Hardware and methods for secure alarmed armored protective distribution systems and management
US9046669B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2013 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Oct 1, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/44
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fiber optic network has alarmed fiber optic lines in the cables connecting a secured junction box to plural user lock boxes. An outgoing alarm line and return alarm line in each cable connect the junction box to each user box. The outgoing alarm line is looped to the return alarm line inside the user lock box. The return alarm line is looped to the outgoing alarm line of a different cable inside the junction box to interconnect a plurality of alarm lines passing through a plurality of user boxes. A detector detects an alarm signal in the connected alarm lines to trigger an intrusion alarm. Power to the components in the box is disconnected when the box is opened and ventilation openings to the box are closed when the box is closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.