Fire alarm with distinct alarm reset threshold
US7091855B2 · kind B2 · utility
6Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2003 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Jul 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/26
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A hazard alarm includes: a detector for detecting a hazard parameter; trigger logic; and reset logic. The trigger logic triggers an alarm state when the measured parameter reaches a predetermined trigger threshold. The alarm state is maintained until a reset is successfully performed. The reset logic, upon a reset command, resets the alarm state if the measured parameter is below a predetermined reset threshold, and inhibits resetting of the alarm state if the measured parameter is above the predetermined reset threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.