Windowed Ejection Port Cover for Firearm Inspection
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Solution Overview
Problem
Traditional ejection port covers on firearms are solid, preventing users from visually inspecting the interior of the upper receiver or bolt carrier group when in a closed position.
Innovation Solution
A windowed ejection port cover with transparent or semi-transparent materials and optional magnifying or illuminating elements, allowing users to view the interior of the firearm through apertures and coupling elements for attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a solid ejection port cover is used, then the cover provides complete protection against contaminants, but the user cannot visually inspect the interior of the upper receiver or bolt carrier group
Solution Approach 1:
The ejection port cover transitions from being uniformly solid to having localized transparent or translucent window portions. These window areas provide visual inspection capability while the remaining solid portions of the cover continue to protect against contaminants. This local quality change allows different regions of the same component to serve different functions.
Solution Approach 2:
The ejection port cover incorporates composite construction by combining transparent or translucent materials (such as polycarbonate or acrylic) with opaque protective materials. This composite approach allows the cover to simultaneously provide contaminant protection through the opaque portions and visual inspection capability through the transparent portions.
2Loss of information
If the ejection port cover is made transparent, then visual inspection is enabled, but the protective function against contaminants is reduced
Solution Approach 1:
Rather than making the entire cover transparent, the invention applies transparent or translucent material only to specific window portions where visual inspection is needed. The rest of the cover remains solid and opaque, maintaining full contaminant protection. This localized application resolves the contradiction by providing visibility only where necessary.
Solution Approach 2:
The transparent window portions are designed to provide sufficient visual inspection capability without extending transparency across the entire cover. This partial action approach enables the user to inspect the interior components while minimizing the reduction in protective function by limiting the transparent areas to the minimum necessary for inspection.
3Loss of information
If window elements are added to the ejection port cover, then visual inspection capability is improved, but the device complexity increases
Solution Approach 1:
The ejection port cover is segmented into distinct functional zones: solid protective portions and transparent window portions. The window elements are separate components that can be independently manufactured and installed. This segmentation allows for modular construction, simplifying the overall design by breaking down the complex requirement of providing both protection and visibility into separate, manageable components.
Solution Approach 2:
The window elements act as intermediary components between the solid cover structure and the inspection requirement. Rather than attempting to make the entire cover transparent or complex, the window elements serve as simple mediating structures that provide the necessary visual access while maintaining the simplicity of the overall cover design.
Data Source
AI summary
A windowed ejection port cover having an ejection port cover body; a window aperture formed through the body; a window element, wherein the window element is formed so as to be at least partially received within the window aperture; and a window coupling element utilized to attach or couple at least a portion of the window element within at least a portion of the window aperture.