Watercraft Tow Attachment With Built-In Sacrificial Load Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current tow attachment systems for watercraft require additional steps before engaging in tow activities and may be bypassed or forgotten, posing a safety risk.
Innovation Solution
A tow attachment system with a first part rigidly connected to the watercraft and a second part connected to the tow rope, which disconnects at a predetermined load, featuring a mechanical sacrificial connecting portion with lower strength than the first and second parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical fuse is attached in series between the tow point and the tow rope, then the system can break at a predetermined load, but additional steps are required prior to engaging in tow activities which may be bypassed or forgotten
Solution Approach 1:
The patent combines the mechanical fuse function directly into the tow attachment structure itself, merging the safety device and the attachment device into a single integrated component. The connecting portion with reduced breaking strength is built into the tow attachment, eliminating the need for separate mechanical fuses and reducing the number of assembly steps required by the user.
Solution Approach 2:
The tow attachment automatically performs the safety function through its design - the connecting portion is pre-configured with lower breaking strength than the first and second parts, so it will automatically fail first when excessive load is applied. This self-regulating mechanism requires no user intervention or additional steps, as the safety feature is built into the structure itself.
2Reliability
If the connecting portion has lower breaking strength than the first and second parts, then automatic disconnection occurs at excessive load, but the connecting portion must be designed with specific geometric features reducing its strength
Solution Approach 1:
The patent applies local quality by creating a specific region (the connecting portion) with different structural properties than the rest of the component. The connecting portion has reduced wall thickness and/or smaller cross-sectional dimensions compared to the first and second parts, making it the weakest link in the structure. This localized variation in geometry achieves the desired strength differentiation without requiring complex overall design.
Data Source
AI summary
A tow attachment for a watercraft is disclosed. The tow attachment is configured to attach a tow rope to the watercraft, and has a first part and a second part that is connected to the first part by a connecting portion. The first part is configured for rigid connection to the watercraft, and the second part is configured to attach to the tow rope. The second part disconnects from the first part about the connecting portion in response to the tow rope applying a load above a predetermined load to the second part. A tow pylon assembly having a tow pylon and the tow attachment connected to the tow pylon is also disclosed. A watercraft with the tow attachment and a watercraft with the tow pylon assembly are also disclosed.