Rotating Deep Fiber Push Connector for Coaxial Cable

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Solution Overview

Problem

Conventional methods for installing fiber optic micro cables deeper into the network require digging and trenching, causing damage to customer landscaping and utilities, and existing connectors for coax ejection and fiber injection techniques are cumbersome and require multiple specialized fittings.

Innovation Solution

A connector system with rotatable components that allows for the secure coupling of hollowed-out aluminum shields of coaxial cables, facilitating the ejection of the coax core and injection of fiber optic cables while minimizing damage and the need for multiple fittings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional connectors are used for coax ejection and fiber injection, then the cable can be connected, but multiple specialized fittings are required making the device complex

Engineering Contradiction:
Improveconnector functionalityVSAvoidnumber of fittings
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple specialized fittings (coax ejection fitting, fiber injection fitting, and cable connector) into a single integrated connector assembly. This allows the aluminum shield to be ejected, fiber optic cable to be injected, and electrical connection to be established through one unified device rather than requiring separate fittings for each function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The connector is designed to perform multiple functions: it serves as a coax ejection fitting, a fiber injection fitting, and an electrical connector all in one component. This multi-functional design eliminates the need for multiple specialized fittings while maintaining adaptability to different installation requirements.

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

2Reliability

If the connector is tightened to secure the cable, then connection reliability improves, but frictional contact may damage the hardline cable

Engineering Contradiction:
Improveconnection securityVSAvoidcable damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The connector body is segmented into functional zones: a compression zone with teeth for gripping the aluminum shield, a rotation zone that allows the connector to spin during tightening, and a sealed zone for electrical connection. This segmentation allows the tightening force to be applied to the connector structure rather than directly to the cable, preventing damage while ensuring secure connection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connector body acts as an intermediary between the tightening force and the hardline cable. The compression teeth and rotation mechanism mediate the application of force, distributing it appropriately to secure the cable without causing frictional damage to the cable insulation or conductor.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Length of moving object

If fiber optic cable is injected through the aluminum shield, then deeper network deployment is enabled, but the installation process becomes more complex

Engineering Contradiction:
Improvefiber deployment distanceVSAvoidinstallation process
Core Design Contradiction:
Length of moving objectVSDevice complexity

Solution Approach 1:

The connector is pre-configured with the aluminum shield already in place and the fiber injection pathway prepared. The aluminum shield serves as a pre-established conduit that guides the fiber optic cable through the connector body, eliminating the need for complex routing or additional installation steps for deep network deployment.

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables efficient and minimally invasive fiber optic cable deployment by allowing for the creation of longer continuous lengths of hollowed-out coax cables with reduced impact on customer infrastructure and streamlined connector usage.

Implementation Method 1

A first washer is disposed in the first connector body and is configured to permit the aluminum shield to be pushed in a first direction through the through hole and into the cavity while resisting movement of the aluminum shield in a second direction opposite to the first direction

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

A second washer is disposed in the second connector body and is configured to permit the tubular member to be pushed in the second direction through the through hole of the second connector body and into the cavity of the second connector body while resisting movement of the tubular member in the first direction

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 3

The first connector body has a threaded portion and the second connector body has a complementary threaded portion, and the two connector bodies are coupled together by screwing the threaded portions together

Methodology Applied
Scientific EffectThreaded fastening: Screw

Data Source

PatentUS11689004B2Deep fiber push connector that allows for rotation during tightening without damaging cable
Publication Date: 2023.06.27 PPC BROADBAND INC
  • US11689004B2 patent drawing
  • US11689004B2 patent drawing
  • US11689004B2 patent drawing

AI summary

A connector includes a first connector body and a second connector body configured to be coupled to one another. The first connector body has a through hole and a cavity. The through hole and the cavity are configured to receive a shield of a hardline coaxial cable. A first washer is disposed in the first connector body and is configured to permit the shield to be pushed in a first direction through the through hole and into the cavity while resisting movement of the shield in a second direction opposite to the first direction. The second connector body has a through hole and a cavity. The through hole and the cavity of the second connector body are configured to receive a tubular member. A second washer is disposed in the second connector body and is configured to permit the tubular member to be pushed in the second direction through the through hole of the second connector body and into the cavity of the second connector body while resisting movement of the tubular member in the first direction. The second connector body is rotatable relative to the second washer and the tubular member until the second connector body and the first connector body are coupled together to a predetermined degree of tightness.