GB1217289A - Combustible flash bulbs - Google Patents
Combustible flash bulbsInfo
- Publication number
- GB1217289A GB1217289A GB4696469A GB4696469A GB1217289A GB 1217289 A GB1217289 A GB 1217289A GB 4696469 A GB4696469 A GB 4696469A GB 4696469 A GB4696469 A GB 4696469A GB 1217289 A GB1217289 A GB 1217289A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mass
- conductors
- tubular body
- sept
- 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
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)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Resistance Heating (AREA)
Abstract
1,217,289. Flash-bulb. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept.24, 1969 [Sept.27, 1968], No.46964/69. Heading G2L. A flash-bulb of the combustible type has an envelope of transparent material which includes an oxidizable metal, an oxidizing gas, an electrically ignitable mass, current conductors connected to the mass and a tubular body surrounding the conductors. In one embodiment, a filament 7 is provided with an ignitable mass 8 and tubular body 9 surrounds the conductors 3 and 4. The tubular body 9 prevents the metal wire filling 2 from shortcircuiting the conductors and also prevents the burning mass 8 from touching the walls of the envelope 1 during combustion. In another embodiment Fig. 2 (not shown) the mass 8 is coated directly on to a bead 6 and the filament 7 is omitted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6813920A NL6813920A (en) | 1968-09-27 | 1968-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1217289A true GB1217289A (en) | 1970-12-31 |
Family
ID=19804779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4696469A Expired GB1217289A (en) | 1968-09-27 | 1969-09-24 | Combustible flash bulbs |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE739404A (en) |
ES (1) | ES371883A1 (en) |
FR (1) | FR2019051A1 (en) |
GB (1) | GB1217289A (en) |
NL (1) | NL6813920A (en) |
-
1968
- 1968-09-27 NL NL6813920A patent/NL6813920A/xx unknown
-
1969
- 1969-09-24 GB GB4696469A patent/GB1217289A/en not_active Expired
- 1969-09-25 BE BE739404D patent/BE739404A/xx unknown
- 1969-09-25 ES ES371883A patent/ES371883A1/en not_active Expired
- 1969-09-26 FR FR6932900A patent/FR2019051A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
ES371883A1 (en) | 1971-11-16 |
BE739404A (en) | 1970-03-25 |
FR2019051A1 (en) | 1970-06-26 |
NL6813920A (en) | 1970-04-01 |
DE1947021B2 (en) | 1976-05-20 |
DE1947021A1 (en) | 1970-04-02 |
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