GB1288206A - - Google Patents

Info

Publication number
GB1288206A
GB1288206A GB4620470A GB1288206DA GB1288206A GB 1288206 A GB1288206 A GB 1288206A GB 4620470 A GB4620470 A GB 4620470A GB 1288206D A GB1288206D A GB 1288206DA GB 1288206 A GB1288206 A GB 1288206A
Authority
GB
United Kingdom
Prior art keywords
filament
lamp
holders
envelope
coils
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
GB4620470A
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 filed Critical
Publication of GB1288206A publication Critical patent/GB1288206A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • H01K1/24—Mounts for lamps with connections at opposite ends, e.g. for tubular lamp

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1288206 Tubular lamps E F PRYTKOV 29 Sept 1970 46204/70 Heading H1F A tubular incandescent lamp comprises a single-spiral tungsten filament 4 supported by holders 5, 6 in a transparent glass envelope 1 wherein one of the holders 5 is supported and retained in a tube 11 welded to the envelope 1 of the lamp so that it will support the filament when the lamp is mounted with its longitudinal axis vertically. The holders 5, 6 are made of tungsten wire coils, some turns of these coils being of the same pitch and diameter as the filament coils and screwed on to the filament and other turns of these coils being of a much larger diameter to fit snugly against the inside surface of the lamp envelope. The holders 6 at the ends of the filament are welded to metal foil leads 3 sealed in the glass of the envelope and in contact with respective electrodes 7 in ceramic end caps 9. To allow the formation of a good electrical contact each electrode 7 is fused in a metal mass 8 within its end cap 9. The tube 11 may be welded integrally with the exhaust tube of the lamp.
GB4620470A 1970-09-29 1970-09-29 Expired GB1288206A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB4620470 1970-09-29
US7677370A 1970-09-30 1970-09-30
NL7014342A NL7014342A (en) 1970-09-29 1970-09-30
DE19702049001 DE2049001A1 (en) 1970-09-29 1970-10-06
FR7038764A FR2110705A5 (en) 1970-09-29 1970-10-27

Publications (1)

Publication Number Publication Date
GB1288206A true GB1288206A (en) 1972-09-06

Family

ID=27510126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4620470A Expired GB1288206A (en) 1970-09-29 1970-09-29

Country Status (5)

Country Link
US (1) US3675070A (en)
DE (1) DE2049001A1 (en)
FR (1) FR2110705A5 (en)
GB (1) GB1288206A (en)
NL (1) NL7014342A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7908214A (en) * 1979-11-09 1981-06-01 Philips Nv ELECTRIC LIGHT BULB.
GB8316306D0 (en) * 1983-06-15 1983-07-20 Thorn Emi Domestic Appliances Heating apparatus
US4839559A (en) * 1988-02-22 1989-06-13 General Electric Company Radiant energy incandescent lamp

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA827274A (en) * 1969-11-11 Sylvania Electric Products Projector lamp
GB946149A (en) * 1961-07-03 1964-01-08 Gen Electric Co Ltd Improvements in or relating to electric lamps
US3173051A (en) * 1962-04-19 1965-03-09 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Lamp filament support
GB948859A (en) * 1962-04-26 1964-02-05 Thorn Electrical Ind Ltd Improvements in and relating to incandescent lamps
US3335312A (en) * 1965-01-25 1967-08-08 Gen Electric Filament support for tubular incandescent lamps
US3390299A (en) * 1965-11-08 1968-06-25 Gen Electric Filament supports for tubular incandescent lamps
FR1527882A (en) * 1966-03-16 1968-06-07 Philips Nv Incandescent lamp
US3496402A (en) * 1968-02-09 1970-02-17 Westinghouse Electric Corp Tubular incandescent lamp having interlocked filament support member and envelope

Also Published As

Publication number Publication date
US3675070A (en) 1972-07-04
NL7014342A (en) 1972-04-05
FR2110705A5 (en) 1972-06-02
DE2049001A1 (en) 1972-04-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees