Patent ID: 7654256

Claim:
An apparatus for loading and firing paintballs for a paintball gun, comprising: a hollow barrel; an inner sleeve located in the barrel; a plunger located in the inner sleeve in a close contact and slidable fashion; an air discharge dock located in the plunger and fastened to the inner sleeve; a moving valve located at a rear end of the air discharging dock; a driven valve rod fastened to one end of the moving valve; a valve seat located at an outer end of the moving valve; and a rear cap fastened to a rear end of the barrel; wherein the barrel has a plurality of air vents at the bottom thereof, the inner sleeve and the valve seat having respectively air directing ports in selective direct communication with the air vents, the inner sleeve having a paintball trough at a front end of the plunger; the air vents receiving an air source which moves the plunger to a selected position at a rear side of a paintball loading orifice of the barrel close to a paintball, and the air vents and the air directing ports communicating with one another to channel the air source through a gap formed between the valve seat and the moving valve so that the moving valve and the air discharge dock are closed to prevent air leaking and the air source passes through the air vents and the air directing ports in a rear end of the barrel to form an air storing space; wherein the air source is directed through the air vents and the air directing ports when a paintball is fired so that the plunger is moved to the paintball loading orifice to push the paintball to a desired position; and the air in the gap between the valve seat and the moving valve is discharged through the air vents and the air directing ports to separate the moving valve and the air discharge dock, and the air stored at the rear end of the barrel being directed to an inner end of the plunger through the separated moving valve and the air discharge dock such that the paintball in the paintball loading trough is blasted off from the barrel by air; wherein the paintball is positioned through the plunger and the moving valve in cooperating with the air vents and the air directing ports, and firing of the paintball is accomplished.