Optical waveguides – Optical transmission cable
Patent
1996-12-10
1998-03-10
Palmer, Phan T. H.
Optical waveguides
Optical transmission cable
385112, 385113, 174 70A, G02B 644
Patent
active
057271062
ABSTRACT:
An installation 10 comprising a line 12 extending between and suspended from a plurality of spaced apart aerial suspension locations 14 defines a passage for an optical fiber unit. The line comprises a plurality of elongate tensile resistant tubes 18 connected end-to-end by respective connectors 20. The line is secured to each suspension location by respective securing means 22 which are secured to said line at two spaced apart locations 28, 30 thereon such that the portion 26 of said line between these locations is untensioned and includes a connector 20. The securing means 22 is adapted to allow tensioning of the portion 26 of said line when the tensile load on the line adjacent thereto on either side of said suspension location reaches a first predetermined amount, and the connector 20 is adapted to cause the end-to-end connection of the tensile resistant tubes 18 connected thereby to break when the tensile load on said portion reaches a second predetermined amount. The first and second predetermined amounts are less than the tensile load for breaking the tensile resistant tubes and said second amount is no greater than said first amount.
REFERENCES:
patent: 5092663 (1992-03-01), Hivner
patent: 5448670 (1995-09-01), Blew et al.
Jones Malcolm Owen
Sutehall Ralph
Palmer Phan T. H.
Pirelli General plc
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