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Optical fiber communications cable

  • US 4,723,831 A
  • Filed: 12/02/1985
  • Issued: 02/09/1988
  • Est. Priority Date: 12/02/1985
  • Status: Expired due to Fees
First Claim
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1. A communications transmission cable comprising(a) a core member having a longitudinal axis and comprising at least one optical fiber and first means surrounding the fiber;

  • (b) a first jacket having a longitudinal axis and an inner and an outer surface and comprising a polymeric material, the first jacket enclosing the core member and being substantially coaxial with the core member; and

    (c) three groups of non-metallic strength members, disposed between the inner and the outer first jacket surfaces in a generally longitudinal direction, each group of strength members comprising one or more strength members and having a longitudinal axis, the longitudinal axis of each group of strength members being a distance R from the first jacket longitudinal axis and being spaced substantially 120°

    from the longitudinal axis of each of the remaining two groups, with R>

    1.155(r+rs), each strength member comprising a plurality of filaments that are gathered together, and each strength member being coupled to the first jacket.

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