Progressively Ported Gun Barrel for Recoil Reduction

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Solution Overview

Problem

Existing gun barrel porting systems are ineffective in reducing recoil and muzzle climb due to equally spaced ports that do not account for uneven gas distribution, and can cause stress fractures in short barrels with sharp corners.

Innovation Solution

A progressively ported gun barrel design with varying spacings and angled ports that taper outward, allowing for specific direction and angle of gas venting to reduce recoil and muzzle climb, while avoiding stress fractures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If equally spaced ports are used in the barrel, then the porting system is simple to manufacture, but the ports are ineffective in controlling gas velocity due to uneven gas distribution

Engineering Contradiction:
Improveport spacing simplicityVSAvoidgas velocity control effectiveness
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent applies local quality by varying the spacing between ports along the barrel length. Ports are spaced more closely near the muzzle where gas velocity is highest and progressively farther apart toward the rear, creating non-uniform local characteristics that match the non-uniform gas distribution pattern. This resolves the contradiction by maintaining manufacturing simplicity while significantly improving gas velocity control effectiveness.

Inventive Principle:
Principle #3Local quality

2Reliability

If slotted or trapezoidal shaped ports are used, then the ports can be effective for long barrel guns, but they cause splitting of the barrel and negatively impact integrity in short barrels

Engineering Contradiction:
Improverecoil reduction effectivenessVSAvoidbarrel integrity
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The patent uses circular port shapes instead of slotted or trapezoidal configurations. Circular ports distribute stress uniformly around the barrel wall, eliminating stress concentration points that occur with angular or slot-shaped ports. This resolves the contradiction by maintaining recoil reduction effectiveness while preventing barrel splitting and preserving structural integrity across all barrel lengths.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Reliability

If ports are positioned to vent gases upward, then muzzle climb is reduced, but the port configuration becomes complex to optimize for different barrel lengths

Engineering Contradiction:
Improvemuzzle climb controlVSAvoidadaptability to different barrel lengths
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent optimizes port parameters including spacing, diameter, and angular orientation relative to the barrel axis. By carefully selecting these parameters, the design achieves effective muzzle climb control while maintaining adaptability across different barrel lengths. The progressive spacing pattern and angular positioning work effectively whether the barrel is short or long, resolving the contradiction between muzzle climb control and adaptability.

Inventive Principle:
Principle #35Parameter changes

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 design effectively reduces recoil and muzzle climb, improving shooter control and accuracy by directing gases efficiently and reducing the risk of barrel stress fractures across all barrel lengths.

Implementation Method 1

the porting of the barrel enables the venting of the gases in a generally upward direction during the firing process. The venting of the gases opposes the forces that generally cause muzzle climb and/or recoil

Methodology Applied
Scientific EffectGas flow direction control:

Implementation Method 2

A plurality of ports is formed in the gun barrel and taper outward from an inner surface to an outer surface of the gun barrel

Methodology Applied
Scientific EffectGas expansion and velocity reduction:

Data Source

PatentUS8915174B1Progessively ported gun barrel
Publication Date: 2014.12.23 HEIZER DEFENSE LLC
  • US8915174B1 patent drawing
  • US8915174B1 patent drawing
  • US8915174B1 patent drawing

AI summary

The present invention is an improved barrel for a gun, wherein the gun barrel has an axis and a front face defined by a plane extending perpendicular to the axis. A plurality of ports is formed in the gun barrel. A first set of ports has a first spacing and a second set of ports is spaced apart from the first set of ports by a spacing distance greater than the first spacing.