G - Physics – 02 – B
Patent
G - Physics
02
B
88/97.1
G02B 6/44 (2006.01) H04B 10/12 (2006.01)
Patent
CA 2018763
ABSTRACT In an overhead optical transmission system in which an optical cable is freely supported between towers employed to support overhead electric power transmission lines and in which each end of the suspended length of optical cable is secured to a tower by means of a metal termination fitting which surrounds and is clamped on a part of a length of the optical cable at or near this end, each metal termination fitting of the cable over a part of the length of the fitting extending to the end of the fitting remote from the tower and an immediately adjacent part of the length of the optical cable are surrounded by a shield of an electrically conductive metal or of a semi-conductive plastics material sufficiently conductive to reduce arcing and/or joule heating. Preferably, a preformed helix constituting a damper extends lengthwise of the shield and may extend lengthwise of the part of the length of the fitting, the overall outer diameter of the preformed helix over a part of its length remote from the fitting increasing smoothly in a direction away from the fitting. Where the shield is a preformed helix of a semi-conductive plastics material, the preformed helix may be so shaped over a part of its length remote from the fitting that the preformed helix serves the dual purposes of a shield and a damper.
Bicc Public Limited Company
Fetherstonhaugh & Co.
Rowland Simon M.
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