Pistol-Caliber Gas Operating System with Regulated Piston
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Solution Overview
Problem
Existing pistol-caliber firearms face challenges in achieving automatic-firing capabilities due to reduced pressures and shortened pressure curves offered by pistol cartridges, leading to unreliable operation and increased complexity in submachine guns.
Innovation Solution
A gas operating system that utilizes a gas block with a piston and operating rod to divert high-pressure gas from the barrel to cycle the firearm, including a gas regulator to adjust gas flow and a bolt carrier for automatic cycling, compatible with pistol cartridges such as 9 mm, .357 SIG, and .40 caliber rounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If pistol-caliber firearms use traditional operating systems, then the structure remains simple, but automatic-firing capabilities cannot be achieved due to reduced pressures and shortened pressure curves
Solution Approach 1:
The gas operating system is divided into distinct functional components: a gas block with internal channels to divert gas, a piston to convert gas pressure to mechanical motion, and an operating rod connected to the bolt carrier. This segmentation allows each component to be optimized for its specific function while working together to achieve automatic firing in pistol-caliber firearms
Solution Approach 2:
A piston is introduced as an intermediary component between the gas pressure source and the bolt carrier. The piston converts the reduced gas pressure from pistol cartridges into sufficient mechanical force to cycle the action, bridging the gap between limited gas availability and the requirements for reliable automatic operation
2Extent of automation
If pistol-caliber firearms achieve automatic cycling, then firing capability is improved, but reliability in adverse conditions deteriorates
Solution Approach 1:
The system modifies critical parameters including gas port location and size, piston diameter (0.25-0.75 inches), and piston stroke length (5-15 mm) to optimize performance across varying environmental conditions. These parameter adjustments ensure reliable operation despite changes in temperature, humidity, and cartridge variations
Solution Approach 2:
The gas block incorporates built-in compensation mechanisms that anticipate adverse conditions by maintaining consistent gas diversion and piston actuation. The design includes features such as gas regulator passages and piston geometry that ensure reliable cycling even when gas pressure varies due to environmental factors or cartridge tolerances
3Reliability
If gas flow is increased to improve cycling reliability, then automatic operation is enhanced, but recoil increases
Solution Approach 1:
The gas block features localized gas diversion channels that direct gas flow precisely to the piston at optimal points. This localized approach ensures sufficient pressure is applied to the piston to cycle the action reliably, while minimizing the overall volume of gas consumed and thereby reducing recoil impulse to the firearm
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 system improves the reliability of pistol-caliber firearms in adverse conditions and provides automatic firing capabilities with reduced complexity and recoil, enhancing operational safety and control.
Implementation Method 1
divert a volume of gas from a barrel of the firearm to the piston, the volume of gas produced during discharge of a pistol cartridge
Implementation Method 2
driven rearward by the piston upon impingement on the piston of the diverted volume of gas
Implementation Method 3
a gas flow path configured to provide fluid communication between the lower and upper channels
Data Source
AI summary
A gas operating system for automatic cycling of a pistol-caliber firearm is disclosed. The disclosed system may be configured to utilize gas produced by combustion of pistol cartridge propellant to automatically cycle the firearm. To that end, the disclosed system may include a gas block which routes high-pressure gas from the barrel through a gas port to a piston. The location of the gas port may be selected to lie within a region of the barrel which generally corresponds with the peak of the pressure curve associated with a given pistol cartridge. The high-pressure gas may impinge on the piston head, forcing the piston rearward and into physical contact with a short-stroke operating rod affixed to the bolt carrier of the host firearm. Consequently, the bolt carrier may be driven rearward, allowing for cycling of the firearm to progress.