Variable Cutting Diameter Arrowhead with Dynamic Blade Deployment
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Solution Overview
Problem
Existing arrowheads for hunting medium or large game animals often have fixed blades with a large cutting diameter, which may not efficiently adapt to varying target densities, such as bone, leading to inconsistent wound creation and ethical concerns.
Innovation Solution
The arrowhead design features a ferrule with pivotally attached blades that can transition from a stowed position to a deployed position, utilizing a resilient member and blade locking mechanism to adjust the cutting diameter dynamically, ensuring efficient penetration and wound creation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large cutting diameter is used to create large wounds for hunting medium or large game animals, then the effectiveness of killing the animal is improved, but the adaptability to varying target densities such as bone is worsened
Solution Approach 1:
The arrowhead employs movable blades that can transition between a stowed position (smaller cutting diameter) and a deployed position (larger cutting diameter). This dynamic configuration allows the cutting diameter to adapt to different target densities, resolving the contradiction between creating large wounds for effectiveness and adapting to varying target characteristics.
Solution Approach 2:
The cutting diameter parameter is made variable through the deployment mechanism. By changing the spatial configuration of the blades from stowed to deployed, the cutting diameter changes accordingly, enabling the arrowhead to optimize its performance for different hunting scenarios and target densities.
2Reliability
If fixed blades with large cutting diameter are used, then large wounds are created for ethical killing, but the consistency of wound creation across varying target densities is worsened
Solution Approach 1:
The dynamic blade deployment system allows the cutting diameter to be optimized for each specific hunt. The blades can be deployed to create consistent large wounds regardless of target density, improving both ethical killing and wound creation consistency compared to fixed blade designs.
3Adaptability or versatility
If mechanical broadhead arrowhead with movable blades is used to provide larger cutting diameter, then the adaptability to target density is improved, but the device complexity is worsened
Solution Approach 1:
The arrowhead is segmented into modular components including the ferrule, multiple blades, resilient members, and blade locking members. This segmentation allows each component to perform its specific function independently, simplifying the overall mechanism while maintaining adaptability to different target densities.
Solution Approach 2:
The resilient members automatically deploy the blades upon impact with the target, eliminating the need for complex external triggering mechanisms. The blade locking members engage with the ferrule to secure the deployed position, creating a self-regulating system that reduces overall device complexity while maintaining adaptability.
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 dynamic cutting diameter adjustment allows for consistent and rapid deployment of the blades, improving the efficiency of the arrowhead by ensuring effective penetration through varying target densities while minimizing the risk of blade damage.
Implementation Method 1
a resilient member and a blade locking member located within the ferrule cavity, wherein the blade locking member is connected to an upper portion the resilient member
Data Source
AI summary
A variable cutting diameter arrowhead includes a first blade, a second blade, and a ferrule, where the first blade and the second blade have a stowed position and a deployed position. The first blade and the second blade may be pivotally attached to the ferrule. In addition, a resilient member may be within a ferrule cavity, where the resilient member applies a force to a blade locking member that engages the first blade and the second blade to retain the blades in a stowed position. When the blades are in a deployed position, the distance between a distal end of the first blade and an outer surface of the ferrule is greater than the distance between the distal end of the first blade and the outer surface of the ferrule is in the stowed position.