Offset Broadhead Blades Create Z-Shaped Penetration Path
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Solution Overview
Problem
Traditional archery broadheads face issues with effective penetration, accuracy, durability, and manufacturing complexity, particularly when encountering heavy bones or large animals, as they often fail to create a sufficient cutting path and may break apart upon impact, leading to reduced effectiveness and increased costs.
Innovation Solution
The archery broadhead system features offset primary blades and a central bleeder blade, creating a "Z" shaped penetration path with unidirectional edge bevels that induce torsional force upon impact, enhancing wound opening and bone fracture, while also being designed for accurate flight and easy manufacturing through various material configurations such as single folded blades or multiple replaceable blades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a broadhead becomes wider to create a larger cutting path, then the likelihood of intercepting vital structures increases, but the surface area steers the arrow and reduces accuracy
Solution Approach 1:
The broadhead is divided into multiple blades (primary blades and bleeder blades) that are offset from the central axis, creating a segmented cutting path that achieves wide coverage without increasing the overall arrow profile area
Solution Approach 2:
The blades are arranged in three-dimensional offset positions rather than a simple two-dimensional expansion, creating a Z-shaped cutting path that provides wide coverage while maintaining a compact arrow profile
2Adaptability or versatility
If replaceable blades are used to create off-plane cutting paths, then the ability to intercept vital structures improves, but durability upon bone impact deteriorates
Solution Approach 1:
The broadhead is divided into multiple blades (primary blades and bleeder blades) that are offset from the central axis, creating a segmented cutting path that achieves wide coverage without increasing the overall arrow profile area
Solution Approach 2:
The broadhead combines multiple blade components with a ferrule structure, creating a composite system where the ferrule provides durability and bone impact resistance while the offset blades provide cutting effectiveness
3Area of stationary object
If mechanical broadheads with retractable blades are used to achieve wide cutting width, then the cutting path area increases, but manufacturing complexity and cost increase
Solution Approach 1:
The broadhead is divided into multiple blades (primary blades and bleeder blades) that are offset from the central axis, creating a segmented cutting path that achieves wide coverage without increasing the overall arrow profile area
Solution Approach 2:
Instead of using mechanical retractable blades that extend upon impact, the design uses fixed offset blades that are already positioned to create the desired cutting path, inverting the approach to achieve wide cutting width without mechanical complexity
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
This configuration optimizes bleeding and increases the likelihood of lethal strikes by creating a large, irregular wound opening and enhancing bone penetration, while maintaining arrow accuracy and reducing manufacturing complexity and costs.
Implementation Method 1
when the primary blades are sharpen with a unidirectional bevel that opens, or is slanted, to the outside, the bevel will create a torsional force when the broadhead strikes a viscous target, such as the body cavity of a large animal, the torsional force causes the broadhead rotate within the target
Implementation Method 2
primary blades that are offset from the central axis of the arrow and a central bleeder blade that intersects with the base portion of the primary blades. This configuration creates maximum wound size with a reduced in-flight profile
Data Source
AI summary
The present invention relates to an archery broadhead system or more specifically to an archery broadhead having primary blades that are axially offset from the central axis of the arrow and having cutting paths that are connected by a central bleeder blade. The archery broadhead of the present invention creating a “Z” shaped penetration.