Photographic flash device using light-emitting pyrotechnic charges
US4347053A · kind A · utility
10Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1980 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | May 5, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21K5/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A photographic flash device which includes several pyrotechnic charges for emitting light upon electrical ignition thereof. Each charge is centrally suspended within an individual chamber located within the device's light-transmitting, plastic housing. The charges may be arranged in annular or linear arrays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.