Unitube Ribbon Breakout Structure for Standardized Fiber Splitting

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Solution Overview

Problem

Existing unitube breakout kits lack standardized and repeatable processes for efficiently organizing and protecting fiber optic fibers as they transition from large groupings to smaller groupings, leading to varied quality and serviceability, and often require large slack baskets that limit splice tray capacity.

Innovation Solution

A unitube breakout kit with a top and bottom portion, featuring fasteners and slots for securing fiber optic lines and tubes, allowing for standardized splitting and improved protection, reducing wear and abrasion, and eliminating the need for large slack baskets.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional breakout methods are used without standardized fixtures, then flexibility in handling different cable configurations is maintained, but manufacturing precision and repeatability of fiber splitting processes deteriorate

Engineering Contradiction:
Improvefiber splitting precisionVSAvoidbreakout kit structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The breakout kit is divided into modular components including a body portion with cavity, a lid portion, and multiple slot assemblies that can be independently positioned. This segmentation allows for standardized fiber splitting while maintaining adaptability through reconfigurable slot positions at different locations around the cavity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cavity portion serves multiple functions: it receives and secures the unitube cable, provides a workspace for fiber splitting, and accommodates various slot configurations. The standardized cavity design can adapt to different cable types and splitting requirements, achieving universality without sacrificing precision.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If large slack baskets are used to manage fiber optic cables, then fiber protection and organization are improved, but splice tray capacity is reduced

Engineering Contradiction:
Improvefiber protectionVSAvoidsplice tray capacity
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The invention extracts the fiber management function from the traditional large slack basket and integrates it directly into the breakout kit body. The cavity portion provides localized fiber protection and organization at the exact location where splitting occurs, eliminating the need for separate slack baskets and freeing up splice tray capacity.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The breakout kit merges multiple functions into a single integrated unit: the body portion combines fiber reception, protection, organization, and splitting capabilities. By merging the slack management function into the breakout structure itself, the system reduces the total volume of equipment needed while maintaining fiber protection reliability.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If unitube cables are opened without protective measures, then ease of access to fibers is improved, but fiber optic fibers are exposed to wear and abrasion from sheath openings

Engineering Contradiction:
Improvefiber accessVSAvoidfiber wear and abrasion
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The cavity portion provides a protective environment before fibers are exposed during splitting. The structured cavity with integrated slots guides the cable opening process and supports fibers in a protected manner, preventing contact with harsh external surfaces that would cause wear and abrasion.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The breakout kit body acts as an intermediary between the harsh external environment and the delicate fiber optic cables. The cavity and slot structures provide a controlled intermediate zone where cables can be opened and manipulated without direct exposure to damaging surfaces, reducing wear while maintaining accessibility.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3997499B1Unitube ribbon breakout
Publication Date: 2026.03.18 PREFORMED LINE PRODUCTS COMPANY
  • EP3997499B1 patent drawingFigure 1
  • EP3997499B1 patent drawingFigure 2
  • EP3997499B1 patent drawingFigure 3

AI summary

A unitube breakout kit includes a bottom portion extending from a neck end to an outlet end. A top portion is selectively attached to the bottom portion. The bottom portion and the top portion together define a central cavity configured to contain at least one of fiber optic fibers or ribbon fibers. The bottom portion defines a first pair of slots configured to cooperate with a fastener to attach at least one of fiber optic core tube or unitube ribbon cable to the bottom portion.