Elastomeric Ribbed Protective Sleeve for Lashing Slings
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Solution Overview
Problem
Existing protective elements for textile lashing or slinging means, particularly those with polyurethane coatings, become brittle and fail under rough use and unfavorable environmental conditions, leading to impaired functionality.
Innovation Solution
A protective element with two coupled fabric layers, where elastomer threads woven into the fabric form outwardly projecting ribs, acting as a non-continuous plastic layer, providing high friction for secure holding and low friction for easy sliding, using natural or synthetic rubber and high-strength plastic threads for durability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a polyurethane coating is applied to the fabric protective hose, then abrasion resistance is improved, but the coating becomes brittle and fails under rough use and unfavorable environmental conditions
Solution Approach 1:
The patent removes the problematic polyurethane coating entirely and replaces it with a fabric layer featuring outwardly projecting ribs made of elastomeric threads. This extraction eliminates the brittleness issue while preserving the protective function through the ribbed fabric structure alone.
Solution Approach 2:
The protective element combines fabric material with elastomeric threads woven into ribs, creating a composite structure that integrates the durability of fabric with the flexibility and abrasion resistance of elastomeric materials, avoiding the brittleness of polyurethane coatings.
2Force
If elastomer threads are woven into the fabric layer to form outwardly projecting ribs, then friction coefficient with the object is increased for secure holding, but the lashing means must slide with low friction inside the protective element
Solution Approach 1:
The patent applies different surface characteristics to different locations: the outer surface features outwardly projecting ribs made of elastomeric threads to increase friction with the object, while the inner surface maintains a smooth fabric structure to reduce friction with the lashing means, enabling both secure holding and easy operation.
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 solution ensures long-lasting functionality with high friction for secure object holding and low friction for easy tensioning, maintaining performance under harsh conditions without embrittlement, thus protecting the lashing means and facilitating smooth operation.
Implementation Method 1
elastomer threads woven into the fabric layer, which form outwardly projecting ribs on the fabric layer... elastomers used at this point, i.e. rubber-elastic plastics, typically in connection with, for example, smooth objects made of metal, wood, etc. that are to be lashed down, have high coefficients of friction
Implementation Method 2
the textile lashing or slinging device guided through the protective element or the protective hose can be properly tightened with the aid of a ratchet, for example, because significantly lower coefficients of friction are observed inside the protective hose or protective element
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a protective element, in particular a fabric protective sleeve, which is used to encase textile lashing or lifting slings (1) for lifting, tensioning, or lashing objects (2). The protective element has at least one fabric layer (3) facing the object (2) and a plastic layer (6) between the fabric layer (3) and the object (2). According to the invention, the plastic layer (6) consists of elastomeric threads (6) woven into the fabric layer (3), which form ribs (7) projecting outwards beyond the fabric layer (3).