Paintgun with pneumatic feeding and discharging process

A paintgun with pneumatic feeding and discharging process comprising:

• a trigger assembly used to actuate the firing element of paintballs;
• a barrel assembly fitted above said trigger assembly, a bore being provided at the front end thereof, a paintball-feeding tube being disposed above said bore;
• a pneumatic delivery mechanism installed within said barrel assembly;
• wherein the improvement of the present invention is characterized by said pneumatic delivery mechanism comprising:
• a flow-guiding body fixed at the rear end of said barrel assembly, the front end of said flow-guiding body being constructed as tube with smaller diameter and projecting into said barrel assembly, said flow-guiding body having an axially extended conic hole which consists of a major air channel at the front end and a flow-guiding chamber at the rear end thereof, said flow-guiding chamber having an input port at one side thereof which is in connection with an air pressure source and an output port at the other side thereof which communicates with a minor air channel at the wider part of said flow-guiding body, a stopper being used to control the opening and closing of the air flow channel, said minor air channel being connected into said barrel assembly, the movement of said stopper being controlled by said trigger assembly;
• a flow-guiding piston disposed within said flow-guiding chamber with a slimmer front part and a wider rear part, an air piston at the front end of said flow-guiding piston being forced against said major air channel while a valve body at the rear end of said flow-guiding piston is inserted into the internal wall of said flow-guiding chamber such that the flow-guiding chamber is divided by said valve body into a front and a rear air pressure chambers with different pressure area, a small through hole being interposed between said front and rear air pressure chambers;
• and
• a delivery tube being placed around said tube at the front end of said flow-guiding body, a return spring being disposed around the front part of said delivery tube;
• so that said stopper is used to control the opening or closing of air flow channel, thereby leading to a pressure difference between said front and rear air pressure chambers of said flow-guiding piston, and said delivery tube is shifted forward by means that a small amount of air flow is fed into said minor air channel so as to push a paintball a little forward;
• thereafter, said paintball is discharged by means of thrust of air flow into said major air channel.