Rope Splice Diameter Consistency via Strand Extraction

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Solution Overview

Problem

Conventional rope termination methods, such as forming eye splices, often result in a thickened rope portion adjacent to the eye, which can adversely affect the rope's operation in certain environments.

Innovation Solution

A method and structure where selected strands are extracted and reinserted between defined splice locations to form a bridge portion, maintaining a consistent rope diameter and eliminating the thickened splice region, allowing for a smooth transition and operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional splicing techniques are used to form an eye in a rope, then the rope can be terminated to facilitate mechanical engagement, but a thickened rope portion is created in the splice region which adversely affects rope operation

Engineering Contradiction:
Improverope terminationVSAvoidrope operation
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The patent extracts the problematic thickened splice region by removing material from the rope ends and creating a tapered configuration. The eye formation process extracts excess rope material through controlled cutting and tapering, eliminating the bulk that causes operational issues while maintaining the structural integrity of the splice.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of adding material to create the eye (which would cause thickening), the patent inverts the approach by removing material to form the eye structure. The rope ends are tapered by cutting away material, and the eye is formed through this reduction rather than addition, fundamentally reversing the conventional splicing logic.

Inventive Principle:
Principle #13The other way round (Inversion)

2Reliability

If conventional splicing techniques are used to form an eye in a rope, then the rope can be secured to structures, but the thickened splice region creates operational adverse effects

Engineering Contradiction:
Improverope securingVSAvoidthickened portion
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent converts the potential harm of a thickened splice region into a benefit by deliberately creating a tapered configuration. The material removal process, which could be seen as weakening the rope, actually eliminates the harmful thickened portion while distributing stress more evenly through the tapered transition zones, improving overall reliability.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent changes the geometric parameters of the rope in the splice region by creating specific taper angles and controlled thickness variations. Instead of maintaining uniform thickness (which creates the harmful thickened portion), the rope dimensions are systematically varied through tapered cuts, transforming the splice region from a harmful bulk addition to a controlled geometric transition.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9340925B2Splice systems and methods for ropes
Publication Date: 2016.05.17 SAMSON ROPE TECHNOLOGIES LLC
  • US9340925B2 patent drawing
  • US9340925B2 patent drawing
  • US9340925B2 patent drawing

AI summary

A rope structure or method of forming a rope structure comprises a rope comprising a plurality of strands. The rope comprises first and second splice locations, an eye region between the first and second splice locations, and a main region. The main region of the rope is located adjacent to the first splice location and in an opposite direction along the rope from the eye region. At least one of the strands is a selected strand. An extracted portion of the at least one selected strand is extracted from the rope and inserted into the rope such that a bridge portion of the at least one selected strand extends between the first and second splice locations and a diameter of the rope is substantially consistent in the main region.