Firearm Barrel Bushing Bias Assembly Debris Management
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Solution Overview
Problem
Firearms with moving slides and barrels are prone to jamming due to dust, dirt, and foreign matter, which existing solutions address only after the issue arises, increasing complexity and time for disassembly and cleaning.
Innovation Solution
A barrel bushing assembly with a retaining channel and bias assembly that accommodates variances in barrel diameter, providing discrete contact points and interstitial voids to compress and dislodge foreign debris, reducing jamming and maintaining operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a traditional barrel bushing is used, then the firearm can be assembled and disassembled easily, but foreign matter accumulates causing jamming and reducing operational duration
Solution Approach 1:
The bias assembly creates an interstitial void structure between the barrel and bushing that allows foreign matter to be trapped and compressed rather than allowing continuous accumulation. The discrete contact points separated by voids create a porous-like filtering effect that prevents jamming while maintaining structural integrity.
Solution Approach 2:
The bias assembly compresses foreign matter that enters the bushing interface, converting the harmful effect of foreign matter accumulation into a beneficial compression action that prevents jamming. The interstitial voids allow the bias assembly to compress debris rather than allowing it to build up and cause failure.
2Reliability
If the bushing structure is made more complex to accommodate foreign matter, then jamming is reduced, but disassembly and cleaning time increases
Solution Approach 1:
The bias assembly divides the contact interface into discrete contact points separated by interstitial voids. This segmentation allows foreign matter to be trapped in specific voids rather than throughout the entire interface, making it easier to access and remove during cleaning while maintaining reliability during operation.
Solution Approach 2:
The bias assembly acts as an intermediary element between the barrel and bushing, creating a controlled interface that manages foreign matter. This intermediary structure allows simple disassembly and reassembly while providing complex functionality during operation by compressing and managing debris in the interstitial voids.
3Adaptability or versatility
If discrete contact points are used to accommodate barrel diameter variance, then adaptability increases, but the structure becomes more complex
Solution Approach 1:
The bias assembly changes the physical parameters of the interface by creating discrete contact points with specific spacing and geometry. This allows the bushing to accommodate variations in barrel diameter through the geometric arrangement of contact points rather than through complex adjustable mechanisms, maintaining simplicity while providing 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 solution extends the duration of firearm operability by reducing foreign matter accumulation and jamming, while maintaining simplicity and efficiency in disassembly and cleaning processes.
Implementation Method 1
the discrete contact points of the bias assembly extend from retaining channel a sufficient distance to accommodate variances in an outside diameter of the gun barrel and the discrete contact points of the bias assembly extend from retaining channel a sufficient distance to accommodate variances in an outside diameter of the gun barrel, so as to be partially compressed by an outside surface of the barrel
Data Source
AI summary
A barrel bushing and retained bias assembly are provided for engaging a barrel of a firearm to accommodate relative longitudinal movement of the barrel bushing and the barrel. The barrel bushing includes a retaining channel for retaining the bias assembly, such that a portion of the bias assembly extends into a bore of the barrel bushing to contact and be partly compressed by the outside diameter of the barrel.