EP0122433A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Residential fire alarm system
Assignee: Nohmi Bosai Ltd
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Filing: 1984-03-08
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Granted: —
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Expires: 2004-03-08
Abstract
Abstract This invention relates to a fire alarm system in which sensitivities of detectors can be adjusted to the ambient conditions under which they are used, and which thus has a high sensitivity but less possibility of producing false alarm.
Inventors
- 👤 Shoichi C/O Nohmi Bosai Kogyo Co. Ltd. Kimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 05:35
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/10; G08B17/11
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
59 words
A residential fire alarm system which is installed in the ordinary house or apartment house and which is characterized in that a sensitivity setting circuit is provided in the fire detector or the contro panel to adjust the sensitivity of the detector to the highest possib. value at which the detector will not operate when a fire is used.
Claim 2
Dependent Claim
59 words
A residential fire alarm system which is installed in the ordinary house or apartment house and which is characterized in that a sensitivity setting circuit is provided in the fire detector or the contro panel to adjust the sensitivity of the detector to the highest possib. value at which the detector will not operate when a fire is used.
Claim 3
Dependent Claim
34 words
A residential fire alarm system as set forth in Claim 1 wherin the sensitivity setting circuit is provided with a timer to reset the fire detector to the fixed sensitivity in a predetermined time.
References Cited (Backward Citations)
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