Watercraft Tether Structure for Vertical Motion and Lateral Stability

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Solution Overview

Problem

Existing watercraft tethering devices do not allow independent vertical movements while resisting lateral movements, leading to abrupt movements and potential damage or injury from waves.

Innovation Solution

A watercraft tether device with end stabilizers and strap members that enable independent vertical movements while resisting lateral movements, using adjustable loops and securing mechanisms to engage with tethering structures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional rope or elastic chords are used to tether watercrafts, then the watercrafts can be connected, but they cannot allow independent vertical movements while resisting lateral movements, causing abrupt movements in response to waves

Engineering Contradiction:

ImproveIndependent vertical movement capabilityVSAvoidLateral movement resistance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The tethering system is divided into separate functional components: vertical allowance mechanisms (sliders, telescopic sections) and lateral resistance mechanisms (tension members, stabilizing crossbars). This segmentation allows each component to specialize in one direction of force, enabling vertical movement freedom while maintaining lateral stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Intermediary components such as sliders, telescopic sections, and stabilizing crossbars are introduced between the tethering points on watercrafts. These intermediaries act as mechanical mediators that selectively transmit forces - allowing vertical displacement while blocking lateral movement through geometric constraints and force redistribution.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If rigid tethering structures are used to resist lateral movements, then lateral stability is improved, but vertical movements are restricted and can cause damage or injury

Engineering Contradiction:

ImproveLateral movement resistanceVSAvoidAbrupt movements from wave displacement

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

Different parts of the tethering structure have different mechanical properties tailored to specific directional requirements. The lateral resistance elements (crossbars, tension members) are designed with high rigidity, while the vertical allowance elements (sliders, telescopic sections) are designed with high flexibility. This local differentiation of mechanical properties allows the structure to be rigid where needed and flexible where needed.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The tethering structure incorporates dynamic elements that can adapt their stiffness characteristics based on loading conditions. Sliders and telescopic sections provide variable resistance - low resistance in the vertical direction to accommodate wave motion, and high resistance in the lateral direction through geometric constraints and tension member engagement.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If adjustable loops and securing mechanisms are added to enable independent vertical movements, then vertical adaptability is improved, but device complexity increases

Engineering Contradiction:

ImproveVertical movement adjustment capabilityVSAvoidNumber of components and assembly steps

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Rather than designing a completely new complex mechanism for vertical adjustment, the patent uses partial action principles - simple adjustable loops and securing mechanisms that provide the necessary vertical adaptability without over-engineering. The solution implements only the minimum required complexity to achieve the function.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The adjustable loops and securing mechanisms serve multiple functions: they provide vertical adjustment capability, allow for easy installation and removal, and can accommodate different watercraft sizes and configurations. This multi-functionality reduces the need for separate specialized components for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260042507A1Watercraft Tether Device

Publication Date: 2026.02.12 AQUALOC LLC

AI summary

A watercraft tether device includes a shaft member having opposing ends, and end stabilizers respectively provided at the opposing ends of the shaft member. The end stabilizers each include a lateral stabilizing portion that extends orthogonally with respect to the shaft member and has an outer edge that extends from a first end of the lateral stabilizing portion to a second end of the lateral stabilizing portion. One or more strap members of the watercraft tether device may be respectively engaged with the end stabilizers such that portions of the strap members form adjustable loops extending from the end stabilizers for removably engaging with tethering structures of watercrafts. Also disclosed is a method of using a plurality of watercraft tether devices to tether together watercrafts floating in a body of water, and a strap system engaged with an end stabilizer of the watercraft tether device.