Lower Receiver Ejector Arm for Consistent Firearm Ejection
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Solution Overview
Problem
Existing firearms lack a reliable and consistent ejection mechanism integrated into the lower receiver, which affects the reliability and consistency of cartridge or cartridge case expulsion.
Innovation Solution
A bolt lever with an ejector arm integrated into the lower receiver, allowing the ejector arm to interface with the bolt carrier group to propel cartridges or cartridge cases out of the firearm during the bolt's rearward movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ejector mechanism is integrated into the lower receiver, then the reliability and consistency of ejection is improved, but the device complexity increases
Solution Approach 1:
The ejector arm is integrated directly into the lower receiver as a unified structure, eliminating the need for separate ejector components. This merging of the ejector function into the lower receiver body simplifies the overall system while improving reliability through reduced part count and fewer potential failure points.
Solution Approach 2:
The lower receiver is designed to serve multiple functions: it houses the trigger mechanism, supports the pistol grip, and integrates the ejector arm. This multi-functionality reduces the need for separate dedicated ejector components, simplifying the overall firearm structure while maintaining reliable ejection functionality.
2Reliability
If the ejector mechanism is integrated into the lower receiver, then the consistency of ejection pattern is improved, but the manufacturing precision requirements increase
Solution Approach 1:
By integrating the ejector arm as an integral part of the lower receiver rather than a separate component, the patent eliminates alignment issues between separate parts. This unified structure ensures consistent ejection patterns while reducing the need for high-precision assembly between multiple components.
Solution Approach 2:
The ejector arm is positioned at a specific location on the lower receiver where it can effectively engage the cartridge case. The local structural design at this integration point optimizes the ejection function while maintaining overall manufacturing feasibility through standardized production methods.
Data Source
AI summary
A bolt lever for a firearm includes a main body, a hole extending at least partially through the main body, and an ejector arm that extends in a forward direction from the main body. The ejector arm may be designed to interface with a corresponding groove in a bolt carrier group.