An arrow gun is provided having a controllable retention force on the arrow. By setting the retention force on the arrow, increased energy from motive compressed gas can be imparted to the arrow. The arrow gun also includes a damping coupling for reducing vibration of an unsupported length of the barrel.

A pneumatic arrow gun has a gun body, an arrow, a positioning sleeve, and a connecting wire. The arrow is for inserting into an air tube of the gun body. The positioning sleeve is temporarily mounted around the air tube, and the arrow is disposed through the positioning sleeve. The connecting wire connects the gun body to the positioning sleeve. Because the positioning sleeve is temporarily mounted around the air tube, the arrow slides forward relative to the positioning sleeve after triggering. When triggering the arrow, the connecting wire naturally dangles. When the arrow detaches from the air tube, the positioning sleeve located at a nock of the arrow due to the sliding of the arrow. Therefore, a rebound of the arrowhead is prevented. The safety and the shooting stability are ensured. Further, the arrow is easily retrieved by the connecting wire.

A pneumatic arrow gun has a gun body, an arrow, a positioning sleeve, and a connecting wire. The arrow is for inserting into an air tube of the gun body. The positioning sleeve is temporarily mounted around the air tube, and the arrow is disposed through the positioning sleeve. The connecting wire connects the gun body to the positioning sleeve. Because the positioning sleeve is temporarily mounted around the air tube, the arrow slides forward relative to the positioning sleeve after triggering. When triggering the arrow, the connecting wire naturally dangles. When the arrow detaches from the air tube, the positioning sleeve located at a nock of the arrow due to the sliding of the arrow. Therefore, a rebound of the arrowhead is prevented. The safety and the shooting stability are ensured. Further, the arrow is easily retrieved by the connecting wire.

The present invention relates to a new type of speargun which uses a continuously-variable-transmission drive system for energy storage and transmission of motion of the ejection device (which may be a piston, a rubber element or a spring) to the spear. The continuously-variable-transmission drive system consists of a shaft (10), the winding drums (8-8.1-9) and the ropes (4), (11). In order to double, triple and quadruple the energy storage to the ejection device, the drive system consists of the respective number of shafts, winding drums and ropes.

The present invention relates to a new type of speargun which uses a continuously-variable-transmission drive system for energy storage and transmission of motion of the ejection device (which may be a piston, a rubber element or a spring) to the spear. The continuously-variable-transmission drive system consists of a shaft (10), the winding drums (8-8.1-9) and the ropes (4), (11). In order to double, triple and quadruple the energy storage to the ejection device, the drive system consists of the respective number of shafts, winding drums and ropes.

An arrow gun is provided having a controllable retention force on the arrow. By setting the retention force on the arrow, increased energy from motive compressed gas can be imparted to the arrow. The arrow gun also includes a damping coupling for reducing vibration of an unsupported length of the barrel.

An arrow gun is provided having a controllable retention force on the arrow. By setting the retention force on the arrow, increased energy from motive compressed gas can be imparted to the arrow. The arrow gun also includes a damping coupling for reducing vibration of an unsupported length of the barrel.

A pneumatic arrow gun has a gun body, an arrow, a positioning sleeve, and a connecting wire. The arrow is for inserting into an air tube of the gun body. The positioning sleeve is temporarily mounted around the air tube, and the arrow is disposed through the positioning sleeve. The connecting wire connects the gun body to the positioning sleeve. Because the positioning sleeve is temporarily mounted around the air tube, the arrow slides forward relative to the positioning sleeve after triggering. When triggering the arrow, the connecting wire naturally dangles. When the arrow detaches from the air tube, the positioning sleeve located at a nock of the arrow due to the sliding of the arrow. Therefore, a rebound of the arrowhead is prevented. The safety and the shooting stability are ensured. Further, the arrow is easily retrieved by the connecting wire.

A pneumatic arrow gun has a gun body, an arrow, a positioning sleeve, and a connecting wire. The arrow is for inserting into an air tube of the gun body. The positioning sleeve is temporarily mounted around the air tube, and the arrow is disposed through the positioning sleeve. The connecting wire connects the gun body to the positioning sleeve. Because the positioning sleeve is temporarily mounted around the air tube, the arrow slides forward relative to the positioning sleeve after triggering. When triggering the arrow, the connecting wire naturally dangles. When the arrow detaches from the air tube, the positioning sleeve located at a nock of the arrow due to the sliding of the arrow. Therefore, a rebound of the arrowhead is prevented. The safety and the shooting stability are ensured. Further, the arrow is easily retrieved by the connecting wire.

A projectile extending along an axis X between two ends, the projectile being positioned in a barrel of substantially cylindrical shape of axis X is provided. The projectile comprises: a hollow part at its center, opening onto a first of the two ends of the projectile to receive a compressed fluid, a plurality of vents passing through the projectile from the hollow part substantially perpendicular to the axis X and with a substantially radial outlet to expel the compressed fluid substantially at a tangent to the projectile. The invention also relates to the barrel and to a launch device comprising a projectile and a barrel.