Electrically energized fire and/or intrusion detection system including spring-biased switching means
US3950746A · kind A · utility
6Cited by
5References
6Claims
0Family size
Inventor
Key dates
| Filing date | Sep 17, 1970 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Sep 17, 1990 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electrically energized fire and/or intrusion detection system is provided which includes an elongated electrically energized heat sensing element, and which also includes a plurality of spring-biased switching devices mechanically coupled to the heat sensing element to respond to tension variations therein to provide predetermined control effects, such as initiating alarms and/or activating appropriate fire suppression devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.