Communicative environmental alarm system with voice indication
US6323780A · kind A · utility
Inventor
Key dates
| Filing date | Oct 12, 1999 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Oct 12, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/009
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The battery powered or 120 VAC powered environmental condition detector of the present invention is designed to provide an early warning of the presence of an environmental condition (smoke or carbon monoxide gas or natural gas or propane gas or any multiple combination of these offending agents) to persons in remote areas of a building. The detector sensing the environmental condition emits an audible tonal pattern alarm, while transmitting a radio signal directly to other environmental condition detectors to activate their alarms and to activate an electronically stored human voice recording (or synthesized voice) that indicates the location of the environmental condition detector sensing the environmental condition, or the type of environmental condition, or both. Rechargeable light modules separate from the detector are included that receive the signal from the detector sensing the environmental condition and illuminate areas and paths of egress for the duration of the alarm condition or in case of 120 VAC power failure. All components of the system are easy to install due to the modular design and conventional power sources. An intermittent activation of the electronic circuit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.