US 2007/0175465 A1Published application

Compact compressed gas launching device

OwnerMichael Vincent Quinn, Kerry A. Johnsoninventors

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Abstract

A paintball gun comprised of a simplified firing system that eliminates many of the seals and complexity of a typical gun that uses the bolt as a spool type valve. The gun contains a bolt with a gas chamber around it, one seal inside of it, and one seal on its outside. A cylinder rod inside the bolt pushes the bolt forward against a spring using pressurized gas routed via a pilot valve, moving the bolt into the fire position. In the fire position the rear of the bolt moves off the inner seal, allowing compressed gas stored around the bolt to move into and thru the bolt, firing the paintball. Releasing pressure from behind the cylinder rod allows the spring to push the bolt rearward and seal the gas chamber. The simplified mechanism should be more consistent, allow more shots per tank and require less maintenance than other guns.

Claims14

Dependent claims

A gas powered gun comprising:

a gun barrel,
a cylinder containing a piston slidably movable between a loading position in which the leading edge of the bolt is sufficiently withdrawn to permit a projectile to be fed into the cylinder through an opening in the side thereof, and a firing position in which the piston has moved fowardly to cause the leading edge of the piston to engage the projectile and move the projectile fowardly into the barrel,
a trigger operable to cause the piston to move from the loading position to the firing position,
a pressurized gas supply,
said cylinder having a primary chamber thru which the piston extends, said pressurized gas supply supplying pressurized gas to the chamber,
said piston having a longitudinally extending passage extending from the front to the rear of the piston.
said chamber containing a tube that extends from the rear of the chamber into the inside of the piston,
said chamber containing a seal on the forward end that seals against the outside of the piston preventing gas from the chamber flowing around the outside of the piston to the barrel,
said tube containing a seal on its outside that seals against the inside passage of the piston and prevents gas from the primary chamber flowing thru the piston when the piston is in the load position and allows gas to flow thru the piston when the piston is in the fire position,

6 more elements

A piston and cylinder assembly for a gas powered gun, said piston assembly comprising:

a cylinder containing a piston slidably movable between a loading position in which the leading edge of the piston is sufficiently withdrawn to permit a projectile to be fed into the cylinder through an opening in the side thereof, and a firing position in which the piston has moved fowardly to cause the leading edge of the piston to engage the projectile and move the projectile fowardly into an extended portion of the cylinder,
said cylinder having a primary chamber thru which the piston extends,
said chamber being pressurized from a pressurized gas supply,
said piston having a longitudinally extending passage extending from the front to the rear of the piston.
said chamber containing a tube that extends from the rear of the chamber into the inside of the piston,
said chamber containing a seal on the forward end that seals against the outside of the piston preventing gas from the primary chamber flowing around the outside of the bolt to the leading edge of the cylinder or the projectile,
said tube containing a seal on its outside that seals against the inside passage of the piston and prevents gas from the primary chamber flowing thru the piston when the piston is in the load position and allows gas to flow thru the bolt when the bolt is in the fire position,

4 more elements

Dependencies are inferred from the claim text.