Photoflash lamp array with web hinge
US4032769A · kind A · utility
2Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1975 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Aug 21, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B15/0442
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multilamp photoflash array with lamp-reflector units in linear rows facing in opposite directions and nested back-to-back. The rows of reflectors for both sides of the array are vacuum-formed from a single sheet web between the reflector rows for providing a spring-hinged center support. Each reflector has a parabolic surface with an elongated cylindrical recess behind its associated tubular lamp whereby an air space is provided between the reflector and lamp which functions as a thermal insulator for minimizing heat distortion of adjacent reflectors upon flashing of the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.