Adverse condition detection and notification apparatus
US6348871B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1999 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Sep 13, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/145
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention provides an adverse condition detection apparatus that enables a user to test the apparatus in close proximity without having to endure fully operational alarm noise. In one embodiment, the apparatus includes a detector, a transducer, and a test system. The detector provides an adverse condition signal in response to detecting an adverse condition (e.g., smoke). The transducer is operably connected to the detector for receiving the adverse condition signal. The transducer generates an operational alarm in response to receiving the adverse condition signal when the detector detects the adverse condition. The test system is operably connected to the transducer and causes it to generate a test alarm in response to a user activating the test system. However, the test alarm, at least initially, is lower in audibility than the operational alarm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.