Fire and overheat detection
US4896141A · kind A · utility
5Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1988 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Apr 15, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An overheat detector comprises an optical fiber connected at one end to a light source and at the other end to a photodiode for monitoring the light level transmitted through the fiber. When the light level falls below a predetermined threshold due to melting of the fiber, an alarm signal is output. The temperature at which the alarm signal is output depends upon the material of which the light conducting part of the fibre is constructed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.