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US 4,374,608 AGranted
Fiber optic cable
AssigneeBelden Inc.
InventorGene S. Anderson
Life of this patent
Estimating the term…
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AssigneeBelden Inc.
InventorGene S. Anderson
Estimating the term…
A fiber optic cable and method for making same wherein the cable includes at least one elongate fiber optic element, a nonmetallic tubular shield disposed substantially coaxially along the length of the fiber optic element, and a nonmetallic braided strength member disposed coaxially along the length of the tubular shield layer in tight fitting relation thereon. The braided strength member is selected to have greater tensile strength and lower elongation per unit length than the fiber optic element so that any tensile load applied to the cable is taken substantially by the braided strength member so as to prevent undesirable elongation and damage to the fiber optic element. In a preferred embodiment, an abrasion resistant layer is disposed between the braided strength member and the tubular shield, and a protective jacket is formed over the braided strength member. In another embodiment, a second braided strength member is formed coaxially over the first jacket layer and a second outer protective jacket is formed coaxially over the outer braided strength member.
A fiber optic cable comprising at least one elongated fiber optic element, a nonmetallic tubular flexible and substantially radially noncompressible shield layer disposed substantially coaxially along the length of said fiber optic element in loose fitting relation thereon, and a nonmetallic braided strength member disposed coaxially along the length of said shield layer in tight fitting relation thereon, said braided strength member consisting of a plurality of discrete strands of nonmetallic material braided together along the length of said tubular shield layer so as to cover substantially the full outer peripheral surface of said tubular shield layer, said discrete strands being braided so that the discrete strands are wound in intertwined opposite helical relation along the length of said shield layer with the strands common to each helical direction being in substantially parallel contacting relation, said braided strength member having greater tensile strength and lower elongation per unit length than said fiber optic element so that the major portion of any tensile load acting on said cable is taken substantially by said braided strength member.
A method of making a flexible fiber optic cable comprising the steps of:
Dependencies are inferred from the claim text.