Line-Guided Fish Landing Net with Automatic Deployment

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Solution Overview

Problem

Existing fishing apparatuses, such as gaff hooks and traditional landing nets, are inadequate for efficiently and safely landing large game fish, often causing injury to the fish and limiting the effectiveness of 'Catch and Release' practices.

Innovation Solution

A line-guided fish landing net apparatus that securely attaches to a fishing line, featuring a guide rod with quick-connect clips, pivotally configurable arms, and pre-rolled net tubes that deploy into upper and lower net sections with flotation and weight assistance, allowing the net to automatically deploy and immobilize the fish.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a gaff hook is used to land large fish, then the fish can be securely landed on the vessel, but the fish suffers severe injury

Engineering Contradiction:
Improvefish landing securityVSAvoidfish injury
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The landing net is divided into multiple sections including a head section, body section, and hoop sections that can independently deploy and function. The net is segmented into panels that can flex and adapt to the fish's movement while maintaining capture effectiveness

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The landing net serves as an intermediary tool between the fisherman and the fish, allowing secure handling without direct contact with the fish's body. The net panels and hoops act as a buffer that distributes force evenly, preventing concentrated pressure points that would cause injury

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If a traditional landing net is used, then the fish can be landed, but the net is too small for large game fish

Engineering Contradiction:
Improvefish capture capabilityVSAvoidnet size
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The landing net transitions from a compact stowed configuration to a fully deployed large configuration. The telescoping hoops and expandable body section allow the net to dynamically increase its surface area from a small portable form to a large game fish-sized net when needed

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The landing net components are nested within each other in a compact form for portability. The hoops are telescoping and can be stored inside the body section, while the net panels are rolled or folded within the hoop structure, allowing a large net to be contained in a small package

Inventive Principle:
Principle #7Nested doll (Nesting)

3Reliability

If a landing net is deployed manually, then the fish can be captured, but manual intervention is required which slows the process

Engineering Contradiction:
Improvefish capture effectivenessVSAvoiddeployment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The landing net automatically deploys itself when attached to the fishing line and lowered into the water. The net sections self-assemble through water resistance and gravitational forces, with the hoops extending outward and the net panels unfurling without requiring manual operation

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The landing net is pre-configured in a compact stowed state that automatically transitions to the deployed configuration upon contact with water. The quick-connect attachment mechanism is pre-positioned on the fishing line, ready to engage without requiring additional manual steps

Inventive Principle:
Principle #10Preliminary action

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 apparatus effectively limits the mobility of large game fish, making it easier to land them on a fishing vessel while minimizing harm to the fish, and can automatically deploy and configure to capture the fish without manual intervention.

Implementation Method 1

The upper net sections are adapted with flotation devices and the lower net sections are adapted with weights to enable deployment thereof

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Implementation Method 2

The upper net sections are adapted with flotation devices and the lower net sections are adapted with weights to enable deployment thereof

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS12207630B1Fish landing net
Publication Date: 2025.01.28 IGNATIEV MAXIM
  • US12207630B1 patent drawing
  • US12207630B1 patent drawing
  • US12207630B1 patent drawing

AI summary

A line guided fish landing net apparatus is affixed to a fishing line upon hooking a fish and placed in the water wherein nets are automatically deployed as the apparatus travels down the line. Once the net apparatus reaches the fish it wraps and entangles it thereby significantly diminishing its ability to thrash about making it much easier to land a large fish on a sport fishing vessel. An upper net section has a top peripheral edge thereof configured to be positively buoyant to spread to a deployed position, and a lower net section has a bottom peripheral edge configured to be negatively buoyant to spread to a deployed position.