Patent ID: 7210412
Filing Date: 2007-05-01
Classification: F42B

Abstract:
1. A projectile for use with barrel assemblies having a plurality of projectiles axially disposed within a barrel having a bore and a muzzle, and which projectiles are associated with discrete propellant charges for propelling said projectiles sequentially though the muzzle of the barrel, said projectiles comprising: an expandable sleeve for engagement with the bore of the barrel; and a projectile core about which said expandable sleeve is disposed; said expandable sleeve and said projectile core having cooperating surfaces operable by relative movement between the surfaces to deform said expandable sleeve into sealing engagement with the bore of the barrel in response to pressure exerted upon a leading face of the projectile; said expandable sleeve having a solid nose with a continuous leading surface for the projectile and said projectile core extending into a blind passage formed in the rear end of the expandable sleeve; said projectile core further comprising a sub-calibre spacer extending rearward from the blind passage of a leading projectile to abut the solid nose with the continuous leading surface of a trailing projectile permitting projectiles to be axially disposed within said barrel to define a propellant space between said leading projectile and said trailing projectile; and said expandable sleeve being retained about said projectile core during travel to the target.