Gas powered gun
DCFirst Claim
1. A gas powered gun comprising:
- a gun barrel,a cylinder containing a piston rod slidably movable between a loading position in which the leading end of the piston rod is sufficiently withdrawn in the barrel to permit a projectile to be fed into the barrel through an opening in the side thereof, and a firing position in which the piston rod has moved forwardly to cause the leading end of the piston rod to engage the projectile and move the projectile forwardly in the barrel,a trigger operable to cause the piston rod to move from the loading position to the firing position,a pressurized gas supply,said cylinder having first and second chambers through which the piston rod extends, said pressurized gas supply supplying pressurized gas to the first chamber when the piston rod is in the loading position,said piston rod permitting communication between the pressurized gas supply and the first chamber and preventing communication between the first and second chambers when in the loading position, and when in the firing position preventing communication between the pressurized gas supply and the first chamber and permitting communication between the first chamber and the second chamber to cause pressurized gas in the first chamber to pass into the second chamber,said piston rod having a longitudinally extending passage extending from the front and rearwardly along the piston rod to a location where the passage communicates with the exterior of the piston rod, andsaid location communicating with the second chamber when the piston rod is in the firing position to cause pressurized gas to pass from the second chamber into the longitudinally extending passage to the front end of the piston rod to propel the projectile from the gun barrel.
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Accused Products
Abstract
A piston and cylinder assembly for a gas powered gun, has a cylinder containing a piston rod slidably movable between a loading position in which the leading end of the piston rod is in a withdrawn position, and a firing position in which the piston rod has moved forwardly. The cylinder has first and second chambers through which the piston rod extends, the cylinder being connectable to a pressurized gas supply supplying pressurized gas to the first chamber when the piston rod is in the loading position. The piston rod permits communication between the pressurized gas supply and the first chamber and prevents communication between the first and second chambers when in the loading position, and when in the firing position prevents communication between the pressurized gas supply and the first chamber and permits communication between the first chamber and the second chamber to cause pressurized gas in the first chamber to pass into the second chamber. The piston rod has a longitudinally extending passage extending from the front and rearwardly along the piston rod to a location where the passage communicates with the exterior of the piston rod. The location communicates with the second chamber when the piston rod is in the firing position to cause pressurized gas to pass from the second chamber into the longitudinally extending passage to the front end of the piston rod for propelling a projectile from the barrel of a gas powered gun.
354 Citations
13 Claims
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1. A gas powered gun comprising:
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a gun barrel, a cylinder containing a piston rod slidably movable between a loading position in which the leading end of the piston rod is sufficiently withdrawn in the barrel to permit a projectile to be fed into the barrel through an opening in the side thereof, and a firing position in which the piston rod has moved forwardly to cause the leading end of the piston rod to engage the projectile and move the projectile forwardly in the barrel, a trigger operable to cause the piston rod to move from the loading position to the firing position, a pressurized gas supply, said cylinder having first and second chambers through which the piston rod extends, said pressurized gas supply supplying pressurized gas to the first chamber when the piston rod is in the loading position, said piston rod permitting communication between the pressurized gas supply and the first chamber and preventing communication between the first and second chambers when in the loading position, and when in the firing position preventing communication between the pressurized gas supply and the first chamber and permitting communication between the first chamber and the second chamber to cause pressurized gas in the first chamber to pass into the second chamber, said piston rod having a longitudinally extending passage extending from the front and rearwardly along the piston rod to a location where the passage communicates with the exterior of the piston rod, and said location communicating with the second chamber when the piston rod is in the firing position to cause pressurized gas to pass from the second chamber into the longitudinally extending passage to the front end of the piston rod to propel the projectile from the gun barrel. - View Dependent Claims (2, 5, 6, 7)
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- 3. A gun according to claim I wherein the cylinder has a second member separating a gas supply chamber from the first chamber, said second member having a second aperture through which the piston rod passes, and the piston rod having a third portion of smaller cross-section than the second aperture which is located in the second aperture when the piston rod is in the loading position to permit pressurized gas to pass from the gas supply chamber to the first chamber and a fourth portion of larger diameter than the third portion and which is located in and closes the second aperture when the piston rod is in the firing position to prevent pressurized gas from passing from the gas supply chamber into the first chamber.
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8. A piston and cylinder assembly for a gas powered gun, said piston assembly comprising:
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a cylinder containing a piston rod slidably movable between a loading position in which the leading end of the piston rod is in a withdrawn position, and a firing position in which the piston rod has moved forwardly, said cylinder having first and second chambers through which the piston rod extends, said cylinder being connectable to a pressurized gas supply supplying pressurized gas to the first chamber when the piston rod is in the loading position, said piston rod permitting communication between the pressurized gas supply and the first chamber and preventing communication between the first and second chambers when in the loading position, and when in the firing position preventing communication between the pressurized gas supply and the first chamber and permitting communication between the first chamber and the second chamber to cause pressurized gas in the first chamber to pass into the second chamber, said piston rod having a longitudinally extending passage extending from the front and rearwardly along the piston rod to a location where the passage communicates with the exterior of the piston rod, and said location communication with the second chamber when the piston rod is in the firing position to cause pressurized gas to pass from the second chamber into the longitudinally extending passage to the front end of the piston rod for propelling a projectile from the barrel of a gas powered gun. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification