Safety Eyelet Load Indication via Pivotable Retaining Ring
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Solution Overview
Problem
Existing safety eyelet systems for removable anchor points lack a clear indication of load exceeding a limit value, leading to potential unsafe reuse after a fall, as the system cannot easily determine if it has been subjected to high loads, compromising the safety of individuals secured to them.
Innovation Solution
The safety eyelet system incorporates a pivotable retaining ring with limited pivoting angles that only release when the load exceeds a predetermined limit value, allowing for a clear indication of load exceeding safety limits, and includes design features such as breakable stops and reversible release mechanisms to prevent damage and ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the safety eyelet is designed with a pivotable retaining ring to allow loading in any direction, then the adaptability and ease of operation are improved, but it becomes impossible to determine whether the safety eyelet has been subjected to high loads
Solution Approach 1:
The patent employs visual indicators (such as color-coded markers or visible deformation features) on the retaining ring or bolt that change state when the pivoting angle exceeds a safe threshold. This allows the load history to be visually detected without restricting the pivotable design, resolving the contradiction between adaptability and information loss.
2Ease of operation
If the retaining ring is made fully pivotable without angle limits, then the ease of operation is improved, but the risk of damage to building walls and safety compromises increase
Solution Approach 1:
The patent incorporates pre-set mechanical stops or angular limits on the pivoting mechanism that prevent the retaining ring from rotating beyond a safe angle. This preliminary constraint counteracts the potential harmful effect of excessive pivoting that could damage building walls, while still allowing sufficient operational flexibility.
3Productivity
If the safety eyelet allows reuse after loading, then productivity is improved, but reliability decreases due to potential unsafe reuse
Solution Approach 1:
The patent implements a feedback mechanism through visual indicators that clearly show when the safety eyelet has been subjected to high loads. This feedback system prevents unreliable reuse by making the load history transparent, allowing users to immediately identify and replace compromised safety eyelets while maintaining productivity through systematic replacement rather than uncertain reuse.
Data Source
Figure 1~2
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Figure 5
AI summary
Securing eyelet (1) with a bolt (3) and a retaining ring (4) connected to the bolt (3) and means for indicating a load on the securing eyelet (1) exceeding a limit value.