Fire and explosion detection apparatus
US4199682A · kind A · utility
9Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1978 |
| Grant date | Apr 22, 1980 |
| Priority date | — |
| Expiry date | May 3, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/12
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Fire and explosion detection apparatus comprises an ultra violet detector providing a first output signal in response to receipt of ultra violet radiation and an infra red detector providing a second output signal in response to receipt of infra red radiation. A logical AND circuit, in response to simultaneously occurring first and second output signals, provides a third output signal indicative of simultaneous receipt of ultra violet and infra red radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.