Configurable Firearm Brass Catcher With One-Hand Attachment
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Solution Overview
Problem
Conventional firearm brass catchers are bulky, difficult to use, and require extensive mounting hardware, posing hazards and environmental concerns with spent brass ejection.
Innovation Solution
A firearm shell casing catching system that can be attached and detached with one hand, securely fits to the firearm without screws or fasteners, and includes a detachable hopper that collects spent casings, featuring a mounting assembly with a deflectable side wall and a casing deflector to guide casings into the hopper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional brass catchers are used to collect spent casings, then spent brass collection is achieved, but the device becomes bulky and requires extensive mounting hardware
Solution Approach 1:
The brass catcher is divided into a main body and a separate mounting assembly. The mounting assembly includes a mounting bracket and mounting tabs that can be independently attached to the firearm, allowing the catcher to be mounted without complex hardware. The segmentation enables simple attachment while maintaining collection functionality.
Solution Approach 2:
The mounting assembly uses self-service attachment mechanisms where the mounting tabs engage with the firearm's magazine well and are secured using simple set screws. The device mounts and detaches without requiring extensive external hardware or complex assembly procedures, reducing overall device complexity.
2Reliability
If conventional brass catchers are used to collect spent casings, then spent brass collection is achieved, but the device becomes difficult to use and attach
Solution Approach 1:
The mounting assembly is segmented into a mounting bracket and mounting tabs that can be independently positioned and attached. This segmentation allows the user to attach the brass catcher in a straightforward sequence, improving ease of operation while maintaining collection reliability.
Solution Approach 2:
The mounting tabs are designed with adjustable parameters including tab length and bracket dimensions that can be modified to fit different firearm configurations. This adjustability simplifies the attachment process across various firearm types while ensuring reliable spent brass collection.
3Reliability
If a mounting assembly with deflectable side wall is used, then secure fit to firearm is achieved, but device complexity increases
Solution Approach 1:
The mounting assembly incorporates a deflectable side wall that can flex during attachment and detachment operations. This dynamic element allows the assembly to adapt to slight variations in firearm dimensions while maintaining a secure fit, without requiring a complex adjustable mechanism.
Solution Approach 2:
The side wall is designed as a thin, flexible component that can deflect to accommodate mounting variations. This flexible element provides secure attachment while keeping the overall assembly structure simple, avoiding the need for complex fastening systems.
4Productivity
If a casing deflector is added to guide casings into the hopper, then collection efficiency is improved, but device complexity increases
Solution Approach 1:
The casing deflector uses a curved surface to guide spent casings from the ejection port into the hopper. This curved geometry efficiently directs casings along a natural trajectory without requiring complex mechanical guides or multiple components, maintaining simple internal structure while improving collection efficiency.
Solution Approach 2:
The casing deflector acts as an intermediary element between the ejection port and the hopper. It mediates the transition of casings from the firing chamber to the collection container, improving collection efficiency while adding only a single simple component to the internal structure.
Data Source
AI summary
A firearm shell casing catching system for collecting casings ejected from a firearm includes a mounting assembly, casing deflector, and a hopper. A shim can be optionally attached to the mounting assembly thereby decreasing the inside dimension of the mounting assembly to allow for the firearm shell casing catching system to be attached to magwells of firearms having different sizes.