Gas-powered gun
A gas-powered gun for discharge of projectiles, comprising a pressure chamber for holding compressed gas, a valve arranged to release compressed gas from the pressure chamber to thereby discharge a projectile provided in a barrel, and a plenum chamber in fluid connection with the pressure chamber. The plenum chamber is formed coaxially around a rear portion of the barrel.
1. A gas-powered gun for discharge of projectiles, comprising:
a barrel;
a pressure chamber for holding compressed gas;
a valve arranged to release compressed gas from the pressure chamber to thereby discharge a projectile provided in the barrel; and
a plenum chamber in fluid connection with the pressure chamber,
wherein the plenum chamber is formed around at least a rear portion of said barrel, and
wherein the pressure chamber is in fluid connection with a source of pressurized air via a pressure regulator, said pressure regulator providing a controlled pressure in the pressure chamber and the plenum chamber.
2. The gas-powered gun according to claim 1 , wherein the plenum is formed coaxially around the barrel.
3. The gas-powered gun according to claim 1 , wherein the plenum is formed by a sleeve surrounding the barrel, said sleeve being sealed in either end by a front sealing and a rear sealing, said rear sealing formed with a passage providing a fluid connection between the plenum and the pressure chamber.
4. The gas-powered gun according to claim 3 , wherein the sleeve is arranged coaxially around the barrel.
5. The gas-powered gun according to claim 1 , wherein the plenum forms an extension of the pressure chamber, and wherein a pressure in both the plenum and the pressure chamber is regulated by a pressure regulator.
6. The gas-powered gun according to claim 1 , wherein a source of pressurized air is a bottle containing compressed air which has been fitted to the gas-powered gun.
7. The gas-powered gun according to claim 1 , further comprising an open-close valve connecting the pressure chamber to a space immediately behind a firing position in the barrel.
8. The gas-powered gun according to claim 7 , further comprising a trigger which is mechanically connected to a spring-loaded hammer, which hammer is configured operates the open-close valve.
9. The gas-powered gun according to claim 7 , wherein the hammer is biased towards the open-close valve by a biasing spring, and is held against the force of the biasing spring by a catch, and wherein the trigger is operable to release the catch.
10. The gas-powered gun according to claim 7 , further comprising a feeder pin arranged in a housing behind the barrel, said feeder pin being operable between a rearwards position, in which it allows a bullet to be inserted in a space in front of the feeder pin, and a forwards position in which it pushes the bullet into the firing position.
11. The gas-powered gun according to claim 3 , wherein walls of the sleeve have a thickness of around 3 mm.
12. A gas-powered gun for discharge of projectiles, comprising:
a barrel;
a pressure chamber for holding compressed gas;
a plenum chamber in fluid connection with the pressure chamber, thereby forming an extension of the pressure chamber;
a pressure regulator connecting the pressure chamber and the plenum chamber with a source of pressurized air, said pressure regulator arranged to maintain a regulated pressure in the pressure chamber and the plenum chamber;
a valve arranged to release compressed gas from the pressure chamber and plenum chamber into the barrel, to thereby discharge a bullet provided in the barrel;
wherein the plenum chamber is formed around at least a rear portion of said barrel.
13. The gas-powered gun according to claim 12 , wherein the plenum is formed coaxially around the barrel.
14. The gas-powered gun according to claim 12 , wherein the plenum is formed by a sleeve surrounding the barrel, said sleeve being sealed in either end by a front sealing and a rear sealing, said rear sealing formed with a passage providing a fluid connection between the plenum and the pressure chamber.
15. The gas-powered gun according to claim 14 , wherein the sleeve is arranged coaxially around the barrel.
16. The gas-powered gun according to claim 12 , wherein the source of pressurized air is a bottle containing compressed air which has been fitted to the gas-powered gun.
17. The gas-powered gun according to claim 12 , further comprising an open-close valve connecting the pressure chamber to a space immediately behind a firing position in the barrel.
18. The gas-powered gun according to claim 17 , further comprising a trigger which is mechanically connected to a spring-loaded hammer, which hammer is configured to operate the open-close valve.
19. The gas-powered gun according to claim 17 , wherein the hammer is biased towards the open-close valve by a biasing spring, and is held against the force of the biasing spring by a catch, and wherein the trigger is operable to release the catch.
20. The gas-powered gun according to claim 17 , further comprising a feeder pin arranged in a housing behind the barrel, said feeder pin being operable between a rearwards position, in which it allows a bullet to be inserted in a space in front of the feeder pin, and a forwards position in which it pushes the bullet into the firing position.
21. The gas-powered gun according to claim 14 , wherein walls of the sleeve have a thickness of around 3 mm.
22. A gas-powered gun for discharge of projectiles, comprising:
a barrel;
a pressure chamber for holding compressed gas;
a valve arranged to release compressed gas from the pressure chamber to thereby discharge a projectile provided in the barrel;
a plenum chamber connected to said pressure chamber via a passage;
a bottle fitted to the gas-powered gun and containing pressurized air, said bottle being a source of pressurized air,
wherein the plenum chamber is formed around at least a rear portion of said barrel.