Yacht Fender Hook with Resilient Lining for Cap Rail Protection

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Solution Overview

Problem

Conventional fender hooks engage cap rails and hull surfaces loosely due to steep inward tapering in new yacht designs, causing stress and potential damage, and lack versatility for holding additional items like mooring whips or fishing rods.

Innovation Solution

A fender hook with a rigid core, leather exterior, and sheep's wool interior, featuring a central portion for snug cap rail engagement, offset portions for secure hull contact, and integrated pad eyes for rope guidance, along with optional holders for fishing rods and mooring whips.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional fender hook is used on yachts with steep inward tapering, then the hook can be easily manufactured and installed, but it engages the cap rail loosely causing stress and potential damage

Engineering Contradiction:

Improvesecure engagement of fender hookVSAvoidstress on cap rail edges

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The fender hook incorporates a resilient non-abrasive lining specifically at the contact surface that engages the cap rail. This localized modification provides conformability and cushioning exactly where needed to distribute stress and prevent damage to the cap rail edges, while the rest of the hook maintains its structural integrity.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The invention changes the physical parameters of the hook's contact surface by adding a resilient lining material with different mechanical properties than the rigid hook body. This lining allows the hook to adapt to the steep inward taper geometry, providing secure engagement without concentrating stress on the cap rail edges.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If conventional fender hooks are used, then the structure remains simple, but the functionality is limited to basic fender suspension only

Engineering Contradiction:

Improvemulti-functionality of fender hookVSAvoidstructural complexity of fender hook

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fender hook is designed with integrated attachment points and structural features that enable it to perform multiple functions: suspending fenders, holding fishing rods, and securing mooring whips. These additional functionalities are incorporated into the basic hook structure through strategically placed attachment points and reinforced sections.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention merges the basic fender suspension function with additional utility functions by integrating attachment points for fishing rods and mooring whips directly into the hook structure. This combination allows a single device to serve multiple purposes on the yacht.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS7293518B1Yacht fender hook

Publication Date: 2007.11.13 GASSEW GARRY L

AI summary

A fender hook for a boating vessel is provided. The fender hook includes a rigid core form having a leather outer covering and a sheep's wool interior lining. The fender hook is particularly designed for use with yachts having a relatively steep-pitched exterior hull wall. In further aspects, the fender hook may have a fishing rod holder or a mooring whip holder fixedly attached thereto.