GB321271A - Improvements in or relating to electric lamps - Google Patents

Improvements in or relating to electric lamps

Info

Publication number
GB321271A
GB321271A GB2548428A GB2548428A GB321271A GB 321271 A GB321271 A GB 321271A GB 2548428 A GB2548428 A GB 2548428A GB 2548428 A GB2548428 A GB 2548428A GB 321271 A GB321271 A GB 321271A
Authority
GB
United Kingdom
Prior art keywords
filament
bulb
bulbs
normal
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
GB2548428A
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
Priority to GB2548428A priority Critical patent/GB321271A/en
Priority to BE362691D priority patent/BE362691A/xx
Priority to FR679746D priority patent/FR679746A/en
Publication of GB321271A publication Critical patent/GB321271A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/40—Leading-in conductors

Landscapes

  • Discharge Lamp (AREA)

Abstract

321,271. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Sept. 5, 1928. Leading-in wires; residual gases. - To diminish the risk of arcing in gas-filled bulbs, and to enable argon to be used as the filling, the filament leads are separated at the point of attachment to the filament bv a distance at least one and a half times that in normal lamps, and at the same time to maintain an even light distribution the envelope of the bulb is of a light-diffusing character. In the bulb shown the filament is laid practically straight instead of in a broken circle as in normal bulbs. A doubly spiralled filament may be used. The form of filament shown in Specification 19729/14 is referred to.
GB2548428A 1928-09-05 1928-09-05 Improvements in or relating to electric lamps Expired GB321271A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2548428A GB321271A (en) 1928-09-05 1928-09-05 Improvements in or relating to electric lamps
BE362691D BE362691A (en) 1928-09-05 1929-07-31
FR679746D FR679746A (en) 1928-09-05 1929-08-03 Incandescent electric lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2548428A GB321271A (en) 1928-09-05 1928-09-05 Improvements in or relating to electric lamps

Publications (1)

Publication Number Publication Date
GB321271A true GB321271A (en) 1929-11-07

Family

ID=10228443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2548428A Expired GB321271A (en) 1928-09-05 1928-09-05 Improvements in or relating to electric lamps

Country Status (3)

Country Link
BE (1) BE362691A (en)
FR (1) FR679746A (en)
GB (1) GB321271A (en)

Also Published As

Publication number Publication date
BE362691A (en) 1929-08-31
FR679746A (en) 1930-04-16

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