GB518016A - Improvements in or relating to gasfilled electric incandescent lamps - Google Patents

Improvements in or relating to gasfilled electric incandescent lamps

Info

Publication number
GB518016A
GB518016A GB17567/38A GB1756738A GB518016A GB 518016 A GB518016 A GB 518016A GB 17567/38 A GB17567/38 A GB 17567/38A GB 1756738 A GB1756738 A GB 1756738A GB 518016 A GB518016 A GB 518016A
Authority
GB
United Kingdom
Prior art keywords
filament
bulb
incandescent lamps
electric incandescent
relating
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
GB17567/38A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB518016A publication Critical patent/GB518016A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/34—Double wall vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/58—Cooling arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Landscapes

  • Resistance Heating (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Discharge Lamp (AREA)

Abstract

518,016. Electric incandescent lamps. NAAMLOOZE VENNOOTSCHAP . PHILIPS' GLOEILAMPENFABRIEKEN. June 13, 1938, No. 17567. Convention date, June 12, 1937. Drawings to Specification. [Class 39 (ii)] A gas-filled lamp having an operating pressure exceeding 1 atmosphere and a bulb containing a filament of highly concentrated form, such as a coiled coil, has an internal diameter opposite the filament of not more than 15 mm. and of at least two-thirds the dimension of the filament in the longitudinal direction of the bulb and the filament is arranged in the immediate neighbourhood of one of the ends of the bulb. Blackening occurs where luminous radiation is not obstructed. Lamps for 12 and 230 volts and fittings at 15 atmospheres (cold) are described. Specification 515,704, is referred to.
GB17567/38A 1937-06-12 1938-06-13 Improvements in or relating to gasfilled electric incandescent lamps Expired GB518016A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL206539X 1937-06-12

Publications (1)

Publication Number Publication Date
GB518016A true GB518016A (en) 1940-02-15

Family

ID=19778583

Family Applications (2)

Application Number Title Priority Date Filing Date
GB17180/38A Expired GB515704A (en) 1937-06-12 1938-06-09 Improvements in gasfilled electric incandescent lamps
GB17567/38A Expired GB518016A (en) 1937-06-12 1938-06-13 Improvements in or relating to gasfilled electric incandescent lamps

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB17180/38A Expired GB515704A (en) 1937-06-12 1938-06-09 Improvements in gasfilled electric incandescent lamps

Country Status (5)

Country Link
BE (2) BE428543A (en)
CH (1) CH206539A (en)
DE (2) DE725341C (en)
FR (2) FR839199A (en)
GB (2) GB515704A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1112785B (en) * 1955-07-08 1961-08-17 Sylvania Electric Prod High frequency heated incandescent lamp
BR8400807A (en) * 1983-02-25 1984-10-02 Gte Prod Corp ELECTRIC HALOGEN / TUNGSTEN LAMP WITH PERMEATABLE ELEMENT CLOSING THE EXTERNAL HOUSING
RU2485395C1 (en) * 2012-02-22 2013-06-20 Юлия Алексеевна Щепочкина Led lamp bulb

Also Published As

Publication number Publication date
BE428543A (en)
FR839199A (en) 1939-03-28
DE725341C (en) 1942-09-19
GB515704A (en) 1939-12-12
BE428542A (en)
CH206539A (en) 1939-08-15
FR839200A (en) 1939-03-28
DE699404C (en) 1940-11-28

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