Non-Metallic Cable Jacket Layout Without Conductor Cabling

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Solution Overview

Problem

Conventional electrical cables with non-metallic jackets, either cabled or bundled, face issues of high manufacturing cost and labor intensity, non-uniform appearance, and installation difficulties due to inconsistent shapes, which affect quality and user perception.

Innovation Solution

Electrical cables with conductors arranged approximately in parallel within a non-metallic jacket, eliminating the cabling step and using a binder cord to maintain alignment, allowing for a streamlined manufacturing process and uniform appearance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If cabling the inner conductors is used, then the cable has uniform appearance and consistent shape, but the manufacturing process becomes more labor-intensive and costly

Engineering Contradiction:
Improvecable uniformityVSAvoidmanufacturing cost
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent extracts and eliminates the cabling step from the manufacturing process. Instead of twisting conductors together in a cabling machine, the conductors are directly bundled and jacketed, removing the complex and costly cabling operation while maintaining acceptable cable uniformity through alternative methods.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the manufacturing process into distinct stages: conductor preparation, bundling, and jacketing. By separating these operations and allowing conductors to be prepared independently before final assembly, the process becomes more flexible and less labor-intensive while maintaining product quality.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If bundling the inner conductors is used, then manufacturing cost is reduced, but the cable appearance becomes non-uniform and installation becomes difficult

Engineering Contradiction:
Improvemanufacturing costVSAvoidcable uniformity
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent introduces a binder cord as an intermediary element that holds the bundled conductors together during the jacketing process. This simple component maintains conductor alignment and prevents random movement, achieving uniform cable appearance without the complexity of full cabling.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent performs preliminary alignment and bundling of conductors before the jacketing process. By pre-organizing the conductors in a controlled manner prior to jacketing, the final cable achieves uniform appearance and consistent shape without requiring post-processing or complex equipment.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If cabling the inner conductors is used, then conductor protection against movement and damage is improved, but the manufacturing process complexity increases

Engineering Contradiction:
Improveconductor protectionVSAvoidmanufacturing process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent removes the cabling machine and associated complex mechanisms from the manufacturing process. Conductor protection is achieved through simpler means such as proper bundling techniques and binder cords, eliminating the need for complex cabling equipment while maintaining conductor integrity.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent allows the conductor bundle to self-stabilize through the jacketing process itself. The jacket material provides protection and maintains conductor positioning without requiring complex pre-cabling mechanisms, letting the final product structure serve the protective function.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12002600B1Electrical cables with non-metallic jackets and methods of fabricating the same
Publication Date: 2024.06.04 ENCORE WIRE CORP
  • US12002600B1 patent drawing
  • US12002600B1 patent drawing
  • US12002600B1 patent drawing

AI summary

An electrical cable having a plurality of conductors including a grounding conductor and at least one power-carrying conductor. The plurality of conductors disposed approximately in parallel within an outer jacket such that the electrical cable has a substantially elongated horizontal cross-section.