Security screen system
US5049855A · kind A · utility
40Cited by
15References
18Claims
0Family size
Inventors
Key dates
| Filing date | Oct 24, 1989 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Oct 24, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/126
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A security screen assembly comprises a screen of mesh material with an optical path formed from at least one optical fiber integrally interwoven with the screen material in a generally serpentine path. A light source or transmitter is coupled to the first end of the optical path while a suitable light detector is coupled to detect light emitted from the second end of the optical path. An interface unit connects the screen to a remote alarm control unit for activating an alarm if the detected light signal falls below a predetermined intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.