incandescent lamp - Google Patents
Incandescent lampInfo
- Publication number
- GB961640A GB961640A GB46795/62A GB4679562A GB961640A GB 961640 A GB961640 A GB 961640A GB 46795/62 A GB46795/62 A GB 46795/62A GB 4679562 A GB4679562 A GB 4679562A GB 961640 A GB961640 A GB 961640A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- graphite
- hydrocarbon
- heating
- tantalum
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 6
- 229910002804 graphite Inorganic materials 0.000 abstract 4
- 239000010439 graphite Substances 0.000 abstract 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 229930195733 hydrocarbon Natural products 0.000 abstract 2
- 150000002430 hydrocarbons Chemical class 0.000 abstract 2
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 abstract 2
- 229910003468 tantalcarbide Inorganic materials 0.000 abstract 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H01K3/02—Manufacture of incandescent bodies
Abstract
A tantalum carbide filament is prepared by packing a coil of tantalum wire with powdered graphite to maintain the shape and heating to an extent sufficient to carburize the coil. The heating may be carried out in an inert atmosphere or one containing hydrogen and a hydrocarbon. In making a lamp mount having a tantalum carbide filament, a coiled coil of tantalum wire is dipped in a colloidal suspension of carbon, a mandrel of steel or tungsten is inserted in the turns of the major coil and the coil then rolled in powdered graphite, dried, covered with graphite powder in a graphite boat and heated in an electric furnace in an atmosphere of argon or hydrocarbon. Surplus graphite is then removed by blowing a stream of air containing particles of fine abrasive on to the coil. Alternatively, the coil is immersed in water and subjected to supersonic vibration. Specification 944,827 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US159100A US3287591A (en) | 1961-12-13 | 1961-12-13 | Tantalum carbide incandescent lamp and method of manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB961640A true GB961640A (en) | 1964-06-24 |
Family
ID=22571087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB46795/62A Expired GB961640A (en) | 1961-12-13 | 1962-12-11 | Incandescent lamp |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3287591A (en) |
| BE (1) | BE625922A (en) |
| DE (1) | DE1248799B (en) |
| GB (1) | GB961640A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4032809A (en) * | 1966-03-21 | 1977-06-28 | Westinghouse Electric Corporation | Tantalum carbide or tantalum-alloy carbide filament mounting and method |
| JPS464029Y1 (en) * | 1968-05-28 | 1971-02-12 | ||
| US3548244A (en) * | 1968-07-01 | 1970-12-15 | British Lighting Ind Ltd | Lamp having twin filaments and integral filament legs mounted in a bridge |
| US3792224A (en) * | 1971-07-19 | 1974-02-12 | Westinghouse Electric Corp | Method for making non-tangling beaded filament coils |
| BE788518A (en) * | 1971-09-09 | 1973-03-07 | Philips Nv | ELECTRICAL INCANDESCENCE LAMP |
| GB2192751B (en) * | 1986-07-14 | 1991-02-13 | Denki Kagaku Kogyo Kk | Method of making a thermionic cathode structure. |
| US5148080A (en) * | 1990-01-16 | 1992-09-15 | Hilux Development | Incandescent lamp filament incorporating hafnium |
| JP3762437B2 (en) * | 1995-10-20 | 2006-04-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Electric light |
| DE102005057084A1 (en) * | 2005-11-30 | 2007-05-31 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Incandescent filament with melting point exceeding that of tungsten, used in quartz halogen bulb, contains metal carbide in which carbon content is sub-stoichiometric |
| KR20100053506A (en) * | 2007-06-20 | 2010-05-20 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | Tantalum carbide filament lamp and process for the production thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US479360A (en) * | 1892-07-19 | Henry green | ||
| US2175345A (en) * | 1935-07-12 | 1939-10-10 | Gen Electric | Electric gaseous discharge device |
| US2542656A (en) * | 1941-01-31 | 1951-02-20 | Hartford Nat Bank & Trust Co | Indirectly heated cathode |
| BE476887A (en) * | 1942-08-10 | |||
| US2434478A (en) * | 1943-12-22 | 1948-01-13 | Westinghouse Electric Corp | Incandescent electric lamp and method |
| US2716714A (en) * | 1951-08-20 | 1955-08-30 | Westinghouse Electric Corp | Incandescent electric lamp |
| US2961568A (en) * | 1957-11-14 | 1960-11-22 | Gen Electric | Filament joint for incandescent lamps |
| US3022438A (en) * | 1959-09-10 | 1962-02-20 | Polaroid Corp | Electric lamps |
-
0
- BE BE625922D patent/BE625922A/xx unknown
- DE DENDAT1248799D patent/DE1248799B/de active Pending
-
1961
- 1961-12-13 US US159100A patent/US3287591A/en not_active Expired - Lifetime
-
1962
- 1962-12-11 GB GB46795/62A patent/GB961640A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3287591A (en) | 1966-11-22 |
| DE1248799B (en) | |
| BE625922A (en) |
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