GB1340778A - Filament assejbly for incandescent lamps - Google Patents
Filament assejbly for incandescent lampsInfo
- Publication number
- GB1340778A GB1340778A GB1340778DA GB1340778A GB 1340778 A GB1340778 A GB 1340778A GB 1340778D A GB1340778D A GB 1340778DA GB 1340778 A GB1340778 A GB 1340778A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- filament
- incandescent lamps
- dec
- assejbly
- 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/16—Electric connection thereto
Landscapes
- Resistance Heating (AREA)
Abstract
1340778 Electric incandescent lamps THORN ELECTRICAL INDUSTRIES Ltd 1 Dec 1972 [2 Dec 1971] 56063/71 Heading H1F A lead-in conductor comprises a strip 20 of refractory metal such as tungsten or molybdenum having a screw threaded formation 23 at one end by means of which it can be screwed into an end of a coiled filament. The other end of the strip may be welded to a molybdenum foil which is embedded in the pinch seal of a quartz or silica envelope, or the strip itself may extend completely through the seal. The pitch or radius of the formation 23 may increase progressively away from the end of the strip to ensure a tight fit in the filament coil.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5606371 | 1971-12-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1340778A true GB1340778A (en) | 1974-01-30 |
Family
ID=10475624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1340778D Expired GB1340778A (en) | 1971-12-02 | 1971-12-02 | Filament assejbly for incandescent lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1340778A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4959585A (en) * | 1988-09-06 | 1990-09-25 | General Electric Company | Electric incandescent lamp and method of manufacture therefor |
EP0434373A2 (en) * | 1989-12-21 | 1991-06-26 | TUNGSRAM Részvénytársaság | Inside current conductor for halogen-filled incandescent lamps especially lamps manufactured with curved tube enclosure and halogen-filled incandescent lamp made with the inside current conductor |
EP0475508A2 (en) * | 1990-09-07 | 1992-03-18 | Koninklijke Philips Electronics N.V. | Electric incandescent lamp |
EP0944112A2 (en) * | 1998-03-20 | 1999-09-22 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Halogen incandescent lamp |
EP1102310A1 (en) * | 1999-11-19 | 2001-05-23 | General Electric Company | Filament assembly for an incandescent lamp comprising screw-in end plugs and method of manufature thereof |
-
1971
- 1971-12-02 GB GB1340778D patent/GB1340778A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4959585A (en) * | 1988-09-06 | 1990-09-25 | General Electric Company | Electric incandescent lamp and method of manufacture therefor |
EP0434373A2 (en) * | 1989-12-21 | 1991-06-26 | TUNGSRAM Részvénytársaság | Inside current conductor for halogen-filled incandescent lamps especially lamps manufactured with curved tube enclosure and halogen-filled incandescent lamp made with the inside current conductor |
EP0434373A3 (en) * | 1989-12-21 | 1991-11-06 | Tungsram Reszvenytarsasag | Inside current conductor for halogen-filled incandescent lamps especially lamps manufactured with curved tube enclosure and halogen-filled incandescent lamp made with the inside current conductor |
EP0475508A2 (en) * | 1990-09-07 | 1992-03-18 | Koninklijke Philips Electronics N.V. | Electric incandescent lamp |
US5140217A (en) * | 1990-09-07 | 1992-08-18 | North American Philips Corporation | Electric lamp having a push-in filament insert for filament mounting |
EP0475508A3 (en) * | 1990-09-07 | 1992-09-23 | N.V. Philips' Gloeilampenfabrieken | Electric incandescent lamp |
EP0944112A2 (en) * | 1998-03-20 | 1999-09-22 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Halogen incandescent lamp |
EP0944112A3 (en) * | 1998-03-20 | 1999-09-29 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Halogen incandescent lamp |
EP1102310A1 (en) * | 1999-11-19 | 2001-05-23 | General Electric Company | Filament assembly for an incandescent lamp comprising screw-in end plugs and method of manufature thereof |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |