GB1340778A - Filament assejbly for incandescent lamps - Google Patents

Filament assejbly for incandescent lamps

Info

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
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thorn Electrical Industries Ltd
Original Assignee
Thorn Electrical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Publication of GB1340778A publication Critical patent/GB1340778A/en
Expired legal-status Critical Current

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.
GB1340778D 1971-12-02 1971-12-02 Filament assejbly for incandescent lamps Expired GB1340778A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (9)

* Cited by examiner, † Cited by third party
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