GB420575A - Improvements in electric gasfilled incandescent lamps - Google Patents

Improvements in electric gasfilled incandescent lamps

Info

Publication number
GB420575A
GB420575A GB15664/34A GB1566434A GB420575A GB 420575 A GB420575 A GB 420575A GB 15664/34 A GB15664/34 A GB 15664/34A GB 1566434 A GB1566434 A GB 1566434A GB 420575 A GB420575 A GB 420575A
Authority
GB
United Kingdom
Prior art keywords
nitrogen
incandescent lamps
electric
gasfilled
cms
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
GB15664/34A
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 GB420575A publication Critical patent/GB420575A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/50—Selection of substances for gas fillings; Specified pressure thereof

Landscapes

  • Discharge Lamp (AREA)

Abstract

420,575. Electric incandescent lamps with residual gases. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. May 25, 1934, No. 15664. Convention date, July 10, 1933. Drawings to Specification. [Class 39 (ii)] A gas-filled lamp has a filling of krypton or xenon with the addition of at least 10 per cent and not more than 30 per cent of nitrogen. The pressure is preferably between 25 cms. and 45 cms. of mercury. Curves show the relation of the pressure of the filling and the percentage of nitrogen to the breakdown voltage, an argon-nitrogen mixture being compared with krypton-nitrogen.
GB15664/34A 1933-07-10 1934-05-25 Improvements in electric gasfilled incandescent lamps Expired GB420575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE420575X 1933-07-10

Publications (1)

Publication Number Publication Date
GB420575A true GB420575A (en) 1934-12-04

Family

ID=6452526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15664/34A Expired GB420575A (en) 1933-07-10 1934-05-25 Improvements in electric gasfilled incandescent lamps

Country Status (2)

Country Link
FR (1) FR775464A (en)
GB (1) GB420575A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493170A (en) * 1994-09-09 1996-02-20 Philips Electronics North America Corporation High efficiency sealed beam reflector lamp
US5789847A (en) * 1994-09-09 1998-08-04 Philips Electronics North America Corporation High efficiency sealed beam reflector lamp with reflective surface of heat treated silver

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3605134A1 (en) * 1986-03-04 1987-08-20 Vni Pk I T I Istocnikov Sveta COMPOSITION FOR FILLING BULBS
JP3230003B2 (en) * 1991-03-08 2001-11-19 林原 健 Lighting equipment
TW203145B (en) * 1991-04-09 1993-04-01 Hayashibara Ken
JP2934923B2 (en) * 1991-12-06 1999-08-16 林原 健 Lighting equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493170A (en) * 1994-09-09 1996-02-20 Philips Electronics North America Corporation High efficiency sealed beam reflector lamp
US5789847A (en) * 1994-09-09 1998-08-04 Philips Electronics North America Corporation High efficiency sealed beam reflector lamp with reflective surface of heat treated silver

Also Published As

Publication number Publication date
FR775464A (en) 1934-12-28

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