Pre-assembled Pulling Eyes for Wire Installation

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Solution Overview

Problem

Existing wire and cable installation methods are labor-intensive and prone to errors, particularly in attaching pulling eyes, which can lead to reduced maximum pulling tension and increased risk of damage to conductors and equipment.

Innovation Solution

Integrated systems that include pre-assembled pulling eyes attached to conductors at the factory, allowing for standardized and efficient attachment of pulling ropes, reducing the need for on-site labor and minimizing conductor damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If pulling eyes are attached on-site during installation, then labor intensity increases and installation time increases, but flexibility in handling different installation scenarios is maintained

Engineering Contradiction:

Improveinstallation efficiencyVSAvoidattachment process complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The pulling eyes are pre-attached to the conductors at the factory before shipment to the installation site. This preliminary action eliminates the need for on-site attachment operations, reducing labor intensity and installation time while ensuring consistent, high-quality attachments that meet manufacturing specifications.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent combines the conductor and pulling eye into a single pre-assembled unit. This merging of components simplifies the installation process by eliminating separate attachment steps and ensures that the pulling eye is always properly and securely attached to the conductor.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If pulling eyes are pre-assembled at the factory, then manufacturing precision and connection reliability improve, but adaptability to on-site variations may be reduced

Engineering Contradiction:

Improveconnection reliabilityVSAvoidon-site adaptation flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If multiple conductors are pulled from multiple reels, then conductor selection flexibility is maintained, but installation time and coordination complexity increase

Engineering Contradiction:

Improveinstallation speedVSAvoidreel coordination complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent combines multiple conductors onto a single reel, creating a consolidated pay-off system. This merging of multiple reels into one reduces the coordination complexity of handling multiple reels simultaneously and accelerates the installation process by enabling all conductors to be paid out from a single location.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single reel is designed to hold and pay out multiple different conductors, making it a universal platform that replaces the need for multiple specialized reels. This multi-functional reel maintains conductor selection flexibility while eliminating the coordination challenges of managing multiple reels.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Object-affected harmful factors

If pulling eyes are attached on-site, then on-site adjustment flexibility is maintained, but the risk of conductor damage and attachment errors increases

Engineering Contradiction:

Improveconductor damage riskVSAvoidon-site attachment ease

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS9802785B2Systems and methods for facilitating wire and cable installations

Publication Date: 2017.10.31 SOUTHWIRE CO LLC

AI summary

Systems and methods for facilitating wire and cable installations are provided. According to embodiments, a system comprises a reel and a first parallel including a first conductor loaded onto the reel in a first layer. The system may further comprise a second parallel including a second conductor loaded onto the reel in a second layer. At least a portion of the second layer of the second parallel may be loaded on top of at least a portion of the first layer of the first parallel.