Air weapon with air compression system having grooves for air transfer
AssigneeUtec B.V.
InventorsHugh F. Taylor, David R. Theobald
Life of this patent
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Abstract
An air weapon air compression system of the type in which air is compressed in a cylinder and expelled through a discharge port, to propel a projectile along the barrel and fire it out of the weapon, by the rapid movement of a piston within the cylinder. Such a system incorporating grooves in one or both of opposed portions of the cylinder and piston, for the transfer of air towards the discharge port during the final compression stage, to enhance the performance of the weapon.
Claims11
In an air weapon provided with a barrel and a discharge port which is adapted to have compressed air expelled therethrough to propel a projectile along said barrel and out of said weapon, an air compression system for compressing said air, said air compression system comprising a cylinder, at least one piston slidably located within said cylinder, said at least one piston having a piston crown and said cylinder having an end wall opposed to said piston crown, said end wall defining said discharge port which opens into said cylinder;
- wherein the improvement comprises shallow groove means in the form of elongate depressions formed in the material of and generally parallel to, the plane of at least one of said opposed piston crown and said end wall, said groove means being open to the cylinder along their length, said groove means including at least one groove which is aligned at one point along the length thereof with said discharge port thereby providing direct communication between said groove and said discharge port to allow for the transfer of air towards the discharge port during a final compression stage of said air in said cylinder by said at least one piston thereby to enhance the performance of said weapon.
In an air weapon providing with a barrel and a discharge port which is adapted to have compressed air expelled therethrough to propel a projectile along said barrel and out of said weapon, an air compression system for compressing said air, said air compression system comprising a cylinder, and at least one piston slidably located within said cylinder, said at least one piston having a piston crown and said cylinder defining said discharge port which opens into said cylinder;
- wherein the improvement comprises shallow groove means in the form of elongate depressions formed in the material of and generally parallel to, the plane of said piston crown, said groove means being open to the cylinder along their length, said groove means including at least one groove which is aligned at one point along the length thereof with said discharge port thereby providing direct communication between said groove and said discharge port to allow for the transfer of air towards the discharge port during a final compression stage of said air in said cylinder by said at least one piston, thereby to enhance the performance of said weapon.
Dependencies are inferred from the claim text.