CO2 Rocket Dart for Personal Protection
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Solution Overview
Problem
Current self-defense weapons are limited in effectiveness and safety, with guns being bulky and requiring skill, tazer devices being bulky and effective only at close range, and spring-loaded darts being weak, while there is a need for a device that can incapacitate a human target without causing lethal injury and can be easily aimed and fired without training.
Innovation Solution
A CO2 powered rocket projectile device with a rounded front end and 18-gauge needle capable of penetrating clothing but not causing lethal injury, featuring a safety mechanism, multiple loading locations for quick succession launches, and minimal recoil, designed for easy use and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a gun is used for self-defense, then the projectile can reach the target quickly, but the device is bulky and requires special handling of explosives
Solution Approach 1:
The patent replaces explosive propellants with compressed CO2 gas to propel the projectile. The CO2 cartridge provides pneumatic pressure to accelerate the dart through the barrel, achieving high speed without requiring explosives or complex firing mechanisms. This resolves the contradiction by maintaining projectile speed while eliminating the need for dangerous explosive materials and simplifying the overall device structure.
2Force
If a rocket is used instead of a gun, then recoil is minimized, but the barrel needs to be long enough for the rocket to gain speed
Solution Approach 1:
The patent uses a relatively long barrel compared to traditional firearms, allowing the rocket-powered projectile to accelerate fully before exiting. The extended barrel length provides sufficient distance for the CO2 propellant to build up velocity, while the rocket mechanism ensures continuous acceleration throughout the barrel, maximizing speed before the projectile leaves the device.
Solution Approach 2:
The rocket-powered projectile uses compressed gas to generate thrust continuously as it travels through the barrel. This pneumatic propulsion system provides sustained acceleration over the extended barrel length, achieving high velocity while minimizing recoil compared to explosive-based systems where all force is applied instantaneously.
3Device complexity
If spring-loaded darts are used, then the device is simple, but the projectiles are hopelessly weak
Solution Approach 1:
The patent replaces weak spring mechanisms with compressed CO2 gas propulsion. The pneumatic system generates significantly higher pressure and force than mechanical springs, accelerating the projectile to much higher velocities. This maintains relative simplicity while dramatically increasing projectile force and effectiveness.
Solution Approach 2:
The invention changes the propellant parameter from mechanical spring energy to compressed gas energy. This parameter change increases the energy density and pressure available for propulsion, transforming the projectile force from insufficient to lethal while keeping the overall device structure relatively simple.
4Illumination intensity
If a projectile is made visible in flight, then the target can react to avoid it, but the projectile may not reach the target before the target moves
Solution Approach 1:
The patent achieves extremely high projectile velocity through CO2-powered rocket acceleration, reaching speeds sufficient to hit the target before the target can react or move. The visible projectile travels so fast that the human reaction time is insufficient to avoid impact, resolving the contradiction between visibility and speed by making the projectile both visible and incredibly fast.
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 device achieves rapid incapacitation of a human target with minimal training required, providing accurate and painful impact without lethal injury, meeting safety and effectiveness criteria for self-defense, with accuracy within 6 inches at 10 feet and 12 inches at 20 feet, and minimal recoil.
Implementation Method 1
The force for accelerating a rocket is generated by the rocket itself, in reaction to the mass of exhaust being ejected from the rear of the rocket
Implementation Method 2
Rockets create minimum 'recoil' force on their launching platform, the only effect being of that which occurs from exhaust hitting the platform, or drag on the platform as the rocket leaves the platform
Implementation Method 3
This resistance to motion creates a drag force, which keeps the rocket in a straight course
Data Source
AI summary
The device of the present disclosure is a weapon. The weapon having a CO2 powered projectile which is fired from the weapon, used principally for self-defense. The projectile is generally rocket shaped wherein the front end of the rocket can be formed by a rounded shape of a front of a CO2 cylinder. The impact of the rocket projectile on a human could cause some pain, depending upon exactly what part of the body it hits. The impact could also cause some loss of balance to a human, due to the impact.