Intumescent structure for ducting carrying communications cabling
US8051614B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2005 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Nov 10, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/475
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An intumescent structure provides a hermetic-type barrier within a fiber duct through which communications cabling is extended. The structure is formed of a fire-resistant body possessing a plurality of pre-perforated forms that extend through the body. Each of the pre-perforated forms may be sized to have cross-sectional dimensions and geometries that generally correspond to the cross-sectional configurations of communications cabling that are typically placed in a fiber duct to interconnect electronic equipment. Selective removal of the pre-perforated forms establish associated passageways through the body for receiving the appropriately sized cabling therethrough. This facilitates the maintenance of a barrier to gasses and other substances escaping through the duct, while still allowing cabling to freely pass through the duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.