Duckbill Shotgun Muzzle Attachment with Reinforced Webbing
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Solution Overview
Problem
Duckbill chokes used for shotguns have reliability and durability issues, leading to catastrophic failures due to their inability to effectively manage the forces exerted by the muzzle blast and pellet flight.
Innovation Solution
A muzzle attachment with a central axis and through bore, featuring opposing extensions with a gap and webbing for strength, and teeth for breaching and vent holes for gas redirection, designed to enhance the shotgun's performance by reducing the risk of failure and improving pellet distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional duckbill chokes are used to form an elongated shot pattern, then the shotgun's versatility and pattern control are improved, but the reliability and durability deteriorate due to catastrophic failures from inability to manage muzzle blast forces
Solution Approach 1:
The attachment is divided into multiple functional segments: a cylindrical body portion for mounting, a duckbill portion with opposing extensions for pattern control, and a reinforcement portion with webbing for structural strength. This segmentation allows each part to perform its specific function optimally while distributing stress across multiple components.
Solution Approach 2:
The attachment combines different structural elements (cylindrical body, duckbill extensions, webbing reinforcement) that work together as a composite system. The webbing provides tensile strength while the extensions provide pattern control, creating a composite structure that achieves both reliability and versatility.
2Manufacturing precision
If the gap between opposing extensions is made narrow to improve pattern control, then the shot pattern precision is improved, but the structural strength and resistance to muzzle blast forces deteriorates
Solution Approach 1:
The webbing is strategically positioned at the narrow end of the gap where structural strength is most needed to withstand muzzle blast forces. The webbing's radial thickness provides localized reinforcement without affecting the overall gap dimensions that control the shot pattern. This allows the gap to remain narrow for precision while the webbing provides the necessary strength.
3Reliability
If the webbing radial thickness is increased to improve structural strength, then the durability is improved, but the pellet flight path restriction and pattern control deteriorates
Solution Approach 1:
The webbing is positioned specifically at the narrow end of the gap where structural reinforcement is most critical for withstanding muzzle blast forces. By concentrating the webbing's thickness at this location rather than uniformly throughout, the design provides maximum strength where needed while minimizing interference with pellet flight paths in other areas.
Solution Approach 2:
The webbing provides more structural strength than the minimum required, creating a conservative design that ensures durability. The excessive reinforcement at the narrow end compensates for the stress concentration in this critical area without significantly impacting pellet flight, as the webbing's position and gradual taper minimize flow restriction.
4Object-affected harmful factors
If vent holes are added to redirect gas flow to improve safety, then the user safety is improved, but the device complexity increases
Solution Approach 1:
Vent holes are incorporated into the cylindrical body portion to extract and redirect harmful gas flow away from the user. This extraction of the gas management function into separate vent openings simplifies the overall design compared to more complex gas redirection systems, while still achieving the safety benefit.
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 attachment enhances the shotgun's reliability by absorbing muzzle forces, reducing the risk of catastrophic failures, and producing a consistent elongated shot pattern while allowing proper gas venting, thereby improving user safety and operational effectiveness.
Implementation Method 1
each webbing has an inner surface, an outer surface, and a radial thickness which tapers from the narrow end to the wide end
Implementation Method 2
at least one vent hole positioned on the surface of either the first portion of the second portion
Data Source
AI summary
A muzzle attachment for a shotgun is disclosed including a first portion that has a first end, a second end, a central axis extending from the first end to the second end, and a through bore extending from the first end to the second end, concentric about the axis. The muzzle attachment also includes a second portion having a pair of opposing extensions defining a gap therebetween. Each extension has a base adjacent the second end of the first portion and a distal end extending away from the base. Additionally, the gap has a narrow end adjacent the base, a wide end adjacent to the distal end, and a pair of opposing lateral sides extending along a projection of the axis. Each of the sides includes a webbing disposed at the narrow end; wherein each webbing has an inner surface, an outer surface, and a radial thickness which tapers from the narrow end to the wide end.