Chimney fire detector
US4315256A · kind A · utility
4Cited by
7References
7Claims
0Family size
Inventor
Key dates
| Filing date | Jan 28, 1980 |
| Grant date | Feb 9, 1982 |
| Priority date | — |
| Expiry date | Jan 28, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A chimney fire detector has a pair of entwined conductors mounted at the outlet of the chimney. A sensing device can detect electrical contact between these conductors. An insulating spacer is mounted between these conductors for separating them. This spacer is formed of material which allows the conductors to pass through the material and touch in response to temperatures in excess of a predetermined magnitude. This predetermined magnitude corresponds to the temperature at the outlet of the chimney during a chimney fire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.