Firearm Recoil Buffer With Fill Material And Snap-Fit Closure
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Solution Overview
Problem
Traditional recoil buffers in AR-pattern firearms are complex to assemble, prone to disassembly issues, and costly to manufacture, with limited flexibility in weight adjustment.
Innovation Solution
A recoil buffer design featuring a tubular body with an inset notch and a closure member with a pawl portion for secure attachment, using fill material to adjust weight, and a snap-fit closure mechanism for easy assembly and permanence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional recoil buffers use multiple component parts (tubular body, plug, cross pin, internal weights), then the buffer can provide standardized weight options, but the assembly process becomes complex and the buffer may come apart when unintended
Solution Approach 1:
The patent combines multiple traditional components (tubular body, plug, cross pin, and internal weights) into a single integrated buffer assembly. The closure member is press-fit directly into the tubular body without requiring separate fastening hardware, eliminating the complexity of multiple parts while maintaining assembly integrity through the interference fit of the press-fit connection.
2Reliability
If traditional recoil buffers use removable engagement methods (roll pin or threaded engagement), then the buffer can be disassembled for weight adjustment, but the engagement may come apart when unintended
Solution Approach 1:
The buffer is pre-assembled with the closure member permanently secured to the tubular body through press-fit engagement during manufacturing. This preliminary action ensures that the buffer arrives at the customer ready-to-use with stable engagement, eliminating the risk of unintended disassembly while maintaining the ability to adjust weight by replacing the entire buffer unit with different pre-configured weights.
3Strength
If traditional recoil buffers are constructed from multiple metal components, then the buffer can provide structural strength, but the manufacturing cost increases
Solution Approach 1:
The patent employs a composite construction where the tubular body is made from a softer material (such as aluminum or polymer) and the closure member is made from a harder material. This composite approach allows the softer tubular body to be easily formed and the harder closure member to provide the necessary structural strength and durability, while the press-fit connection between dissimilar materials creates a strong, permanent bond that reduces manufacturing complexity and cost.
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 simplifies assembly, reduces manufacturing costs, and allows for precise weight adjustment, enhancing the buffer's functionality and reliability while minimizing the risk of improper disassembly.
Implementation Method 1
A closure member having an attachment portion is provided. The attachment portion may have a pawl portion configured to connectably engage the inset notch when the closure member is assembled by pressing into the tubular body
Data Source
AI summary
A firearm recoil buffer having a tubular body with a closed end, an open end, and an interior surface including an inset notch adjacent the open end. Fill material is provided in the tubular body to add a preselected amount of weight. A closure member has an attachment portion with a pawl portion that connectably engages the inset notch when the closure member is assembled by pressing into the tubular body.