Multiduct Assembly with Tensile Reinforcement for High Pull Force
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Solution Overview
Problem
Existing multiduct or flatliner assemblies for optical fiber cables lack sufficient tensile strength, limiting their ability to be pulled through infrastructure channels without causing disruption and damage.
Innovation Solution
Incorporating a tensile strength unit within the multiduct or flatliner assembly, comprising longitudinal fiber rods, metal rods, aramid fibers, or fiberglass, which are loosely positioned and supported by an inner sheath, enhancing the assembly's tensile strength and allowing it to withstand higher pull forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a multiduct or flatliner assembly is pulled through infrastructure channels with high pull force, then the installation speed and productivity are improved, but the assembly lacks sufficient tensile strength and breaks
Solution Approach 1:
The patent applies composite materials by combining the outer sheath, longitudinal guides, and tensile strength units (fiber rods, metal rods, aramid fibers, or fiberglass) into a unified assembly. This composite structure allows the assembly to achieve both high tensile strength for withstanding pull forces and the functional properties of guiding optical fibers, thereby resolving the contradiction between installation speed and tensile strength.
2Strength
If the diameter of fiber rods is increased to significantly increase tensile strength, then the pull force tolerance is improved, but the overall diameter of the assembly increases
Solution Approach 1:
The patent applies local quality by strategically positioning tensile strength units (fiber rods, metal rods, aramid fibers, or fiberglass) within the outer sheath at specific locations where tensile strength is most needed during installation. This allows the assembly to achieve high pull force tolerance without uniformly increasing the overall diameter, as the reinforcement is localized to specific structural needs rather than distributed throughout the entire assembly.
Data Source
AI summary
A multiduct or flatliner assembly for guiding and protecting optical fiber cables or optical waveguides is provided, the multiduct or flatliner assembly including —an outer sheath supporting a plurality of first longitudinal guides being in parallel relationship with the outer sheath and —at least one tensile strength unit extending inside the outer sheath, and/or —at least one longitudinal fiber rod extending inside the outer sheath, and/or —at least one metal rod extending inside the outer sheath, and/or —aramid fibers extending inside the outer sheath, and/or —fiberglass extending inside the outer sheath, and —the plurality of first longitudinal guides is adapted for receiving optical fiber cable.