Chamberless smoke detector
US10580277B2 · kind B2 · utility
0Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2018 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Sep 6, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/532
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The detector has a first optical smoke detector having a first smoke detector light source arranged for emitting a first beam of light and a first scattered light sensor positioned to detect light from the first beam which is scattered by smoke present within a detection zone; a second optical smoke detector having a second smoke detector light source arranged for emitting a second beam of light and a second scattered light sensor positioned to detect light from the second beam which is scattered by smoke present within the detection zone; and an object proximity detector to detect an object in the detection zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.