Magnetic Feeder Closure for Selective Wild Pig Access
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Solution Overview
Problem
Invasive wild pigs are causing extensive damage, and existing feeders fail to selectively limit access to non-target species like white-tailed deer and birds, while dominance issues in group feeding behaviors reduce the effectiveness of feeding wild pigs.
Innovation Solution
A feeder with a pivotable closure that can be urged by target animals to open, offering sufficient resistance to prevent non-target animals from accessing the bait, utilizing magnetic interengagement, bistable mechanisms, and adjustable locking systems to ensure exclusive access by wild pigs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the closure offers high resistance to prevent non-target animals from accessing bait, then selectivity is improved, but it becomes difficult for target animals (wild pigs) to open the feeder
Solution Approach 1:
The magnetic engagement force is carefully calibrated to fall within a specific range that non-target animals cannot overcome, yet target animals (wild pigs) can easily exceed due to their superior strength. This parameter optimization resolves the contradiction by making the same closure mechanism both highly selective and easily operable by the intended target.
Solution Approach 2:
The magnetic closure acts as an intermediary mechanism that mediates between the need for high security (preventing non-target access) and ease of operation (allowing target access). The magnetic field serves as the mediating force that can be tuned to respond differently to animals of varying strengths, simultaneously achieving both selectivity and accessibility.
2Ease of operation
If the closure is designed to be easily opened by wild pigs, then accessibility is improved, but non-target animals may also access the bait
Solution Approach 1:
By adjusting the magnetic engagement parameters to a specific force range, the closure becomes easily operable for strong target animals while maintaining high resistance against weaker non-target animals. This parameter tuning ensures that accessibility and selectivity are both optimized simultaneously.
Solution Approach 2:
The magnetic closure provides dynamic resistance that adapts to the strength of the animal attempting to open it. For target animals with sufficient strength, the closure opens easily; for non-target animals with insufficient strength, the magnetic force maintains secure engagement. This dynamic response resolves the contradiction between accessibility and selectivity.
3Device complexity
If a simple closure mechanism is used, then device complexity is reduced, but it cannot provide sufficient resistance to prevent non-target species access
Solution Approach 1:
The patent replaces complex mechanical locking mechanisms with a magnetic engagement system. This substitution maintains structural simplicity while achieving superior selectivity, as the magnetic force can be precisely calibrated to respond to the strength characteristics of different animal species without requiring complex mechanical components.
Solution Approach 2:
Instead of increasing mechanical complexity, the solution changes the physical parameter of magnetic engagement force to achieve the desired selectivity. This parameter-based approach maintains device simplicity while providing reliable prevention of non-target access.
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 feeder effectively limits access to non-target species and addresses dominance issues in wild pigs, allowing multiple pigs to feed simultaneously while ensuring that only wild pigs can open the feeder, thereby controlling the spread of invasive wild pigs.
Implementation Method 1
The apparatus may be configured such that the trough and closure interengage magnetically, whereby the closure offers said resistance, when the closure is in the closed position. One of the trough and closure may comprise at least one magnetic portion and the other of the trough and closure may comprise at least one magnetically engageable portion
Data Source
AI summary
An apparatus for baiting and/or feeding target animals comprises: a trough to contain bait and/or feed; and a closure which can be urged by at least one said target animal so as to move from a closed position, in which it precludes access to the bait and/or feed by the target animal(s), to an open position, which is such that said access is enabled, the apparatus being configured such that the closure offers a resistance to being moved which is sufficient that it cannot be urged by another animal to move from the closed position to the open position.