Threaded Barrel with Hidden Threads for Firearm Attachments
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Solution Overview
Problem
Firearms with protruding threads at the muzzle end are susceptible to damage and require additional thread protectors, leading to increased barrel length and altered visual appearance, which can affect purchasing decisions and attachment functionality.
Innovation Solution
Designing firearms with threaded barrels where the threaded portion is disposed within the slide, allowing for flush alignment with the muzzle end, using a thread protector with an O-ring to prevent rotation during firing and a knurling feature for easy removal, ensuring the attachment is securely fastened without protrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If threads are added to the muzzle end of the barrel to facilitate attachment, then the ability to affix an attachment is improved, but the threads become susceptible to damage and require additional thread protectors
Solution Approach 1:
The threaded portion of the barrel is nested within the slide, with the threads positioned inside the slide's interior space. This nesting arrangement allows the threads to be accessible for attachment while being protected from external damage by the slide structure.
Solution Approach 2:
The slide acts as an intermediary protective structure between the external environment and the threaded portion. The slide's interior space serves as a protective cavity that shields the threads from direct exposure to damaging elements while still allowing attachment functionality.
2Reliability
If thread protectors are added to protect protruding threads, then thread damage is reduced, but the barrel length increases and requires specialized holsters
Solution Approach 1:
The thread protector is nested within the slide's interior space, allowing it to provide protection without extending beyond the slide's exterior. This nested arrangement eliminates the need for additional external protection structures that would increase overall barrel length.
Solution Approach 2:
The thread protector is merged with the slide structure, combining the protective function with the existing slide component. This integration eliminates the need for separate external thread protectors and avoids additional length requirements.
3Adaptability or versatility
If threads protrude beyond the slide, then attachment can be affixed, but the visual appearance is altered and influences purchasing decisions
Solution Approach 1:
The threaded portion is nested within the slide's interior space, making it invisible from the external view. This nested arrangement preserves the original visual appearance of the firearm while maintaining attachment capability through the hidden threads.
Solution Approach 2:
The threaded portion is extracted from the external protruding position and relocated to the internal space of the slide. This extraction removes the visual disturbance caused by protruding threads while preserving the functional attachment capability.
Data Source
AI summary
Firearms having threaded barrels with hidden threads. The barrel has a threaded portion disposed within the slide of the firearm when the firearm is in battery so that the muzzle end of the barrel is aligned with the muzzle end of the slide. The barrel is configured to couple with a barrel attachment, such as a thread protector, such that the coupling portion of the barrel attachment is disposed within the slide of the firearm when the firearm is in battery.