Concave Archery Arm Guard With Low-Friction PTFE Panel
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Solution Overview
Problem
Existing archery arm guards fail to completely protect the arm from string strikes, leading to injuries and affect arrow flight accuracy due to their design and material limitations, causing friction and string damage.
Innovation Solution
A concave-shaped arm guard made from low-friction materials like PTFE, with a thin and flexible design that conforms to the arm, and integrated retaining straps to guide the bowstring onto the guard, minimizing arm strikes and arrow flight inconsistencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional arm guard materials and designs are used, then arm protection is provided, but arrow flight accuracy is affected due to string movement and harmonics
Solution Approach 1:
The patent changes the material parameter from traditional high-friction materials to low-friction materials (such as PTFE), which reduces the interaction between the string and arm guard, thereby maintaining arrow flight accuracy while still providing arm protection
Solution Approach 2:
The patent employs a concave arcuate shape at the posterior edge of the arm guard panel, which guides the string away from the arm while allowing the string to pass over the curved surface, reducing abrupt stops and harmonics that would affect arrow flight
2Manufacturing precision
If arm guard material friction is reduced, then arrow flight accuracy is maintained, but arm protection effectiveness may be compromised
Solution Approach 1:
The patent uses composite construction combining a flexible substrate material with a low-friction coating layer (such as PTFE), which provides both the structural integrity needed for arm protection and the low-friction surface needed to maintain arrow flight accuracy
Solution Approach 2:
The patent optimizes the thickness parameter of the arm guard panel to be between 0.0005 inches and 0.5 inches, balancing sufficient material mass for protection with minimal interference to string motion and arrow flight
3Object-affected harmful factors
If arm guard thickness is increased, then arm protection is enhanced, but string movement and harmonics are more severely affected
Solution Approach 1:
The patent optimizes the thickness parameter of the arm guard panel to be between 0.0005 inches and 0.5 inches, balancing sufficient material mass for protection with minimal interference to string motion and arrow flight
Solution Approach 2:
The concave arcuate shape at the posterior edge guides the string smoothly over the curved surface, reducing abrupt stops and harmonics even when the panel has adequate thickness for protection
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 solution effectively reduces arm trauma, maintains arrow accuracy, and prolongs string lifespan by minimizing friction and conforming to the arm's shape, ensuring consistent and precise arrow flight.
Implementation Method 1
the panel is constructed from a low-friction flexible material
Data Source
AI summary
An archery arm guard system for protecting an arm of an archer features a panel. A panel posterior edge features a concave arcuate shape. The panel is constructed from a low-friction flexible material. The system features a first aperture, a second aperture, a third aperture, and a fourth aperture. The system features a first retaining strap and a second retaining strap with a first strap first component located in the first aperture and a first strap second component located in the second aperture. A second strap first component is located in the third aperture and a second strap second component is located in the fourth aperture.