Fishing Bait Dispenser With Dry Live-Bait Path and Gradual Release

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Solution Overview

Problem

Existing fishing methods, such as net fishing and long-line fishing with hundreds of hooks, are inefficient and often result in by-catch mortality, while conventional baiting methods fail to effectively attract fish due to overfeeding and premature wetting of live bait.

Innovation Solution

A device with a floating compartment for dry bait and a live bait compartment connected via a dry path to the water, ensuring the bait remains dry and is dispensed gradually, combined with sound and light stimuli to attract fish.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional baiting methods are used to attract fish, then fish can be attracted to the bait, but the fish are offered too much food at once causing them to stop biting

Engineering Contradiction:
Improvecatch rateVSAvoidamount of food offered at once
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The bait compartment is divided into multiple smaller compartments, each containing a portion of the total bait quantity. This segmentation allows the bait to be released in controlled increments over time, preventing overfeeding while maintaining continuous attraction for fish.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The device releases bait periodically through controlled opening and closing of compartment lids, creating intermittent feeding sessions. This periodic release pattern keeps fish hungry and alert, preventing saturation while maintaining continuous interest in the bait.

Inventive Principle:
Principle #19Periodic action

2Productivity

If live bait is placed directly in water to attract fish, then fish are attracted to the live bait, but the live bait drowns prematurely due to water contact

Engineering Contradiction:
Improvecatch rateVSAvoidsurvival of live bait
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

A dry fall path or crawl path serves as an intermediary structure that allows live bait to transition from the dry compartment to the water without direct water contact. The bait falls through air-filled pathways or crawls along dry surfaces, emerging in the water already positioned and ready, preventing premature drowning while maintaining viability.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The live bait is positioned in the compartment in advance, and the release mechanism is pre-configured to drop the bait into the water through controlled pathways. This preliminary positioning ensures the bait is released in a viable state without being exposed to water conditions that would cause premature death.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If net fishing and long-line fishing are used to catch fish, then large numbers of fish can be caught, but by-catch mortality occurs and the methods are inefficient

Engineering Contradiction:
Improvecatch rateVSAvoidby-catch mortality
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The invention replaces mechanical fishing systems (nets and long-lines) with a biological attraction system using scent and visual bait. Fish are naturally attracted to the device through olfactory and visual stimuli, eliminating the need for mechanical capture methods that cause by-catch mortality and inefficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The device utilizes fish's natural hunting instincts and sensory capabilities to attract and guide fish to the bait automatically. The system leverages the fish's own behavioral patterns and sensory systems rather than requiring external mechanical intervention, creating a sustainable and efficient fishing method.

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

Enhances fish attraction, reduces overfeeding, and allows for high catch rates with minimal by-catch mortality, promoting sustainable fishing practices.

Implementation Method 1

one or more floating compartments (2, 9a) designed to float the device

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Implementation Method 2

the bait compartment (4) is in communicating connection with the fishing water (3) surrounding the device via an opening (5), such that during use of the device the water level (6a inside the bait compartment 4) is substantially equal to the water level (6b outside the device)

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 3

which compartment is provided with an outlet opening which is connected to the fishing water via a dry fall and/or crawl path, all this being designed in such a way that the live bait compartment remains dry

Methodology Applied
Scientific EffectGravity-driven flow control: Gravitation

Data Source

PatentEP4721558A1Device for administering food for attracting fish, etc
Publication Date: 2026.04.08 GERRITSEN HERMAN ERIC
  • EP4721558A1 patent drawingFigure 1
  • EP4721558A1 patent drawingFigure 2
  • EP4721558A1 patent drawingFigure 3

AI summary

Equipment (1) for administering bait in fishing water, comprising a bait compartment (4) for bait (4a), which is in communicating connection with the fishing water (3), so that the bait and the water in the bait compartment form a wet bait mass, which gradually enters the fishing water via an outlet opening (7). The device also comprises a live bait compartment (8) for the maggots (8a) living therein, which is in communication with the fishing water via an outlet opening (8c) and a dry trap and/or creep path (9a,9a').