Patent ID: 11867476
Assignee: POLARSTAR ENGINEERING & MACHINE LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A pneumatic assembly for a projectile launching system, comprising:
a volume chamber;
a valve positioned within the volume chamber, the valve moveable between an exhaust position wherein flow of compressed gas from the volume chamber through the valve is facilitated while flow of the compressed gas into the volume chamber from a fill port is prevented, and a filling position wherein flow of the compressed gas from the volume chamber through the valve is prevented while flow of the compressed gas into the volume chamber from the fill port is facilitated, the valve being biased toward the exhaust position;
a body defining a continuous bore from a substantially open forward end of the body to a substantially closed rearward end of the body;
a nozzle positioned within the bore adjacent the forward end of the body, the nozzle moveable between a rearward position wherein the nozzle facilitates passage of a projectile through a projectile port, and a forward position wherein a projectile is fired and the nozzle blocks the projectile port to prevent passage of an additional projectile therethrough; and
a sear which retains the valve in the filling position and releases the valve into the exhaust position when actuated;
wherein a rear surface area the nozzle is in fluid communication with the volume chamber;
wherein a forward surface area of the nozzle is in fluid communication with a nozzle biasing chamber containing a compressed gas that subjects the nozzle to a rearward biasing force; and
wherein the rearward surface area of the nozzle is greater than the forward surface area of the nozzle so that a pressure exerted on the rear surface of the nozzle by the compressed gas in volume chamber is sufficient to overcome the rearward biasing force on the nozzle and the nozzle moves from the rearward to the forward position of the nozzle in response to the filling of the volume chamber with the compressed gas.