Selective Spent Casing Capture System with Movable Cover
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Solution Overview
Problem
Existing systems for collecting spent shell casings from firearms are often cumbersome and pose safety risks, particularly when attempting to inspect the ejection port of a loaded rifle.
Innovation Solution
A system comprising a cover with a longitudinal rail and a slider that supports the rail, a bias member to bias the cover towards a second position, a catch to maintain the cover in a first position, and a bag supported by the cover to collect spent casings, which can be easily attached to a firearm and selectively engaged to capture casings without disassembling the recovery system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual collection methods or fixed bags/boxes are used, then shell casings can be collected, but the system requires disassembly to inspect the ejection port, creating safety risks
Solution Approach 1:
The cover is made movable between a first position (covering the ejection port) and a second position (uncovering the ejection port), allowing dynamic access without disassembly. The bias member automatically returns the cover to the first position after manual displacement, maintaining safety while enabling inspection.
Solution Approach 2:
The bias member automatically returns the cover to its closed position after the user manually moves it for inspection, eliminating the need for manual reassembly or complex locking mechanisms. The system self-corrects to its safe state.
2Ease of operation
If the cover is always in the first position to maintain safety, then the ejection port is protected, but the user cannot inspect the chamber
Solution Approach 1:
The cover transitions from a static fixed position to a dynamic movable position, allowing temporary displacement for inspection while automatically returning to the protective first position through the bias member's restoring force.
3Productivity
If previous recovery systems are used, then casings can be collected, but the system complexity increases and safety risks arise from required disassembly
Solution Approach 1:
The cover functions are merged with the collection bag support structure, eliminating the need for separate disassembly mechanisms. The single integrated component performs both protective covering and casing collection functions.
Solution Approach 2:
The cover serves multiple functions: protecting the ejection port when closed, supporting the collection bag, and enabling inspection when manually displaced. This multi-functionality reduces overall system complexity compared to dedicated separate components.
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 system allows for safe and efficient collection of spent shell casings, enabling users to inspect the ejection port without risk of accidentally disassembling the recovery system while the rifle is loaded.
Implementation Method 1
A bias member (e.g., an elastic cord or rubber band) cooperates with the cover and the slider to bias the cover towards the second position
Data Source
AI summary
Systems and methods according to the present invention comprise a selectively engageable system for capturing spent bullet casings. A capture bag may be coupled to a rifle through a cover and slider. The cover holds the bag in place over the rifle ejection port, allowing the user to collect spent bullet casings. The slider allows the user to engage or disengage the system through a tension system.