Combined scattered-light and extinction-based fire detector
US7817049B2 · kind B2 · utility
13Cited by
9References
25Claims
0Family size
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Key dates
| Filing date | Nov 2, 2006 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Oct 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/113
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A fire detector has at least two sensor units for monitoring a confined space for the occurrence of a fire. A first fire parameter is monitored according to the scattered light method, using a first sensor unit located at or in the vicinity of the ceiling. At least one second sensor unit of the fire detector, which emits at least two highly focused light beams towards the floor of the confined space, monitors a second fire parameter according to the extinction method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.