Pneumatic Arrangement for Less-Lethal Device with Pressure Control
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Solution Overview
Problem
Current less-lethal devices are inefficient, inaccurate, and ergonomically unfriendly, often leading to misuse and ineffective incapacitation of targets, with existing pneumatic arrangements lacking sensitivity and practicality for emergency situations.
Innovation Solution
A pneumatic arrangement for a less-lethal device featuring a puncture mechanism with a displaceable body that pierces the canister seal upon initial trigger actuation, ensuring consistent gas flow and projectile launch, combined with a pressure-sensitive activation assembly to control gas release, allowing for adjustable kinetic force and improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a puncture mechanism with displaceable body is used to pierce the canister seal upon initial trigger actuation, then the device achieves reliable gas flow initiation and consistent projectile launch, but the device complexity increases due to additional components and mechanisms
Solution Approach 1:
The displaceable body is pre-positioned within the housing in a retracted state, ready to pierce the canister seal upon trigger actuation. This preliminary positioning ensures that the piercing action occurs reliably at the moment of trigger pull, eliminating delays and ensuring consistent gas flow initiation for each projectile launch.
Solution Approach 2:
The displaceable body acts as an intermediary component between the trigger mechanism and the canister seal. It translates the trigger actuation into a controlled piercing motion, mediating the force application to ensure reliable seal penetration and consistent gas flow initiation without directly connecting the trigger to the canister.
2Measurement precision
If a pressure-sensitive activation assembly is used to control gas release, then the accuracy of projectile propulsion is improved, but the device complexity increases due to additional control mechanisms
Solution Approach 1:
The pressure-sensitive activation assembly incorporates a feedback mechanism that monitors the gas pressure within the canister and adjusts the gas release accordingly. This feedback control ensures that the projectile is propelled with consistent and accurate force, maintaining measurement precision in projectile propulsion while automatically regulating the gas flow based on real-time pressure conditions.
Solution Approach 2:
The pressure-sensitive activation assembly is designed to automatically regulate gas release based on the pressure conditions within the canister, without requiring external intervention or complex control systems. The assembly self-adjusts the gas flow to maintain accurate projectile propulsion, performing the control function autonomously and reducing the need for additional complexity.
3Volume of moving object
If the canister is received within the device body with a puncture mechanism, then the overall device size is reduced, but the ease of operation decreases due to the need for precise trigger actuation to initiate gas flow
Solution Approach 1:
The puncture function is extracted as a separate, dedicated action performed by the displaceable body that is actuated by the trigger mechanism. This extraction allows the canister to be compactly received within the device body while the trigger is designed to perform the specific function of initiating the puncture action, separating the piercing function from the general operation to simplify the triggering process.
Solution Approach 2:
The canister seal is designed as a single-use component that is pierced by the displaceable body upon trigger actuation. This disposable seal allows for simple, reliable operation where the trigger pull directly initiates the piercing action without requiring complex multi-step operations, enhancing ease of operation while maintaining compact device size.
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 provides a compact, accurate, and reliable less-lethal device capable of effectively incapacitating targets at extended ranges, adhering to legislative requirements and enhancing user safety and precision.
Implementation Method 1
piercing mechanism pierces the seal of the canister when the displaceable body is displaced towards the second position, so that compressed gas flows from the canister through the internal bore
Implementation Method 2
pressure sensitive activation assembly used to inhibit the device from propelling a projectile therefrom before a predetermined pressure is reached within a release valve of the device
Implementation Method 3
release valve assembly for venting compressed gas to a barrel to propel the projectile from the device
Implementation Method 4
propelling assembly for adjusting the kinetic force with which a hammer impacts a release valve of the device
Data Source
Figure 1
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Figure 5~7
AI summary
This invention relates to a pneumatic arrangement of a less-lethal device, which pneumatic arrangement comprises a puncture mechanism used for puncturing a sealed mouth of a canister of compressed gas, in use received within a body of the less-lethal device; a pressure sensitive activation assembly used to inhibit the device from propelling a projectile therefrom before a predetermined pressure is reached within a release valve of the device; a release valve assembly for venting compressed gas to a barrel to propel the projectile from the device; and a propelling assembly for adjusting the kinetic force with which a hammer impacts a release valve of the device. The invention also relates to a method of propelling a projectile from a less-lethal device.