Light scattering smoke detector
US4216377A · kind A · utility
14Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1978 |
| Grant date | Aug 5, 1980 |
| Priority date | — |
| Expiry date | Jun 22, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/113
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A smoke detector having a housing including openings for admission of smoke, a smoke detecting chamber within said housing with the wall of said chamber formed of spaced overlapping elements which form a serpentine path therebetween, means on one side of said chamber for emitting light into said chamber, a light detector adjoining and shielded from said light source and a conical reflector in said chamber and on a side opposite said light source and detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.