Broadhead With Deployable Blades For Expanded Cutting Area
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing broadhead arrowheads do not provide a large enough cutting area to ensure quick and humane death of prey, as they often rely on fixed or limited deployable blades that may not effectively expand upon impact.
Innovation Solution
A broadhead design featuring multiple deployable blades, including forward and rearward blades that pivot from a retracted to an extended position, providing increased cutting area by extending in multiple planes and utilizing levers and bands for deployment upon impact, enhancing the arrow's cutting capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If fixed-blade broadhead design is used, then structural simplicity is maintained, but cutting area is insufficient to ensure quick and humane death of prey
Solution Approach 1:
The broadhead is divided into multiple independent blade segments (forward blades and rearward blades) that can move independently relative to the body. Each blade is a separate component that can deploy individually, allowing the cutting area to expand significantly while maintaining manageable structural complexity through modular design
Solution Approach 2:
The broadhead transitions from a static fixed-blade design to a dynamic deployable design where blades can change position from retracted to extended states. This dynamic capability allows the cutting area to adapt - remaining compact during flight and expanding upon impact with prey to maximize cutting effectiveness
2Area of moving object
If deployable blades are added to increase cutting area, then cutting capability is improved, but device complexity increases
Solution Approach 1:
Multiple blade deployment mechanisms are merged into a single integrated system where forward blades and rearward blades share common structural elements and deployment triggers. The body serves as a unified structure that houses both blade sets, and a single impact event can trigger deployment of all blades simultaneously, reducing overall system complexity despite having multiple moving parts
Solution Approach 2:
The body structure serves multiple functions: it acts as the mounting platform for both forward and rearward blades, provides the reference frame for blade deployment, and functions as the cutting element itself when blades are retracted. This multi-functionality reduces the need for additional separate components, managing device complexity while achieving large cutting area
3Area of moving object
If multiple deployable blades are used, then cutting area and wound profile are significantly increased, but arrow stability during flight may be affected
Solution Approach 1:
The broadhead employs a dynamic configuration where blades remain retracted during flight to maintain a compact, aerodynamic profile that ensures arrow stability. Upon impact with prey, the blades dynamically deploy to their extended positions, transforming the structure from a stable flight configuration to a high-cutting-area impact configuration. This temporal separation of flight and cutting functions resolves the stability contradiction
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 design significantly increases the cutting area upon impact, facilitating quicker and more humane killing of prey by expanding the wound profile, with the blades deploying in a scissor-like manner to create a larger exit wound and improve penetration efficiency.
Implementation Method 1
utilizing levers and bands for deployment upon impact
Implementation Method 2
the band is constructed of an elastic material
Data Source
AI summary
A broadhead, comprising an elongated body defining a longitudinal axis and having a forward portion, a tip portion, and a rearward portion spaced from the forward portion. At least one forward blade is connected to the forward portion and configured for movement relative to the elongated body between a retracted position generally adjacent the elongated body to an extended position extending outwardly from the elongated body. And, at least one rearward blade connected to the rearward portion and configured for movement relative to the elongated body between a retracted position generally adjacent the elongated body to an extended position extending outwardly from the elongated body.