Self-regulating Gas System for Suppressed Weapons

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Solution Overview

Problem

The installation of a sound suppressor on firearms often causes cyclic operation speed to increase due to residual pressures, requiring manual adjustment of regulators to balance energy in gas operating systems, which is inconvenient and inefficient.

Innovation Solution

A self-regulating gas system that automatically reduces the volume of propellant gas by blocking or reducing the cross-sectional area of gas ports in the barrel when a suppressor is attached, using a spring-loaded plunger assembly and regulator mechanism to maintain consistent operating speeds with or without a suppressor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a suppressor is attached to the muzzle, then sound suppression is achieved, but cyclic operation speed increases due to residual pressures

Engineering Contradiction:

ImprovesoundVSAvoidcyclic operation speed

Core Design Contradiction:

Object-affected harmful factorsVSSpeed

Solution Approach 1:

The system applies preliminary anti-action by using the suppressor's own residual pressure (which would otherwise increase cyclic speed) to actuate the regulator plunger in advance, blocking gas ports before the next cycle begins. This prevents the harmful effect of excessive cyclic speed while maintaining the beneficial sound suppression function.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The invention converts the harmful residual pressure from the suppressor (which causes unwanted cyclic speed increase) into a beneficial actuating force. The regulator plunger uses this same residual pressure to block gas ports and regulate energy, turning the harmful effect into the mechanism for correcting the problem.

Inventive Principle:

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

2Reliability

If manual regulator activation is required, then gas energy can be balanced, but ease of operation decreases

Engineering Contradiction:

Improvegas energy balanceVSAvoidregulator activation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system implements self-service by automatically using the suppressor's residual pressure to actuate the regulator plunger. The gas system regulates itself without manual intervention, combining the reliability of proper gas energy balance with the ease of automatic operation. The suppressor essentially regulates its own effect on the gas system.

Inventive Principle:

Principle #25Self-service

3Speed

If gas ports are blocked to reduce energy, then operating speed is controlled, but gas flow is reduced

Engineering Contradiction:

Improveoperating speedVSAvoidgas flow

Core Design Contradiction:

SpeedVSQuantity of substance

Solution Approach 1:

The system applies dynamics by making the gas port blockage adjustable rather than fixed. The regulator plunger can move to different positions, blocking different portions of the gas ports based on operating conditions. This allows dynamic control of gas flow to maintain optimal operating speed while preserving sufficient gas energy for reliable operation.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the parameter of gas port opening area dynamically. By varying the degree of blockage on the gas ports through regulator plunger movement, the system optimizes the balance between gas flow quantity and operating speed, adjusting the effective area of gas ports to match operational requirements.

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

This solution automatically adjusts the gas system to match operating speeds between suppressed and unsuppressed conditions, eliminating the need for manual regulator activation and ensuring consistent firearm performance.

Implementation Method 1

a spring-loaded plunger assembly positioned within a bore of the gas block... the plunger assembly including a regulator plunger, a regulator spring

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the suppressor depresses a regulator plunger which cuts off one of the gas ports, reducing the amount of gas entering the system to cycle the weapon

Methodology Applied

Scientific EffectPressure Gradient: Pressure Gradient

Data Source

PatentUS8950313B2Self regulating gas system for suppressed weapons

Publication Date: 2015.02.10 REM TML HOLDINGS LLC

AI summary

A gas system for an autoloading firearm wherein the gas used to cycle the weapon can be restricted automatically through a mechanical shutoff actuated by the installation of a suppressor on the weapon. The gas system could be used to actuate either a piston to mechanically operate the weapon or a gas impingement mechanism wherein the gas is redirected into the bolt carrier assembly to directly actuate the unlocking and cycling of the bolt and bolt carrier group. A gas block for the firearm includes a spring-loaded plunger assembly positioned within a bore of the gas block and oriented parallel to a bore of a barrel of the firearm, the plunger assembly including a regulator plunger, a regulator bushing, a regulator spring, and a regulator cap. Mounting a suppressor over the muzzle depresses the regulator plunger driving it rearward, the rearward movement of the regulator plunger blocking one of gas ports in the gas block to automatically reduce the volume of propellant gases directed into the gas system.