Magnetic Drop-Away Arrow Rest for Archery Bows
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Solution Overview
Problem
Conventional arrow rests in archery bows often experience mechanical failures due to wear and friction, leading to inconsistent operation and reduced accuracy, as they rely on mechanical structures like springs and cords that can fail over time.
Innovation Solution
A programmable magnet-based arrow rest that uses coded magnets with individual polarities and strengths to selectively move the arrow support arm to predetermined positions, reducing the number of structural moving parts and wear, and ensuring consistent operation by adjusting the spatial orientation of magnetic elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional mechanical structures (springs and cords) are used to actuate the arrow rest, then the rest can be moved between positions, but the structures experience wear and friction leading to inconsistent operation
Solution Approach 1:
The patent replaces mechanical actuation systems (springs and cords) with a magnetic field-based system. Coded magnets with specific polarity patterns generate magnetic forces that act on magnetically actuated elements to move the arrow rest between positions, eliminating mechanical contact and friction.
Solution Approach 2:
The patent uses coded magnets with varying polarity patterns (North-South arrangements) to create different magnetic field profiles. By changing the magnetic field parameters through different code patterns, the system can reliably actuate the arrow rest without mechanical wear.
2Measurement precision
If coded magnets with multiple maxels are used to precisely position the arrow rest, then positioning accuracy improves, but the device complexity increases
Solution Approach 1:
The coded magnet is divided into multiple maxels (magnetic elements) with individual polarities. Each mixel contributes to the overall magnetic field profile, allowing precise control of the magnetic force distribution to achieve accurate positioning of the arrow rest.
Solution Approach 2:
The patent introduces magnetically actuated elements as intermediaries between the coded magnets and the arrow rest. These elements respond to the magnetic field patterns and translate the magnetic forces into precise mechanical positioning, simplifying the direct connection while maintaining accuracy.
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 magnetically actuated arrow rest provides a consistently functioning, highly tunable, and wear-resistant mechanism for efficiently moving the arrow support arm between rest and support positions, enhancing the accuracy and reliability of arrow launch.
Implementation Method 1
These maxels cooperatively emit a first magnetic field profile that exerts a predetermined force, for example, a predetermined magnetic force, from the first magnetic element
Implementation Method 2
The coded magnet includes a fixed plurality of maxels having individual polarities and strengths. These maxels cooperatively emit a first magnetic field profile that exerts a predetermined force
Data Source
AI summary
A drop away arrow rest includes programmable or coded magnets that selectively move an arrow support arm to predetermined positions, such as a support position to hold an arrow, or a rest position to move out of the way of an arrow as it is launched from an archery bow.