False alarm resistant fire detector with improved performance
US5798700A · kind A · utility
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22References
7Claims
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Key dates
| Filing date | Nov 5, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Nov 5, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A fire detector having a greatly reduced frequency of generating false alarms. An AND gate is responsive to outputs from first and second fire detector modules that are responsive to the detection of first and second characteristics of a fire, respectively, to signal the detection of a fire if both of these characteristics have been detected. At least one override path is included to enable the occurrence of a particular type of fire to be signaled that would not otherwise be signaled by the output of said AND gate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.