Screw-Cavity Fitting for Custom Anti-Torsion Rope Securing

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Solution Overview

Problem

Existing anti-torsion rope fittings are difficult to install, require separate components, and are not customizable in length, making them cumbersome for on-site use in sailing applications.

Innovation Solution

A fitting with a cavity that secures anti-torsion rope ends using screws penetrating through the sides, creating a mechanical connection and friction within the cavity, allowing for easy installation and customizable rope lengths.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional clamp and line terminator components are used to secure anti-torsion rope, then the rope can be secured, but the installation becomes difficult and complex requiring multiple separate components to be held in specific orientations

Engineering Contradiction:
Improverope securing reliabilityVSAvoidinstallation ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent combines the clamp and line terminator into a single integrated fitting with a cavity that receives the rope end. The fitting includes built-in screw openings that allow direct attachment without requiring separate clamp and line terminator components, simplifying the installation process while maintaining secure rope attachment

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated fitting serves multiple functions simultaneously: it acts as both the clamp structure and the line terminator, provides the cavity for rope reception, and includes the screw attachment mechanism. This multi-functionality eliminates the need for multiple separate components and their specific orientation requirements during installation

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

2Ease of manufacture

If pre-manufactured anti-torsion rope stays are used, then the rope stay is ready for use, but the length cannot be modified and must be purchased in predetermined lengths

Engineering Contradiction:
Improvereadiness for useVSAvoidlength customization
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent divides the anti-torsion rope stay into a modular system where the rope length can be independently selected and the fitting is designed to accommodate any length. The cavity and screw mechanism allow the fitting to be attached to rope of various lengths, enabling customization rather than being constrained by pre-determined length options

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The fitting design allows for dynamic adjustment of rope length accommodation. The cavity can receive rope ends of varying lengths, and the screw mechanism can be positioned to securely attach the rope regardless of its length, providing adaptability rather than fixed predetermined lengths

Inventive Principle:
Principle #15Dynamics

3Ease of manufacture

If pre-manufactured stays are used, then the connection is pre-assembled, but the stays cannot be put together on an as-needed basis in remote locations

Engineering Contradiction:
Improvepre-assemblyVSAvoidon-site assembly capability
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The fitting is designed as a pre-prepared component with the cavity and screw openings already formed, but requiring only the simple action of inserting the rope end and tightening the screws. This preliminary preparation of the fitting structure eliminates the need for complex pre-assembly while enabling quick on-site installation without requiring manufactured stays to be assembled beforehand

Inventive Principle:
Principle #10Preliminary action

4Reliability

If separate clamp and line terminator components are used, then the rope can be secured, but the components must be installed sufficiently close to the line terminator to keep it in the rope loop

Engineering Contradiction:
Improverope securing reliabilityVSAvoidcomponent arrangement complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the clamp and line terminator into a single integrated fitting that includes the cavity for rope reception and the screw attachment mechanism. This elimination of separate components removes the complexity of arranging and installing multiple components close together, while the integrated design maintains reliable rope securing through the cavity and screw mechanism

Inventive Principle:
Principle #5Merging (Combining)

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

Facilitates easy installation and secure attachment of anti-torsion rope to fittings or surfaces, enabling on-site customization and simplifying the assembly process.

Implementation Method 1

The penetration of the rope by the screws creates a mechanical connection between the rope and the fitting

Methodology Applied
Scientific EffectMechanical connection: Mechanical Fastener

Implementation Method 2

The penetration of the rope by the screws also presses the rope against the sides of the cavity and causes the rope to expand within the cavity to create friction between the rope and the surface of the cavity thereby further securing the rope within the fitting

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS20250223021A1Fitting and method for securing Anti-torsion rope
Publication Date: 2025.07.10 FRANTA JOHN E
  • US20250223021A1 patent drawing
  • US20250223021A1 patent drawing
  • US20250223021A1 patent drawing

AI summary

The invention provides a fitting for securing anti-torsion rope without requiring the wrapping of the rope around the fitting or the assembly of separate components, such as clamps and line terminators. The invention provides a customizable, readily available system for securing anti-torsion rope and avoids the need for purchasing anti-torsion ropes with pre-manufactured connections.