High performance gun barrel
First Claim
Patent Images
1. For accelerating a projectile advanced by a propellant to an exit velocity, a barrel comprising:
- an inner tube with a longitudinal axis and a length and having a wall with an external surface and an internal surface to define a bore, said internal surface sized to make obturating contact with a projectile along said length, said inner tube having a muzzle and an aperture formed in said wall proximate to and spaced inwardly from said muzzle in fluid communication with said bore; and
an outer tube sealing said inner tube therein to form a chamber in fluid communication with said aperture in said inner tube, said aperture being positioned to receive said propellant after said projectile achieves substantially the exit velocity.
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Abstract
A barrel has an inner tube with a chamber at one end and a muzzle at the other. The barrel guides projectiles such as bullets as they are accelerated by a propellant. The inner tube has an aperture near its front end. Propellant passes through the aperture into a propellant chamber formed by the inner tube and an outer tube positioned about and secured to the inner tube. A plurality of ribs extend between the inner and outer tubes. Also, a coolant may be inserted into the propellant chamber to escape through the muzzle with the propellant after the projectile exits the muzzle.
76 Citations
26 Claims
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1. For accelerating a projectile advanced by a propellant to an exit velocity, a barrel comprising:
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an inner tube with a longitudinal axis and a length and having a wall with an external surface and an internal surface to define a bore, said internal surface sized to make obturating contact with a projectile along said length, said inner tube having a muzzle and an aperture formed in said wall proximate to and spaced inwardly from said muzzle in fluid communication with said bore; and an outer tube sealing said inner tube therein to form a chamber in fluid communication with said aperture in said inner tube, said aperture being positioned to receive said propellant after said projectile achieves substantially the exit velocity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A gun barrel for accelerating to an exit velocity a bullet in obturation of a pressurized fluid comprising:
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an internal tube having an external surface, a longitudinal axis, a length, a bore therethrough having a generally cylindrical internal surface sized to make obturating contact with said bullet along the entire said length and defining a generally cylindrical wall separating said internal and external surfaces, a breech end having access proximal thereto for introducing said bullet into said bore, a muzzle end having a port therein in fluid communication with said bore for discharge of said bullet from said bore, and an aperture in said wall proximal said muzzle end positioned to receive and discharge said propellant after said bullet substantially achieves the exit velocity; an outer tube disposed generally coaxially around said internal tube, said outer tube being coupled to said internal tube proximal said muzzle end and said breech end to seal said internal tube therein, and said outer tube being spaced apart from said internal tube between said muzzle end and said breech end; and an enclosed chamber comprising a volume between said spaced apart internal tube and outer tube sealed with respect to the atmosphere, said chamber being in fluid communication with said aperture in said internal tube for receiving a substantial portion of said pressurized fluid upon traverse of said aperture by said bullet. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification