Modular Firearm Trigger Assembly With Oversized Pin Apertures
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Solution Overview
Problem
Firearms with standard trigger assemblies and receivers are incompatible due to unique design features, such as integral notches and shorter pivot pins, which restrict compatibility and require specialized tools for assembly and disassembly.
Innovation Solution
A modular receiver system with a trigger assembly that includes a rotatable safety selector with spring-loaded detent assemblies and adjustable trigger pull force, allowing for compatibility with various firearm configurations and tool-free assembly/disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standard trigger assemblies are used in firearms with unique design features, then compatibility is improved, but the unique integral notches and shorter pivot pins make standard assemblies incompatible
Solution Approach 1:
The trigger assembly is designed with universal compatibility features by incorporating standard pivot pin holes that align with conventional firearm receivers, while the integral notches are positioned to accommodate various receiver designs. This allows a single trigger assembly design to function across multiple firearm platforms without requiring modification.
2Strength
If specialized tools are required for assembly and disassembly, then structural integrity is improved, but ease of operation deteriorates
Solution Approach 1:
The trigger assembly incorporates self-aligning features where the integral notches automatically guide the assembly into proper alignment with the receiver during installation. The pivot pins are designed with tapered ends that self-center in the receiver holes, eliminating the need for specialized alignment tools while maintaining secure structural connection.
3Ease of manufacture
If a fixed safety selector design is used, then manufacturing simplicity is improved, but adaptability to different firearm configurations deteriorates
Solution Approach 1:
The safety selector is designed as a rotatable component with a range of motion that allows it to engage with different receiver configurations. The selector features a cam surface that can accommodate varying receiver geometries, enabling a single design to adapt to multiple firearm types without requiring separate safety selector components for each configuration.
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
Enables interchangeable frames and ammunition types, ensuring compatibility and ease of use across different firearm platforms while maintaining safety and adjustability.
Implementation Method 1
having two safety selector with spring loaded detent assemblies adapted to engage the safety selector in a stable rotational position and prevent unintentional 'release' of the safety selector
Data Source
AI summary
A firearm comprising a frame defining a trigger assembly receptacle between opposed sidewalls. A trigger assembly received in the trigger assembly receptacle and including pivot pins, with the sidewalls defining pin apertures adapted to receive pivot pins. The pin apertures being oversized with respect to standard pin apertures. The trigger assembly having a pivoting safety selector and having a safety selector detent adapted to engage the safety selector in a stable rotational position. The sidewalls defining a safety selector aperture adapted to receive the safety selector. The safety selector aperture being oversized with respect to standard safety selector apertures, such that the frame is incompatible with standard trigger assemblies.