Inverted Cable Termination Potting for Filament Alignment

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The challenge in creating effective terminations for tensile strength members, such as cables, lies in achieving consistent and high breaking strength while ensuring proper alignment and load distribution of synthetic filaments, which is hindered by the random orientation and low surface friction of these filaments during the potting process, leading to variability in termination performance.

Innovation Solution

The method involves inverting the assembly of the anchor and tensile member, injecting pressurized potting compound, and applying controlled translation and tension to improve filament alignment and load distribution, while using vacuum chambers and seals to minimize void formation and ensure complete infusion of the potting compound.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If synthetic filaments are used in cable terminations, then tensile strength is improved, but filament alignment and load distribution deteriorate due to random orientation and low surface friction

Engineering Contradiction:

Improvetensile strengthVSAvoidfilament alignment

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The patent inverts the traditional potting process by filling the cavity with potting compound first, then inserting the cable with synthetic filaments. This reversal allows the filaments to be pushed into the already-filled cavity, forcing them into better alignment and ensuring more uniform load distribution across all filaments, thereby resolving the alignment and consistency issues while maintaining high tensile strength

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent applies preliminary action by pre-filling the anchor cavity with potting compound before cable insertion. This preliminary step creates a controlled environment that guides filament placement and ensures consistent alignment, eliminating the random orientation problem that occurs when potting is done after cable insertion in traditional methods

Inventive Principle:

Principle #10Preliminary action

2Ease of manufacture

If traditional potting process is used, then ease of manufacture is maintained, but termination performance consistency deteriorates due to variable filament alignment

Engineering Contradiction:

Improvepotting process simplicityVSAvoidtermination performance consistency

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

By inverting the sequence of operations—potting the anchor cavity before cable insertion—the patent maintains manufacturing simplicity while dramatically improving termination consistency. The inverted process eliminates complex alignment steps and ensures uniform filament distribution, making the process both easy to manufacture and highly reliable

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent uses a standardized inverted potting procedure that can be replicated across different cable terminations. This copying of the inverted process ensures consistent results every time, improving reliability while maintaining ease of manufacture through a repeatable, simple workflow

Inventive Principle:

Principle #26Copying

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

This approach enhances the breaking strength and consistency of terminations by improving filament alignment and load sharing, leading to more reliable and efficient load transmission in tensile members.

Implementation Method 1

The method comprises placing the anchor and cable in a vacuum chamber and removing air and gases from the chamber

Methodology Applied

Scientific EffectVacuum: Vacuum

Implementation Method 2

injecting pressurized potting compound

Methodology Applied

Scientific EffectPressurisation: Pressurisation

Data Source

PatentUS12123476B2Inverted injection method of affixing a termination to a tensile member

Publication Date: 2024.10.22 CAMPBELL RICHARD V

AI summary

A method for attaching an anchor to an end of a tensile member by inverting the assembly of anchor and tensile member and injecting pressurized potting compound. A length of filaments of the tensile member are placed within a cavity through the anchor. The anchor and filaments are placed in an inverted position, with the distal end of the anchor facing downward and the cable extending upward out of the anchor. If the anchor has an open distal end this is sealed. Liquid potting compound is injected into the anchor cavity and allowed to solidify. During the solidification process, a controlled translation (pulling) of the cable is preferably introduced.