Firearm Barrel Receiver Connection for Interchangeable Threaded and Unthreaded Barrels
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Solution Overview
Problem
Firearms with unthreaded barrel-receiver connections often experience play or movement between components, leading to reduced shooting accuracy, and users face challenges in interchanging barrels between different firearms or configurations.
Innovation Solution
A firearm design featuring a threaded barrel-receiver connection with a threaded receiver opening and barrel clamp system, allowing for interchangeable use of both threaded and unthreaded barrels, providing improved accuracy and ease of installation without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an unthreaded barrel-receiver connection is used, then the firearm can accept interchangeable barrels easily, but shooting accuracy deteriorates due to play or movement between components
Solution Approach 1:
The receiver is designed with a universal threaded opening that can accommodate both threaded barrels (for improved accuracy) and unthreaded barrels (for interchangeability). The threaded receiver opening serves multiple functions: providing secure engagement for threaded barrels and accepting unthreaded barrels when needed, thus resolving the contradiction between accuracy and versatility.
Solution Approach 2:
A threaded hub is introduced as an intermediary component between the barrel and receiver. This hub provides the threading interface that enables secure engagement, while also being compatible with unthreaded barrels through the threaded receiver opening design. The hub acts as a mediator that allows both threaded and unthreaded barrel configurations to work with the same receiver.
2Manufacturing precision
If a threaded barrel-receiver connection is used, then shooting accuracy improves due to secure engagement, but the device complexity increases with threading requirements
Solution Approach 1:
The threaded receiver opening is designed to serve multiple purposes: accommodating threaded barrels for accuracy, accepting unthreaded barrels for versatility, and working with both hubless and hubbed barrel configurations. This multi-functionality reduces overall system complexity by consolidating multiple connection requirements into a single standardized interface.
3Device complexity
If an unthreaded barrel connection is used, then the firearm structure remains simple, but reliability deteriorates due to component movement and play
Solution Approach 1:
The threaded hub serves as an intermediary that provides reliable threaded engagement between the barrel and receiver. This hub mediates the connection by converting the simple insertion action into a secure threaded engagement, thereby improving reliability without significantly increasing structural complexity.
Solution Approach 2:
The design replaces the unreliable friction-based fit of unthreaded connections with a positive threaded mechanical engagement. This substitution ensures reliable connection stability through the inherent mechanical advantage of threaded fastening, eliminating component movement and play.
Data Source
AI summary
A firearm having a threaded barrel-receiver connection, with a threaded receiver opening for cooperative engagement with a threaded barrel. The receiver is also compatible with a clamping system for engagement of an unthreaded barrel, so that threaded and unthreaded barrels may be used interchangeably. The threads of the receiver may have a flat crested thread profile for sliding engagement upon installation of an unthreaded barrel.