Firearm Suppressor With Balanced Parallel Gas Flow Paths

Solution Overview

Problem

Existing gun suppressors do not completely eliminate noise and create increased back pressure in firearms, leading to potential jamming and blowback issues, due to inefficient gas flow management and noise suppression mechanisms.

Innovation Solution

A suppressor design with balanced pressure and velocity in parallel flow paths, utilizing equalization holes and baffles to split gas flow between inner and outer chambers, ensuring gases exit simultaneously to minimize noise and back pressure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the volume of the suppressor is increased to improve sound suppression, then noise reduction is enhanced, but the suppressor becomes more cumbersome and difficult to use

Engineering Contradiction:
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The suppressor is divided into multiple chambers (first chamber, second chamber, third chamber) with distinct functions. The first chamber handles initial gas expansion, the second chamber provides further expansion space, and the third chamber facilitates final gas discharge. This segmentation allows effective noise suppression without requiring a single large-volume chamber, making the suppressor more compact and manageable.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The suppressor employs a multi-chamber longitudinal arrangement rather than a single large-volume design. By distributing the suppression function across multiple chambers in sequence, the design achieves effective noise reduction while maintaining a compact overall structure that does not excessively lengthen the barrel or increase diameter beyond practical limits.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If traditional suppressor designs are used to reduce noise, then some noise suppression is achieved, but increased back pressure causes firearm bolt velocity increase and potential jamming

Engineering Contradiction:
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The gas flow path is segmented into multiple chambers with progressive expansion. The first chamber provides initial expansion space, the second chamber continues the expansion process, and the third chamber allows final gas discharge. This segmented approach gradually reduces gas pressure throughout the chambers, preventing excessive back pressure buildup that would otherwise cause bolt velocity increases and potential jamming, while still achieving effective noise suppression.

Inventive Principle:
Principle #1Segmentation

3Object-affected harmful factors

If suppressors are used to control gas expansion and minimize noise, then noise is reduced, but the suppressor creates sustained increased pressure within the firearm system

Engineering Contradiction:
Core Design Contradiction:
Object-affected harmful factorsVSStress or pressure

Solution Approach 1:

The suppressor system is divided into three chambers that progressively manage gas pressure. The first chamber captures initial high-pressure gas expansion, the second chamber allows continued pressure reduction through additional expansion space, and the third chamber facilitates final pressure release. This segmented pressure management approach minimizes sustained back pressure on the firearm system while achieving effective noise reduction.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The suppressor design converts the harmful effect of high-pressure gas expansion (noise) into a beneficial progressive pressure reduction process. By channeling the expanding gas through multiple chambers with increasing volume, the design transforms the potentially harmful sustained pressure into a controlled, gradual pressure release that achieves noise minimization without excessive back pressure.

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

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 suppressor effectively reduces noise and prevents increased back pressure, allowing for efficient sound suppression without compromising firearm operation, by balancing gas flow velocities and pressures between inner and outer chambers, thus enhancing the performance and reliability of firearms.

Implementation Method 1

The gas generated during firing of the projectile is able to expand into the chambers. The chambers are arranged such that a first chamber is comparatively larger than the volume of the gun barrel. Accordingly, the first chamber provides a large volume into which the gas may expand.

Methodology Applied
Scientific EffectGas expansion:

Implementation Method 2

the suppressor is configured so that the first volume of gases that flows into the outer chamber and the second volume of gases that flows into the inner chamber exhaust from the suppressor at substantially the same time

Methodology Applied
Scientific EffectPressure balancing:

Data Source

PatentEP3887745B1A suppressor for a gun
Publication Date: 2024.07.24
  • EP3887745B1 patent drawingFigure 1~3
  • EP3887745B1 patent drawingFigure 4~6
  • EP3887745B1 patent drawingFigure 7~10

AI summary

A suppressor for a firearm comprises an inner chamber providing a gases inner flow path and an outer chamber providing a parallel gases outer flow path. The suppressor is configured so that gases pressure between the inner chamber and the outer chamber is balanced along the length of the inner and outer chambers so that gases exhaust from the inner and outer chambers at substantially the same time.