GB840344A - Improvements in or relating to electric incandescent lamps for projection purposes - Google Patents

Improvements in or relating to electric incandescent lamps for projection purposes

Info

Publication number
GB840344A
GB840344A GB20690/57A GB2069057A GB840344A GB 840344 A GB840344 A GB 840344A GB 20690/57 A GB20690/57 A GB 20690/57A GB 2069057 A GB2069057 A GB 2069057A GB 840344 A GB840344 A GB 840344A
Authority
GB
United Kingdom
Prior art keywords
filament
bulb
axis
revolution
lamp
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
GB20690/57A
Other languages
English (en)
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB840344A publication Critical patent/GB840344A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/06—Attaching of incandescent bodies to mount
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting
    • H01K7/02—Lamps for purposes other than general lighting for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB20690/57A 1956-07-02 1957-07-01 Improvements in or relating to electric incandescent lamps for projection purposes Expired GB840344A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL355519X 1956-07-02

Publications (1)

Publication Number Publication Date
GB840344A true GB840344A (en) 1960-07-06

Family

ID=19785198

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20690/57A Expired GB840344A (en) 1956-07-02 1957-07-01 Improvements in or relating to electric incandescent lamps for projection purposes

Country Status (5)

Country Link
BE (1) BE558875A (enrdf_load_stackoverflow)
CH (1) CH355519A (enrdf_load_stackoverflow)
DE (1) DE1023525B (enrdf_load_stackoverflow)
FR (1) FR1187754A (enrdf_load_stackoverflow)
GB (1) GB840344A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103700572A (zh) * 2013-12-31 2014-04-02 詹云翔 一种灯泡封口机的灯丝校准装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103700572A (zh) * 2013-12-31 2014-04-02 詹云翔 一种灯泡封口机的灯丝校准装置
CN103700572B (zh) * 2013-12-31 2016-01-27 詹云翔 一种灯泡封口机的灯丝校准装置

Also Published As

Publication number Publication date
CH355519A (de) 1961-07-15
BE558875A (enrdf_load_stackoverflow)
DE1023525B (de) 1958-01-30
FR1187754A (fr) 1959-09-16

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