Ligature Cinch Attachment for Secure Knot-Free Termination
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Solution Overview
Problem
Standard hardware such as hooks and carabiners require knowledge of proper knot-tying to securely terminate ligatures, which can fail under tensile force due to open loop configurations, lacking the structural integrity of closed loop terminations.
Innovation Solution
A ligature attachment device with a cinch aperture configuration that frictionally holds a ligature in place, featuring a loop retainer to prevent slippage and a tool section for coupling with hardware, providing a secure and removable termination mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If open loop termination is used with standard hardware, then ease of operation is improved, but strength and reliability deteriorate due to lack of structural integrity
Solution Approach 1:
The device is divided into distinct functional segments: a tool section (hook or eyelet) for hardware attachment, a ligature spool section with cinch aperture for ligature termination, and a loop retainer section for preventing slippage. This segmentation allows each component to optimize its specific function while working together to achieve both ease of operation and high strength.
Solution Approach 2:
The ligature spool section with cinch aperture acts as an intermediary between the hardware attachment point and the ligature termination point. This intermediate structure provides a controlled path for the ligature, enabling simple operation while maintaining structural integrity through frictional engagement and geometric constraint.
2Strength
If knot-tying is required for secure termination, then strength is improved, but device complexity and difficulty of operation increase
Solution Approach 1:
The invention extracts the complex knot-tying operation from the termination process and replaces it with a simple friction-based cinching mechanism. The cinch aperture and spool geometry provide the necessary mechanical advantage and constraint to achieve secure termination without requiring user knowledge of knot-tying techniques.
Solution Approach 2:
The ligature spool section is designed to automatically cinch the ligature in place through frictional engagement as the ligature is pulled tight. The geometry of the spool and cinch aperture creates a self-locking effect that secures the ligature without requiring additional fastening operations or complex user intervention.
3Ease of operation
If open loop configuration is used, then ease of operation is improved, but reliability deteriorates under tensile force
Solution Approach 1:
The device transitions from a static open loop configuration to a dynamic cinching system where the ligature actively engages with the spool and cinch aperture. As tensile force is applied, the ligature naturally cinches tighter against the spool, increasing frictional engagement and reliability while maintaining ease of initial operation.
Solution Approach 2:
The invention changes the operational parameters of the termination system by introducing a cinch aperture with specific geometric constraints. This creates a controlled frictional engagement zone where the ligature transitions from a loose configuration to a tightly cinched state, dramatically improving reliability under tensile force while keeping the operation simple.
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 device offers a stronger ligature termination than open loop configurations, allowing for easy and secure attachment and removal from various hardware, enhancing structural integrity and usability.
Implementation Method 1
a cinch aperture to frictionally hold a ligature in place
Data Source
AI summary
A ligature attachment device for use with a ligature is disclosed, the ligature attachment device comprising a proximal section comprising a loop retainer section, a distal section comprising a tool section, a central section comprising a central ligature spool section having a centrally located cinch aperture and the central ligature spool section is coupled to the loop retainer section and the tool section. The loop retainer section having a loop retainer profile configured to retain a loop of the ligature frictionally engaged with the central ligature spool section. The cinch aperture having an aperture shape configured to allow at least two sections of a ligature to be removably retained in the cinch aperture whereby the cinch aperture can removably retain the loop of the ligature. The tool section comprises a first tool for removably joining a second tool.