| 发明名称 | Fire resistant optical cable | ||
| 摘要 | A fire resistant optical cable includes: a plurality of optical fibers; at least one tubular layer of a ceramifiable material surrounding the plurality of optical fibers; and at least one flame shielding layer surrounding the tubular layer. The tubular layer of the ceramifiable material is able to mechanically protect the optical fibers not only during heating but also when the fire is extinguished, since it forms a sufficiently robust layer to withstand the mechanical stresses caused by the collapsing of the materials still surrounding the cable, especially in the transition portions between hot and cold zones. The tubular layer of the ceramifiable material is protected by means of at least one flame shielding layer which prevents the flames from directly acting on the ceramifiable material. | ||
| 申请公布号 | US9151919(B2) | 申请公布日期 | 2015.10.06 |
| 申请号 | US201013821770 | 申请日期 | 2010.09.10 |
| 申请人 | PRYSMIAN S.P.A. | 发明人 | Consonni Enrico;Caimi Luigi;Ceschiat Davide |
| 分类号 | G02B6/44;H01B7/295 | 主分类号 | G02B6/44 |
| 代理机构 | Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. | 代理人 | Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. |
| 主权项 | 1. A fire resistant optical cable comprising: a plurality of optical fibers, wherein the plurality of optical fibers is arranged in micromodules; at least one tubular layer of a ceramifiable material surrounding the plurality of optical fibers; and at least one flame shielding layer surrounding the tubular layer,wherein the ceramifiable material comprises: at least one polymeric material; at least one glass frit; and at least one inert inorganic filler. | ||
| 地址 | Milan IT | ||