Armorer Tool Torque Distribution for Firearm Assembly

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Solution Overview

Problem

The existing methods for removing and installing firearm parts, such as barrel nuts, often transfer torque to other parts of the firearm, causing unwanted damage due to friction, particularly between the barrel nut and the upper receiver.

Innovation Solution

An armorer tool with a elongate member featuring splines to mate with the barrel nut extension and protrusions that align with the ejection port to distribute torque, reducing frictional stress on the barrel and upper receiver during mounting and dismounting operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If torque is applied during removal or mounting of firearm parts, then the parts can be successfully removed or installed, but the torque is transferred to other parts of the firearm causing unwanted damage

Engineering Contradiction:
Improveability to remove or install firearm partsVSAvoiddamage to firearm parts from torque transfer
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The armorer tool serves as an intermediary device between the torque application point (barrel nut) and the firearm components. The tool's body engages the barrel nut extension while the protrusion engages the ejection port rim, creating a mediator that controls torque distribution and prevents direct harmful transfer to the upper receiver and barrel.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention converts the potentially harmful torque transfer into a beneficial controlled distribution. By designing the tool with specific engagement features (splines, protrusion, well alignment), the torque that would normally damage components is instead channeled through the ejection port rim, which is designed to handle such forces, thereby protecting the more vulnerable pin and recess areas.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

2Productivity

If traditional methods are used to secure barrel nuts, then assembly can be completed, but frictional stress damages the barrel nut pin and recess

Engineering Contradiction:
Improveassembly completionVSAvoidintegrity of barrel nut pin and recess
Core Design Contradiction:
ProductivityVSStrength

Solution Approach 1:

The armorer tool acts as a mediator that redistributes the frictional stress during assembly. The protrusion contacting the ejection port rim creates an alternative load path that bypasses the vulnerable pin and recess areas, allowing assembly to proceed without damaging these critical components.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention applies local quality by concentrating the torque and frictional stress at a specific location (the ejection port rim) rather than distributing it throughout the entire assembly. This localized stress concentration protects the pin and recess areas while still enabling successful assembly through controlled stress application at the rim interface.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20160202008A1Armorer tool
Publication Date: 2016.07.14 WHG PROPERTIES LLC
  • US20160202008A1 patent drawing
  • US20160202008A1 patent drawing
  • US20160202008A1 patent drawing

AI summary

An armorer tool for distributing the torque associated with assembling and disassembling components of a firearm.