Gas gun having pneumatic driving device

Abstract

A compressed gas gun includes an upper housing having a barrel for receiving projectiles to be fired and having a high pressure storage chamber, a loading bolt slidably engaged in the upper housing and movable to feed the projectile forward to a firing position. A pipe is attached to the loading bolt and includes an inner space, a conduit having a pathway, and one or more apertures for communicating the inner space with the barrel. An enclosing device may be used for selectively enclosing a passage of the loading bolt to allow the pressure gas to fill the pipe and the high pressure storage chamber of the barrel, and for selectively disengaging from the loading bolt and enclosing the conduit to allow the pressure gas to fire the projectile.

1 . A compressed gas gun comprising: 
 an upper housing including a barrel having a bore, and including a projectile feed tube attached to said barrel and opened into said bore of said barrel for supplying projectiles into said bore of said barrel one at a time, and including a high pressure storage chamber formed therein and communicating with said bore of said barrel,    a lower housing having a hand grip extended downwardly for being grasped and held by a user,    a loading bolt slidably engaged in said bore of said upper housing and movable to engage with said projectile that is supplied into said bore of said barrel for feeding said projectile forwardly toward a firing position, said loading bolt including a passage formed therein and communicating with said bore of said barrel for supplying pressure gas to propel or to fire said projectile,    a pipe attached to said loading bolt and including an inner space, and including a rearwardly extending conduit having a pathway formed in said conduit and communicating with said inner space of said pipe, said pipe including at least one aperture formed therein for communicating said inner space of said pipe with said high pressure storage chamber of said barrel and said upper housing and for allowing the pressure gas to flow from said inner space of said pipe into said high pressure storage chamber of said barrel and said upper housing, and    means for selectively enclosing said passage of said loading bolt to allow the pressure gas to flow into and filled within said inner space of said pipe and said pathway of said conduit and said high pressure storage chamber of said barrel and said upper housing, and for selectively disengaging from said passage of said loading bolt and enclosing said pathway of said conduit to allow the pressure gas to flow through said passage of said loading bolt and to fire said projectile.    
   
   
       2 . The compressed gas gun as claimed in  claim 1 , wherein said loading bolt includes a radially and outwardly extending peripheral bulge slidably engaged in said bore and said high pressure storage chamber of said barrel of said upper housing.  
   
   
       3 . The compressed gas gun as claimed in  claim 2 , wherein said upper housing includes an inner peripheral shoulder formed therein and communicating with said bore and said high pressure storage chamber of said barrel of said upper housing, for engaging with said peripheral bulge of said loading bolt for limiting said loading bolt to move relative to said upper housing.  
   
   
       4 . The compressed gas gun as claimed in  claim 2 , wherein said upper housing includes a partition having a port formed therein for communicating with said bore and said high pressure storage chamber of said barrel of said upper housing, and for supplying the pressure gas to flow into said bore and said high pressure storage chamber of said barrel of said upper housing and to move said loading bolt rearwardly.  
   
   
       5 . The compressed gas gun as claimed in  claim 4 , wherein a control device is disposed in said lower housing and includes a hose coupled to said port for supplying the pressure gas to said bore and said high pressure storage chamber of said barrel of said upper housing.  
   
   
       6 . The compressed gas gun as claimed in  claim 1 , wherein said enclosing means includes a blocking member slidably received in said inner space of said pipe and selectively movable to be forced onto or against said loading bolt to enclose said passage of said loading bolt and selectively movable to be forced onto or against said conduit to enclose said pathway of said conduit.  
   
   
       7 . The compressed gas gun as claimed in  claim 6 , wherein said upper housing includes a partition having a port formed therein for communicating with said bore and said high pressure storage chamber of said barrel of said upper housing, and for supplying the pressure gas to flow into said bore and said high pressure storage chamber of said barrel of said upper housing and to move said blocking member to enclose said passage of said loading bolt.  
   
   
       8 . The compressed gas gun as claimed in  claim 7 , wherein said upper housing includes a rear end cap for blocking said high pressure storage chamber and said bore of said barrel and said upper housing, said end cap includes a cavity formed therein and communicating with said bore of said barrel and an aperture formed therein and aligned with said port of said partition for communicating said cavity of said end cap and said bore of said barrel with said port of said partition.  
   
   
       9 . The compressed gas gun as claimed in  claim 1 , wherein a piston is slidably engaged onto said conduit of said pipe and movable toward said pipe and arranged to allow the pressure gas to force said piston forwardly toward said pipe and to selectively force the pressure gas to flow from said high pressure storage chamber of said barrel into said inner space of said pipe and then to flow into said passage of said loading bolt.  
   
   
       10 . The compressed gas gun as claimed in  claim 9 , wherein said upper housing includes a partition having a port formed therein for communicating with said bore and said high pressure storage chamber of said barrel of said upper housing, and for supplying the pressure gas to flow into said bore and said high pressure storage chamber of said barrel of said upper housing and to move said piston toward said pipe.