Rotating Cut-Resistant Sleeve for Climbing Ropes

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Solution Overview

Problem

Climbing equipment is vulnerable to lacerations and penetrations by knives, with existing protective devices failing to provide adequate protection and often not automatically adjusting to fit different sizes and lengths of equipment, leaving them exposed to accidental cuts.

Innovation Solution

A knife cut resistant sleeve made of cut-resistant material that rotates to prevent cutting and features a spring mechanism to adjust coverage based on the rope's length, fitting around various diameters and lengths of climbing equipment such as ropes and secondary lanyards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional protective devices are used, then abrasion protection is provided, but laceration and penetration protection is insufficient

Engineering Contradiction:

Improveprotection against knife cutsVSAvoidprotection effectiveness

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The protective sleeve combines multiple materials with different properties: a cut-resistant outer layer (Kevlar or Dyneema) for laceration protection, an elastic inner layer for flexibility and automatic size adjustment, and a spring mechanism for maintaining tension. This composite structure provides comprehensive protection against both abrasion and knife cuts while maintaining comfort and adaptability.

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If fixed-size protective devices are used, then manufacturing is simplified, but adaptability to different equipment sizes is reduced

Engineering Contradiction:

Improvefit to different rope sizesVSAvoidsleeve structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The protective sleeve incorporates an elastic inner layer that can dynamically stretch and compress to adapt to different rope diameters and lengths. This dynamic property allows a single sleeve design to fit multiple equipment sizes without requiring multiple fixed-size variants, while the spring mechanism dynamically adjusts to maintain proper tension and coverage.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The sleeve utilizes materials with varying elastic properties that allow it to change its physical parameters (length and diameter) based on the inserted equipment. The elastic layer's ability to deform elastically enables the sleeve to accommodate different rope sizes, while the spring mechanism changes its compression state to maintain optimal protective coverage.

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

If the sleeve is made rigid for cut resistance, then protection is improved, but flexibility and automatic adjustment are reduced

Engineering Contradiction:

Improveknife cut resistanceVSAvoidautomatic size adjustment

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The protective sleeve is divided into distinct functional layers: a rigid cut-resistant outer layer for protection, and a flexible elastic inner layer for adaptability. This segmentation allows each layer to perform its specific function optimally - the outer layer provides knife cut resistance while the inner layer enables automatic size adjustment and flexibility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The inner elastic layer acts as a flexible shell that conforms to the shape and size of the inserted equipment. This flexible component enables the rigid protective outer layer to adapt to different equipment dimensions while maintaining continuous protective coverage, combining the benefits of rigidity for protection and flexibility for adaptability.

Inventive Principle:

Principle #30Flexible shells and thin films

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

The sleeve effectively protects climbing equipment from knife cuts by rotating to deflect the blade and automatically adjusting to fit different rope sizes, ensuring continuous protection without exposing the equipment to accidental cuts.

Implementation Method 1

some embodiments have a spring within the sleeve to allow the sleeve to provide the correct amount of coverage on the rope, such that the sleeve extends when the rope is lengthened or compresses when the rope is let in

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

The sleeve can fit around ropes of multiple different lengths and diameters. Further, some embodiments have a spring within the sleeve to allow the sleeve to provide the correct amount of coverage on the rope, such that the sleeve extends when the rope is lengthened or compresses when the rope is let in.

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS11920296B1Knife cut resistant sleeve

Publication Date: 2024.03.05 BUCKINGHAM MFG CO INC

AI summary

Embodiments of the knife cut resistant sleeve comprise a spring enclosed by a cut resistant material. The knife cut resistant sleeve is configured to be placed onto a rope of varying sizes and protect the rope from sharp objects. Embodiments of the knife cut resistant sleeve use cut resistant material and can be capable of rotation when hit by a knife in order to prevent the rope from being cut. The sleeve is configured to provide the correct amount of coverage on the rope depending on the length of the rope.