Gas gun having spring loading bolt

Abstract

A compressed gas gun includes an upper housing having a barrel, a projectile feed tube for supplying projectiles into the barrel, a loading bolt for feeding the projectile and having an angled port for supplying pressure gas to propel or to fire the projectile. A lower housing includes a valve stem guide to form a high pressure storage chamber and to selectively supply the pressure gas to propel the projectile, a valve stem is slidably received,in the valve stem guide. A hammer is movable to actuate the valve stem, a link pin is secured to the hammer, and a spring biasing member may bias the loading bolt to resiliently engage with the projectile and to prevent the projectile from being cut or sheared inadvertently.

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,    a loading bolt slidably engaged in 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 an angled port communicating with said bore of said barrel for supplying pressure gas to propel or to fire said projectile, said loading bolt including a channel formed therein,    a lower housing having a hand grip extended downwardly for being grasped and held by a user, and including a valve stem guide to form a high pressure storage chamber in front of said valve stem guide, and said valve stem guide including a gas passage for communicating with said bore of said barrel and for selectively communicating with said angled port of said loading bolt and for selectively supplying the pressure gas stored in said high pressure storage chamber to said bore of said barrel and to propel said projectile,    a valve stem slidably received in said valve stem guide, and a valve member attached to said valve stem and movable relative to said valve stem guide for engaging with a valve seat of said valve stem guide and for closing and opening said gas passage of said valve stem guide, and for controlling the pressure gas to flow from said high pressure storage chamber of said lower housing to said gas passage of said valve stem guide,    a hammer slidably disposed in said lower housing and located behind said valve stem guide and movable to engage with said valve stem for actuating said valve member to close and to open said gas passage of said valve stem guide,    an actuating means for actuating said hammer to engage with said valve stem,    a link pin secured to said hammer and moved in concert with said hammer and slidably engaged in said channel of said loading bolt, and    a spring biasing member for providing a spring biasing force between said loading bolt and said link pin, and for biasing said loading bolt to resiliently engage with said projectile.    
   
   
       2 . The compressed gas gun as claimed in  claim 1 , wherein said loading bolt includes a cavity communicating with said channel of said loading bolt and separated from said angled port of said loading bolt for receiving said spring biasing member.  
   
   
       3 . The compressed gas gun as claimed in  claim 1 , wherein a follower is slidably engaged in said upper housing, said link pin is secured to said follower and moved in concert with said follower.  
   
   
       4 . The compressed gas gun as claimed in  claim 3 , wherein said follower includes a projection for engaging with said spring biasing member and for positioning said spring biasing member to said follower.  
   
   
       5 . The compressed gas gun as claimed in  claim 1 , wherein said upper housing includes a longitudinal groove for slidably receive said link pin.  
   
   
       6 . The compressed gas gun as claimed in  claim 1 , wherein said link pin includes an enlarged knob extended out of said upper housing for moving said link pin and said hammer relative to said barrel and said upper housing.  
   
   
       7 . The compressed gas gun as claimed in  claim 1 , wherein said lower housing includes an end cap attached to a rear portion thereof, and a guide member extended from said end cap for engaging with and for guiding said hammer to slide toward and away from said valve stem.  
   
   
       8 . The compressed gas gun as claimed in  claim 7 , wherein said actuating means includes a spring member disposed between said end cap and said hammer for actuating said hammer to engage with said valve stem.  
   
   
       9 . The compressed gas gun as claimed in  claim 1 , wherein said lower housing includes an actuating arm pivotally attached to said lower housing and selectively engaged with said hammer for selectively anchoring and latching said hammer to said lower housing in a rearwardly waiting position.  
   
   
       10 . The compressed gas gun as claimed in  claim 1 , wherein said valve stem guide includes a compartment formed therein, and said valve stem includes a piston slidably engaged in said compartment of said valve stem guide for guiding said valve stem to move relative to said valve stem guide.