Photoflash lamp and method of making
US4229161A · kind A · utility
8Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1979 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | Jan 2, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21K5/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrically-activated photoflash lamp which includes a thin member (e.g. a mica disk) therein located between the lamp's combustible shreds and primer material. The disk prevents the shreds from contacting the primer material and any portions of the lamp's electrical conductors which have access to the interior of the envelope. A method of making the lamp is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.