Charging Handle Exhaust Ventilation Gas Diversion

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Solution Overview

Problem

Existing firearm gas diversion systems fail to effectively redirect exhaust gases away from the user's face, particularly when the gas is not fully expelled out the front of the barrel, leading to potential harm from gas blown back during the operation of automatic or semiautomatic firearms.

Innovation Solution

A charging handle with integrated exhaust ventilation features, such as holes or slots along its upper surface and sides, redirects expanding gas from the front end towards the receiver, preventing it from reaching the rear of the firearm or the user's face by channeling it down into the receiver.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If gas diversion features are integrated near the rear portion of the charging handle, then some gas redirection is achieved, but a significant portion of gas is still expelled to the rear and back into the user's face

Engineering Contradiction:

Improvegas exposure to user's faceVSAvoideffectiveness of gas diversion

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The charging handle shaft is divided into multiple segments with ventilation features distributed along its length, particularly in the first half proximate to the front end. This segmentation allows exhaust gas to be diverted at multiple points along the shaft rather than relying on a single diversion location, thereby improving overall gas redirection effectiveness and reducing gas exposure to the user's face.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Ventilation features are concentrated in the first half of the shaft length proximate to the front end, where exhaust gas pressure and flow are highest. This local concentration of diversion features where they are most needed effectively redirects the majority of exhaust gas before it can reach the rear of the firearm and the user's face, addressing the harmful gas exposure problem more effectively.

Inventive Principle:

Principle #3Local quality

2Strength

If the charging handle shaft is made solid for structural integrity, then strength is maintained, but exhaust gas cannot be redirected through the shaft

Engineering Contradiction:

Improveshaft structural integrityVSAvoidexhaust gas reaching rear of firearm

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The charging handle shaft incorporates ventilation features such as holes, slots, or channels that create a porous structure. These features allow exhaust gas to pass through the shaft and be redirected into the receiver, while the shaft maintains sufficient structural integrity to function as a charging handle. The porous design enables gas redirection without compromising the shaft's mechanical strength.

Inventive Principle:

Principle #31Porous materials

3Object-affected harmful factors

If ventilation features are added to the charging handle shaft, then exhaust gas redirection is improved, but the complexity of the charging handle increases

Engineering Contradiction:

Improveexhaust gas redirection effectivenessVSAvoidcharging handle structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The ventilation features are integrated directly into the shaft structure as simple holes, slots, or channels, rather than adding separate complex diversion mechanisms. This extraction approach allows exhaust gas to be redirected through straightforward openings in the shaft, improving gas redirection while minimizing the increase in overall device complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution significantly reduces the risk of gas exposure to the user's face by effectively diverting exhaust gases away from the rear of the firearm, enhancing user safety during operation.

Implementation Method 1

The one or more ventilation features may be configured to redirect exhaust received from a portion of expanding gas at a front end of the shaft toward the rear of the firearm. The exhaust may be redirected from an upper surface and/or side surfaces of the charging handle down into the receiver.

Methodology Applied

Scientific EffectGas flow redirection:

Data Source

PatentUS10203174B2Charging handle with exhaust ventilation

Publication Date: 2019.02.12 AXTS INC

AI summary

A charging handle includes a shaft, a front end that is operably coupled to a firearm bolt carrier, and a head that is located on an opposite end of the shaft from the front end. One or more ventilation features may be located in a first half of the length of the shaft proximate to the front end of the charging handle to prohibit exhaust that travels from the front end along the upper surface and/or side surfaces of the shaft from reaching the rear of the firearm and/or the head of the charging handle.