Projectile and method for sealing a projectile in a barrel
First Claim
1. A projectile for a barrel assembly containing multiple projectiles, having a spine and an expandable collar surrounding the spine, whereby when in the barrel, upon rearward movement of the spine with respect to the collar, complementary portions of the spine and the collar interact to expand the collar to form a seal with the bore of the barrel.
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Accused Products
Abstract
A weapon (104) including a stock, a barrel assembly (105) slidably mounted on said stock whereby, on discharging said weapon, the barrel assembly (105) slidably recoils relative to said stock, and a damper (107) for decelerating the recoiling barrel assembly, wherein said barrel assembly (105) includes a plurality of projectiles axially disposed within a barrel (108) wherein each of said projectiles is associated with a discrete propellant charge for propelling said projectile from the barrel. Suitably the weapon further includes a breech block (109) which slidably recoils relative to said stock and a further damper (106) for decelerating the recoiling breech block.
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Citations
18 Claims
- 1. A projectile for a barrel assembly containing multiple projectiles, having a spine and an expandable collar surrounding the spine, whereby when in the barrel, upon rearward movement of the spine with respect to the collar, complementary portions of the spine and the collar interact to expand the collar to form a seal with the bore of the barrel.
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7. A method of sealing a projectile in a barrel, including:
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providing the projectile with a spine, a propellant charge and a collar surrounding the spine, applying a force to the spine directed axially down the barrel, and expanding the collar radially on the spine into a sealing contact with the bore of the barrel. - View Dependent Claims (8, 9)
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- 10. A barrel assembly having a barrel with a plurality of projectiles aligned nose to tail for sequential firing from the barrel, each projectile having a spine, a propellant charge and an expandable collar surrounding the spine, each collar having been expanded into sealing contact with the bore of the barrel by rearward movement of the spine with respect to the collar, each collar having a relaxed position on the spine for carrying the collar as the projectile leaves the barrel.
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13. A method of firing projectiles from a barrel, including:
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providing each projectile with a spine and a collar surrounding the spine, aligning the projectiles axially within the barrel with respective propellant charges, exerting a force down the barrel to move the spines rearwards within their respective collars, expanding the collars as a result of the respective movement of spines, forming multiple seals between the collars and the barrel as result of respective expansions, and firing the projectiles sequentially from the barrel. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification