Pneumatic Timing Spool Valve Assembly for High Fire Rate Reliability
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Solution Overview
Problem
Existing pneumatic actuation valve systems for paintball guns and similar applications face challenges in achieving a high fire rate, light trigger pull, and lightweight design, with mechanical guns being less accurate and consistent while electronic guns are prone to moisture damage and require professional servicing.
Innovation Solution
A pneumatic actuation valve assembly featuring a timing spool and main spool mechanism with a magnet to control the movement of a bolt, allowing pressurized fluid to efficiently propel projectiles, with a spring for recoil and adjustable seal diameters for pressure control, enabling improved fire rate and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical pneumatic actuation valve is used, then reliability is improved and maintenance is simplified, but fire rate is reduced and trigger pull weight increases
Solution Approach 1:
The valve assembly is divided into multiple functional components including a timing spool with separate timing control function, a main spool for primary valve control, and a bolt mechanism for projectile delivery. This segmentation allows each component to be optimized independently - the timing spool controls the timing sequence for high fire rate, while the main spool ensures reliable actuation, resolving the contradiction between speed and reliability.
2Device complexity
If a mechanical pneumatic actuation valve is used, then structural simplicity is improved, but trigger pull weight increases
Solution Approach 1:
The patent replaces traditional mechanical spring-loaded valve mechanisms with a pneumatic timing spool system controlled by pressurized fluid. The timing spool uses fluid pressure differentials and magnetic attraction forces instead of heavy mechanical springs, reducing the force required at the trigger while maintaining structural control. This substitution of mechanical systems with pneumatic and magnetic systems resolves the contradiction between structural simplicity and reduced trigger pull weight.
3Speed
If pressure in the rear main spool pressure area is released through the bore, then timing spool response speed is improved, but pressure control precision may be affected
Solution Approach 1:
The patent employs adjustable seal diameters on the timing spool that can be changed to modify the size of the bore through which pressure is released. By changing this geometric parameter, the system can optimize the balance between response speed (larger bore) and pressure control precision (smaller bore) based on operational requirements. This parameter adjustability resolves the contradiction between speed and precision.
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 enhances fire rate, reduces trigger pull weight, and improves reliability by efficiently using pressurized fluid to propel projectiles with adjustable pressure settings, addressing the limitations of both mechanical and electronic pneumatic systems.
Implementation Method 1
a magnet disposed in the timing spool housing disposed adjacent to a timing spool front end and configured to hold the timing spool in a forward position at a first phase of an operating cycle and a rearward position at a second phase of the operating cycle
Implementation Method 2
a main spool at least partially received in the timing spool housing and configured to travel toward a frame forward portion when a fluid is received into a mid-main spool pressure area
Implementation Method 3
A spring can be disposed in the frame and configured to move the bolt rearward when pressure in the bolt pressure area is released
Implementation Method 4
pressurized fluid to eject the projectile from a barrel
Data Source
AI summary
This system is a pneumatic actuation valve assembly that can include a frame; a timing spool housing; a timing spool carriage; a timing spool; a magnet configured to bias the timing spool in a forward position; a main spool and configured to travel toward a frame forward portion when a fluid is received into a mid-main spool pressure area wherein the main spool actuates a bolt carried by the frame and is configured to receive a projectile in an open position and chamber the projectile in a closed position; and, a bore defined in the timing spool configured to allow pressure in a rear main spool pressure area to escape through the bore releasing rearward pressure on the timing spool allowing the timing spool to travel from the rearward position to the forward position according to an attraction of the magnet.