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GB1296332A - - Google Patents

Info

Publication number
GB1296332A
GB1296332A GB1296332DA GB1296332A GB 1296332 A GB1296332 A GB 1296332A GB 1296332D A GB1296332D A GB 1296332DA GB 1296332 A GB1296332 A GB 1296332A
Authority
GB
United Kingdom
Prior art keywords
combustible material
hollow
hollow body
july
ignition
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
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
Priority claimed from DE19702034328 external-priority patent/DE2034328C3/en
Priority claimed from DE19702039425 external-priority patent/DE2039425C3/en
Application filed filed Critical
Publication of GB1296332A publication Critical patent/GB1296332A/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
    • 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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

1296332 Flash-bulbs PATENT-TREUHANDGES FUR ELEKTRISCHE GLœHLAMPEN mbH 8 July 1971 [10 July 1970 7 Aug 1970] 32189/71 Heading G2L A mechanically ignitable photo-flash lamp contains combustible material in the form of a hollow body 2 of fabric adjacent the inner surface of its transparent envelope 1, this body having an opening facing the end of an ignition tube 3 containing percussive material 5, so that the pressure wave on ignition does not displace the combustible material. The combustible material may be crumpled zirconium and the hollow body may be in the form of a hollow cylinder, a hollow cone, or a hollow body whose inner cavity has a parabolic, hyperbolic or elliptical configuration in vertical section.
GB1296332D 1970-07-10 1971-07-08 Expired GB1296332A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702034328 DE2034328C3 (en) 1970-07-10 Flashlight
DE19702039425 DE2039425C3 (en) 1970-08-07 1970-08-07 Flashlight

Publications (1)

Publication Number Publication Date
GB1296332A true GB1296332A (en) 1972-11-15

Family

ID=25759418

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296332D Expired GB1296332A (en) 1970-07-10 1971-07-08

Country Status (2)

Country Link
FR (1) FR2100481A5 (en)
GB (1) GB1296332A (en)

Also Published As

Publication number Publication date
FR2100481A5 (en) 1972-03-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees