Spring-Loaded Closure Arm for Fishing Hook Gap

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Solution Overview

Problem

Conventional fishing hooks often allow caught fish to unhook due to their open gap design, necessitating an improved system to prevent fish escape during retrieval.

Innovation Solution

A spring-activated closure arm mechanism that encloses the hook gap, held under tension and released by the weight of the caught fish, ensuring the hook remains closed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the hook gap is kept open for easy baiting, then ease of operation is improved, but reliability deteriorates because fish can unhook

Engineering Contradiction:

Improveease of baitingVSAvoidfish retention

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The hook gap is made dynamic through a spring-loaded closure arm that can open and close. The arm is held open by spring tension during baiting for ease of operation, and closes automatically when triggered by fish weight or manual activation, providing reliable fish retention. This dynamic mechanism allows the hook to adapt between two states: open for baiting and closed for catching.

Inventive Principle:

Principle #15Dynamics

2Reliability

If a closure mechanism is added to prevent fish escape, then reliability is improved, but device complexity increases

Engineering Contradiction:

Improvefish retentionVSAvoidmechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The closure arm is designed to be self-activating through a trigger mechanism. When a fish is hooked and its weight is applied, or when manually triggered, the mechanism automatically releases the spring tension, causing the closure arm to snap shut and secure the fish. This self-service feature eliminates the need for continuous manual intervention to maintain the closed state, reducing operational complexity while maintaining high reliability.

Inventive Principle:

Principle #25Self-service

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 mechanism effectively prevents fish from unhooking, increasing successful catch rates by maintaining the fish on the hook until retrieval.

Implementation Method 1

the closure arm is supported on a torsion spring, the torsion spring including a spring coil and a lower spring arm

Methodology Applied

Scientific EffectTorsion spring: Torsion Spring

Implementation Method 2

the closure arm is held under spring tension in the open position, and springs to the closed position when released from spring tension

Methodology Applied

Scientific EffectElastic potential energy: Elasticity

Implementation Method 3

the weight of a fish caught within the fishing hook is configured to release the closure arm from spring tension

Methodology Applied

Scientific EffectGravitational force: Gravitation

Data Source

PatentUS12016318B1Fishing hook with spring loaded gap closure

Publication Date: 2024.06.25 HUBSCH MATTHIAS

AI summary

A fishing hook includes a closure arm held under spring tension and configured to enclose a hook gap within the hook when released from spring tension, to prevent a fish from becoming unhooked during retrieval.