GB1339520A - Photoflash lamps - Google Patents

Photoflash lamps

Info

Publication number
GB1339520A
GB1339520A GB174372A GB174372A GB1339520A GB 1339520 A GB1339520 A GB 1339520A GB 174372 A GB174372 A GB 174372A GB 174372 A GB174372 A GB 174372A GB 1339520 A GB1339520 A GB 1339520A
Authority
GB
United Kingdom
Prior art keywords
bulb
flash
combustion
ignition
hafnium
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
GB174372A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1339520A publication Critical patent/GB1339520A/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
    • 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
    • F21K5/023—Ignition devices in photo flash bulbs
    • F21K5/026—Ignition devices in photo flash bulbs using mechanical firing, e.g. percussion of a fulminating charge

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
GB174372A 1971-02-05 1972-01-13 Photoflash lamps Expired GB1339520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11291371A 1971-02-05 1971-02-05

Publications (1)

Publication Number Publication Date
GB1339520A true GB1339520A (en) 1973-12-05

Family

ID=22346515

Family Applications (1)

Application Number Title Priority Date Filing Date
GB174372A Expired GB1339520A (en) 1971-02-05 1972-01-13 Photoflash lamps

Country Status (4)

Country Link
BE (1) BE778986A (enExample)
CA (1) CA960054A (enExample)
FR (1) FR2124462B1 (enExample)
GB (1) GB1339520A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1044909A (en) * 1974-09-25 1978-12-26 Donald E. Armstrong Photoflash lamp

Also Published As

Publication number Publication date
DE2204965A1 (de) 1972-08-10
FR2124462A1 (enExample) 1972-09-22
FR2124462B1 (enExample) 1975-10-24
DE2204965B2 (de) 1975-09-18
CA960054A (en) 1974-12-31
BE778986A (fr) 1972-08-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee