GB1266256A - - Google Patents
Info
- Publication number
- GB1266256A GB1266256A GB1266256DA GB1266256A GB 1266256 A GB1266256 A GB 1266256A GB 1266256D A GB1266256D A GB 1266256DA GB 1266256 A GB1266256 A GB 1266256A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shreds
- bends
- bulbs
- envelope
- march
- 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)
- Treatment Of Fiber Materials (AREA)
Abstract
1,266,256. Flash-bulbs. PATENTTREUHAND-GES FUR ELEKTRISCHE GLUHLAMPEN m.b.H. March 17, 1970 [March 17, 1969], No.12837/70. Heading G2L. A flash-bulb comprises an envelope 1 containing crumpled shreds 4 of combustible metal foil, these shreds having a cross-section of from 2 X 10<SP>-4</SP> to 10 x 10<SP>-4</SP> mm<SP>2</SP>, having from 8 to 50 bends per 100 mm of strand length and forming a ball with a cross-section of from 40 to 8 mm<SP>2</SP> per 100 mm of shred length. The shreds are of zirconium and the bends in these shreds are smaller than 0À3 mm, the angles included by individual bends being less than 60 degrees. The envelope has a varnish coating 2 as a protection against shattering and the bulb is provided with conventional ignition means 5. Apparatus is described for bending the shreds and filling the bulbs Fig.4 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691913417 DE1913417C3 (en) | 1969-03-17 | Flash lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1266256A true GB1266256A (en) | 1972-03-08 |
Family
ID=5728360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1266256D Expired GB1266256A (en) | 1969-03-17 | 1970-03-17 |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US3630650A (en) |
| AT (1) | AT306508B (en) |
| BE (1) | BE747426A (en) |
| CH (1) | CH507474A (en) |
| FR (1) | FR2035002B1 (en) |
| GB (1) | GB1266256A (en) |
| NL (1) | NL7003086A (en) |
| SE (1) | SE349652B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3817683A (en) * | 1971-02-05 | 1974-06-18 | Gen Electric | Photoflash lamps |
| US3770362A (en) * | 1971-12-23 | 1973-11-06 | Gte Sylvania Inc | Moisture indicator for photoflash lamp |
| US3792957A (en) * | 1972-06-26 | 1974-02-19 | Gte Sylvania Inc | Photoflash lamp |
| US3822109A (en) * | 1972-11-21 | 1974-07-02 | Gte Sylvania Inc | Photoflash lamp |
| NL7311779A (en) * | 1973-08-28 | 1975-03-04 | Philips Nv | METHOD OF MANUFACTURING A FLASH LAMP. |
| US4421493A (en) * | 1982-03-01 | 1983-12-20 | Gte Products Corporation | Method of making photoflash lamp |
| 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 |
| US4445847A (en) * | 1982-05-26 | 1984-05-01 | Gte Products Corporation | Photoflash lamp |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2162847A (en) * | 1935-04-26 | 1939-06-20 | Philips Nv | Flash lamp |
| US2772703A (en) * | 1950-10-26 | 1956-12-04 | Sylvania Electric Prod | Method and apparatus for filling flashbulbs |
| US3045460A (en) * | 1960-04-27 | 1962-07-24 | Sylvania Electric Prod | Photoflash lamp |
| US3120694A (en) * | 1960-08-10 | 1964-02-11 | Gen Electric | Method and apparatus for loading flash lamps with filamentary combustible material |
| US3158014A (en) * | 1962-12-28 | 1964-11-24 | Sylvania Electric Prod | Photoflash lamp |
| US3228216A (en) * | 1963-05-29 | 1966-01-11 | Sylvania Electric Prod | Photoflash lamp |
-
1970
- 1970-02-05 AT AT105570A patent/AT306508B/en not_active IP Right Cessation
- 1970-02-23 SE SE02293/70A patent/SE349652B/xx unknown
- 1970-03-04 NL NL7003086A patent/NL7003086A/xx not_active Application Discontinuation
- 1970-03-06 CH CH333670A patent/CH507474A/en not_active IP Right Cessation
- 1970-03-12 US US18875A patent/US3630650A/en not_active Expired - Lifetime
- 1970-03-16 FR FR7009335A patent/FR2035002B1/fr not_active Expired
- 1970-03-16 BE BE747426D patent/BE747426A/en unknown
- 1970-03-17 GB GB1266256D patent/GB1266256A/en not_active Expired
-
1971
- 1971-10-13 US US00189037A patent/US3739441A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| SE349652B (en) | 1972-10-02 |
| DE1913417A1 (en) | 1970-10-01 |
| FR2035002A1 (en) | 1970-12-18 |
| FR2035002B1 (en) | 1974-05-31 |
| US3739441A (en) | 1973-06-19 |
| BE747426A (en) | 1970-08-31 |
| AT306508B (en) | 1973-04-10 |
| CH507474A (en) | 1971-05-15 |
| DE1913417B2 (en) | 1977-06-23 |
| US3630650A (en) | 1971-12-28 |
| NL7003086A (en) | 1970-09-21 |
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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 |