公开(公告)号：US06543174B2

公开(公告)日：2003-04-08

申请号：US10116463

申请日：2002-04-05

Applicant: James Michael O'Dwyer

Inventor： James Michael O'Dwyer

IPC: F41A2100

CPC classification number: F41A35/00 ,  F41A21/28 ,  F42B5/035

Abstract: A barrel assembly (70) comprising a plurality of projectiles (75) axially disposed within a barrel (71) and associated with discrete selectively ignitable propellant charges (74) for propelling the projectiles from the barrel. The essence of the invention is the provision of a pressure relief valve, for example comprised by a port (73) and plug (76), associated with a chamber in which a propellant charge (74) is ignited. The pressure relief valve (73, 76) is designed to prevent catastrophic failure of the barrel (71) by exhausting via a chamber (72) in the event that the barrel is blocked by a projectile and detonation of one or more propellant charges (74) occurs.

公开(公告)号：US06301819B1

公开(公告)日：2001-10-16

申请号：US09590435

申请日：2000-06-09

Applicant: James Michael O'Dwyer

Inventor： James Michael O'Dwyer

IPC: F41A1900

CPC classification number: F41A25/12 ,  F41F1/00 ,  F41F3/045 ,  F42B5/035

Abstract: A barrel assembly (10) having a plurality of projectiles (11) stacked axially within the barrel (12) together with discrete selectively ignitable propellant charges (13) for propelling the projectiles (11) sequentially through the muzzle of the barrel (12) is provided with adjacent projectiles (11) separated from one another by locating means (13) independent of the projectiles. The locating means may be a solid propellant charge (13) located between adjacent projectiles or it may be a rigid casing (122) for the propellant. When subject to an in-barrel load a rear skirt portion of the active projectile (11) is expanded outwardly by the interaction between an inwardly reducing recess (14) formed in the rear end of a projectile and the nested complementary leading portion of the propellant charge (13) or propellant casing (122).

Abstract translation: 具有多个在所述筒体（12）内轴向堆叠的多个射弹（11）的枪管组件（10），以及依次通过枪管（12）的枪口推动射弹（11）的离散选择性可点燃的推进剂装料（13） 设置有通过不依赖于射弹的定位装置（13）彼此分离的相邻射弹（11）。 定位装置可以是位于相邻抛射体之间的固体推进剂装料（13），或者它可以是用于推进剂的刚性壳体（122）。 当受到桶内负载时，有源射弹（11）的后裙部分通过形成在射弹的后端中的向内减小的凹部（14）与推进剂的嵌套互补引导部分之间的相互作用向外扩展 （13）或推进剂套管（122）。