Pneumatic Projectile Engine Spool Valve Mechanism
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Solution Overview
Problem
Current airsoft projectile launching systems, whether pneumatic or spring-powered, face issues with accuracy, durability, and space constraints, with spring-powered systems prone to mechanical failure and pneumatic systems being too bulky for airsoft guns.
Innovation Solution
A projectile launching engine powered by pressurized gas, featuring a movable nozzle and valve stem mechanism that directs gas flow to fire projectiles upon trigger depression, with a holding chamber and pressure chamber configuration to manage gas flow and nozzle positioning for efficient firing and loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If spring-powered launching systems are used, then the system can be compact and portable, but the system suffers from mechanical failure and reduced accuracy due to piston impact
Solution Approach 1:
The patent replaces the spring-powered mechanical system with a pneumatic system using compressed gas to propel the projectile. This eliminates the compressed spring, piston, and associated mechanical components that cause wear and failure, while maintaining compact size suitable for airsoft guns.
Solution Approach 2:
The invention uses compressed gas (pneumatic power source) to directly drive the projectile through a barrel. The system includes a gas reservoir, valve mechanism, and nozzle to control gas flow, replacing all spring-based mechanical propulsion components with a pneumatic propulsion system.
2Reliability
If pneumatic launching systems with independent nozzle and valve control are used, then accuracy and reliability are improved, but the system becomes bulky and cannot fit in airsoft guns
Solution Approach 1:
The patent combines the nozzle and valve into a single integrated component called a spool valve. This merging of functions allows independent control of gas flow timing and nozzle positioning while maintaining a compact design that fits within airsoft gun constraints.
Solution Approach 2:
The spool valve serves multiple functions simultaneously: it acts as both the valve for controlling gas flow timing and the actuator for nozzle positioning. This multi-functionality reduces the number of separate components needed, minimizing system size while maintaining reliable pneumatic operation.
3Adaptability or versatility
If spring compression is used to drive the piston, then the system can be powered without external gas supply, but the system experiences mechanical stress and reduced durability
Solution Approach 1:
The patent replaces the spring compression mechanism with a direct pneumatic system using compressed gas stored in a reservoir. This eliminates mechanical stress on moving parts while providing consistent propulsion force, significantly improving durability and component strength.
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 provides improved accuracy and durability by utilizing pressurized gas to fire projectiles reliably, with a compact design suitable for airsoft guns, enhancing usability and reducing mechanical stress.
Implementation Method 1
the nozzle directs a supply of pressurized gas into contact with a projectile such that the projectile is fired
Implementation Method 2
the supply of pressurized gas flows into an air passageway that extends between the central bore and the front bore
Implementation Method 3
The holding chamber receives the supply of pressurized gas which creates a force to hold the front sealing ring of the valve stem in the forward sealing position
Implementation Method 4
the pressurized gas contained within the discharge chamber is vented to atmosphere such that the holding force is removed from the valve stem
Data Source
AI summary
A projectile launching system for pneumatically launching projectiles is disclosed. The projectile launching system includes a nozzle that is positioned within an engine body and movable between a rearward, loading position and a forward, firing position. A valve stem contained within the engine body is moveable to selectively control the discharge of pressurized gas to propel the projectile. The movement of the valve stem controls the supply of pressurized air to move the nozzle to the rearward, loading position upon firing of a projectile. A trigger assembly is used to selectively control the venting of pressurized air to atmosphere to control the movement of the valve stem within the projectile launching system.