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GB1355316A - Combustion flash bulb - Google Patents

Combustion flash bulb

Info

Publication number
GB1355316A
GB1355316A GB772273A GB772273A GB1355316A GB 1355316 A GB1355316 A GB 1355316A GB 772273 A GB772273 A GB 772273A GB 772273 A GB772273 A GB 772273A GB 1355316 A GB1355316 A GB 1355316A
Authority
GB
United Kingdom
Prior art keywords
combustion
ignition
bulb
envelope
flash bulb
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
GB772273A
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 Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1355316A publication Critical patent/GB1355316A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
    • F21K5/02—Light sources using charges of combustible material, e.g. illuminating flash devices ignited in a non-disrupting container, e.g. photo-flash bulb

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

1355316 Combustion flash bulb PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Feb 1973 [19 Feb 1972] 7722/73 Heading G2L When making a combustion flash bulb not having an ignition wire in which an ignition device comprises two current conductors whose ends within the bulb envelope are joined by an ignition mass comprising a mixture of metal powder and a binder, the ignition mass is subjected to an electrical breakdown in a vacuum or an inert gas atmosphere prior to filling the envelope with a gas to maintain combustion. The ignition mass is preferably Zr, Al, Mg or Ti mixed with KClO 4 and nitorcellulose and is accommodated in a cavity in a glass body within the envelope, the glass body also embracing the two current conductors. The bulb may be filled with Zr or Hf foil and the combustion supporting gas may be O 2 , NF 3 , N 2 F 4 or OF 2 .
GB772273A 1972-02-19 1973-02-16 Combustion flash bulb Expired GB1355316A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7202213A NL7202213A (en) 1972-02-19 1972-02-19

Publications (1)

Publication Number Publication Date
GB1355316A true GB1355316A (en) 1974-06-05

Family

ID=19815408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB772273A Expired GB1355316A (en) 1972-02-19 1973-02-16 Combustion flash bulb

Country Status (9)

Country Link
US (1) US3823994A (en)
JP (1) JPS5522881B2 (en)
BE (1) BE795646A (en)
CA (1) CA963079A (en)
DE (1) DE2304607A1 (en)
FR (1) FR2172358B1 (en)
GB (1) GB1355316A (en)
IT (1) IT979199B (en)
NL (1) NL7202213A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884615A (en) * 1974-03-21 1975-05-20 Gen Electric Flash Lamp Mount Construction
US3972673A (en) * 1974-09-23 1976-08-03 General Electric Company Photoflash lamp
US3959860A (en) * 1974-12-20 1976-06-01 General Electric Company Method of making non-shorting photoflash lamp
US3969067A (en) * 1975-03-12 1976-07-13 General Electric Company Photoflash lamp
US4059388A (en) * 1975-11-05 1977-11-22 Gte Sylvania Incorporated Photoflash lamp
NL7602231A (en) * 1976-03-04 1977-09-06 Philips Nv COMBUSTION FLASHLIGHT.
US4278420A (en) * 1979-07-16 1981-07-14 Gte Products Corporation Photoflash lamp, method of making same, and photoflash circuit
US4449950A (en) * 1982-03-01 1984-05-22 Gte Products Corporation Method of making photoflash lamp to prevent shred migration into tip portion of lamp envelope during sealing thereof
US4659308A (en) * 1985-12-10 1987-04-21 Gte Products Corporation Photoflash lamp with improved primer
US4614494A (en) * 1985-12-10 1986-09-30 Gte Products Corporation Primer insulating base
US4696641A (en) * 1986-08-11 1987-09-29 Gte Products Corporation Primer material and photoflash lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL151491B (en) * 1966-09-30 1976-11-15 Philips Nv COMBUSTION FLASHLIGHT.
US3752636A (en) * 1970-11-27 1973-08-14 Philips Corp Photoflash lamp

Also Published As

Publication number Publication date
NL7202213A (en) 1973-08-21
JPS4890732A (en) 1973-11-27
US3823994A (en) 1974-07-16
FR2172358A1 (en) 1973-09-28
FR2172358B1 (en) 1976-09-10
DE2304607A1 (en) 1973-08-30
BE795646A (en) 1973-08-20
CA963079A (en) 1975-02-18
IT979199B (en) 1974-09-30
JPS5522881B2 (en) 1980-06-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee