Lateral Slide Feed Tray for Belt-Fed Weapon Optic Interference
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Solution Overview
Problem
Belt-fed weapons with advanced optics face interference issues between the feed tray and rail-mounted optics, and potential loss of optic zero during maintenance, as conventional designs require removal of optics for feed tray access, disrupting established sight settings.
Innovation Solution
A sliding sideways installation configuration for the belt feed tray assembly allows for removal and field stripping without disturbing rail-mounted optics, using vertical takedown pins and tracks to constrain the feed tray in all degrees of freedom, enabling maintenance without re-sighting the scope.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the feed tray assembly is removed from a hinged joint in conventional belt-fed weapons, then the feed tray can be accessed for loading and clearing rounds, but any optics mounted on the top rail are also removed, interfering with the established zero for the optics
Solution Approach 1:
The feed tray assembly is segmented from the optic mounting system. The feed tray is mounted on the left side of the weapon body while optics are mounted on the top rail, creating spatial separation that allows independent access to each component without affecting the other.
Solution Approach 2:
The feed tray access is moved from the vertical dimension (top rail area) to the lateral dimension (left side insertion). This dimensional change allows feed tray operations to occur in a different spatial plane, eliminating interference with optics mounted on the top rail.
2Volume of moving object
If the feed tray assembly is mounted in Cased Telescoped configuration requiring vertical removal, then the weapon structure is compact, but optics interfere with the removal of the feed tray assembly
Solution Approach 1:
The feed tray insertion/removal direction is changed from vertical (conflicting with optic removal path) to lateral (insertion from left side). This dimensional change eliminates the interference zone between feed tray operations and optic mounting while preserving the compact Cased Telescoped configuration.
3Productivity
If the feed tray assembly is accessed by removing it from the top rail area, then loading and clearing operations can be performed, but the operation becomes complex and time-consuming
Solution Approach 1:
The feed tray assembly is designed as a separate, independently accessible module mounted on the left side of the weapon body. This segmentation allows the feed tray to be accessed and operated independently from the main weapon assembly and optic system, simplifying the loading and clearing procedure.
Solution Approach 2:
The feed tray assembly incorporates self-contained loading and clearing mechanisms that can be operated independently without requiring disassembly of the weapon or removal of optics. The lateral insertion design provides direct access to the feed tray cavity for rapid ammunition replenishment.
Data Source
AI summary
A belt-fed weapon includes an upper part defining a feed tray cavity, and a feed tray in the feed tray cavity, wherein the feed tray and feed-tray cavity are co-configured for lateral sliding insertion and removal of the feed tray to and from an installed position in the feed tray cavity. The arrangement enables insertion and removal of the feed tray without interference with an installed scope or similar optic, enabling maintenance or field stripping without requiring removal or re-sighting of the scope.