Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A gas powered gun for discharge of projectiles, comprising a valve arranged to exhaust compressed gas from a pressure chamber to thereby discharge a projectile inside a barrel, a hammer arranged to cooperate with the valve to open the valve, a movable spring abutment, a spring arranged between the hammer and the spring abutment and arranged to spring load the hammer in a spring loading direction towards said valve.

Abstract: The invention relates to a gas powered gun for discharge of projectiles, comprising an open-close valve arranged in a rear end of a pressure chamber, and arranged, in its open state, to allow passage of gas from the pressure chamber into a barrel, to thereby discharge a projectile. The open-close valve comprises a valve seat and a valve head provided in one end of an elongated extension member. A hammer is arranged to cooperate with a hammer cooperating member provided at a second end of the elongated extension member. The hammer is arranged between the valve head and the hammer cooperating member, so that, when the hammer is moved in the firing direction into contact with the hammer cooperating member, the hammer cooperating member pulls the valve head out of contact with the valve seat, thereby bringing the open-close valve to its open state.

Abstract: A gas powered gun comprising a valve arranged to exhaust compressed gas from a chamber to thereby discharge a projectile inside a barrel, and a hammer arranged to be cooperate with a valve opening arrangement to thereby open the valve. A spring is arranged between the hammer and a spring abutment for spring loading the hammer. The gun further comprises an adjustment knob turnable around an axis A of rotation, substantially perpendicular to the spring loading direction. The knob has a cam surface having a varying radial distance from the axis of rotation, and a follower, integrated with the spring abutment, is pressed by the spring to rest against the cam surface. When the adjustment knob is turned, the follower will slide against the cam surface and move the follower and the spring abutment in the spring loading direction, to thereby adjust a pretension of the spring.

Abstract: The present invention relates to a gun for using compressed gas to propel an arrow. The gun comprises a hollow barrel adapted to accommodate the arrow. The barrel has an open rear end and an open front end. The gun also includes a cylindrical chamber having a front end through which the barrel extends, a closed rear end, and a gas inlet for connecting the cylindrical chamber to a source of compressed gas. The cylindrical chamber is adapted to hermetically enclose the open rear end of the barrel and is axially movable between a non-firing position where the closed rear end of the cylindrical chamber sealingly engages the open rear end of the barrel, and a firing position where the closed rear end of the cylindrical chamber is displaced from the open rear end of the barrel to allow compressed gas to pass into the barrel via the open rear end of the barrel so as to propel the arrow out the open front end of the barrel. The gun has a simple and robust construction, and has a well-balanced behavior during use.

Abstract: The present invention relates to a gun for using compressed gas to propel an arrow. The gun comprises a hollow barrel adapted to accommodate the arrow. The barrel has an open rear end and an open front end. The gun also includes a cylindrical chamber having a front end through which the barrel extends, a closed rear end, and a gas inlet for connecting the cylindrical chamber to a source of compressed gas. The cylindrical chamber is adapted to hermetically enclose the open rear end of the barrel and is axially movable between a non-firing position where the closed rear end of the cylindrical chamber sealingly engages the open rear end of the barrel, and a firing position where the closed rear end of the cylindrical chamber is displaced from the open rear end of the barrel to allow compressed gas to pass into the barrel via the open rear end of the barrel so as to propel the arrow out the open front end of the barrel. The gun has a simple and robust construction, and has a well-balanced behavior during use.

Abstract: An airgun comprising a valve intended to be in contact with a compressed air cartridge, a barrel, into which a bullet is insertable, and a passageway connecting the valve with the barrel. Moreover, the airgun has element with a plurality of through holes of different diameters, which element is arranged in the passageway so that a part of the element comprising at least one of said holes extends transversely of the passageway. The diameter of the hole or holes which is/are positioned in the passageway thus defines the effective cross-section of the passageway and, consequently, the flow through the passageway. This means that the invention offers a better possibility of controlling the air flow.

Abstract: The invention concerns a pump for compression of gases, such as air, of the type comprising a first cylinder and a second cylinder, a piston dividing said first cylinder into a first chamber located ahead of the piston and a second chamber located behind the piston, the piston and the second cylinder arranged to be displaced jointly relative to the first cylinder. A third chamber is formed between end walls of the cylinders and communicates with said second chamber via at least one opening formed in the jacket wall of the first cylinder. The pump is characterized by an inlet provided in the second end of the second cylinder in order to allow passage of air into a fourth chamber formed between the second end of the second cylinder and the end wall of the first cylinder, said fourth chamber communicating with said third chamber via a through-passage channel, wherein a valve is provided, formed in the end wall of the first cylinder.