发明授权
- 专利标题: Fire resistant optical cable
- 专利标题(中): 防火光缆
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申请号: US13821770申请日: 2010-09-10
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公开(公告)号: US09151919B2公开(公告)日: 2015-10-06
- 发明人: Enrico Consonni , Luigi Caimi , Davide Ceschiat
- 申请人: Enrico Consonni , Luigi Caimi , Davide Ceschiat
- 申请人地址: IT Milan
- 专利权人: PRYSMIAN S.P.A.
- 当前专利权人: PRYSMIAN S.P.A.
- 当前专利权人地址: IT Milan
- 代理机构: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- 国际申请: PCT/IB2010/002289 WO 20100910
- 国际公布: WO2012/032370 WO 20120315
- 主分类号: G02B6/44
- IPC分类号: G02B6/44 ; H01B7/295
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.
公开/授权文献
- US20130170800A1 FIRE RESISTANT OPTICAL CABLE 公开/授权日:2013-07-04
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