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1. 发明授权

US5317825A Choke assembly for a shotgun 失效
标题翻译：霰弹枪的扼流组件
公开(公告)号：US5317825A
公开(公告)日：1994-06-07
申请号：US29761
申请日：1993-03-11
申请人： Oskar F. Vatterott , Robert K. Scott
发明人： Oskar F. Vatterott , Robert K. Scott
IPC分类号： F41A21/40 , F41H21/40
CPC分类号： F41A21/40
摘要： A choke assembly (10) is attachable to the muzzle end of a shotgun barrel (G) to produce a tightened shot pattern when the shotgun is fired. A shotgun shell includes shot (S) and a wading (W). The wading is spun through the barrel by discharge gases created when the shell is fired, and this spinning motion tends to increase the size of the shot pattern. The choke comprises an elongate hollow tube (12) having an inner end (14) receivable in the muzzle end (M) of the barrel. An inner diameter (D1) of the tube corresponds to that of the barrel at its muzzle end. An outer end (24) of the tube extends beyond the muzzle. The inner diameter of the tube decreases from the inner to the outer end of the tube to effect a choke. The outer end of the tube also has a plurality of longitudinally extending slots (28) formed therein, these being spaced circumferentially about the tube. Discharge gases propelling the wading through the barrel tends to force the wading radially outwardly through the slots. This slows the wading and stops its spinning which, in turn, increases the tightness of the shot pattern. Further, a portion of the discharge gases are also expelled radially outwardly through the slots which reduces the recoil of the shotgun.
摘要翻译：当霰弹枪被射击时，扼流组件（10）可附接到霰弹枪筒（G）的枪口端，以产生紧固的射击模式。霰弹枪壳包括射击（S）和涉水（W）。通过在壳体被烧制时产生的排出气体通过桶旋转牵引，并且这种旋转运动趋于增加喷射图案的尺寸。扼流器包括细长的中空管（12），其具有可接收在枪管的枪口端（M）中的内端（14）。管的内径（D1）对应于枪口在其枪口端的直径（D1）。管的外端（24）延伸超出枪口。管的内径从管的内部到外端减小以产生扼流圈。管的外端还具有形成在其中的多个纵向延伸的狭槽（28），这些槽围绕管周向间隔开。推动通过桶的牵引的排出气体倾向于迫使通过狭槽径向向外的牵引。这样可以减缓牵引，停止旋转，反过来又会增加拍摄模式的紧张度。此外，一部分放电气体也通过狭槽径向向外排出，这减少了霰弹枪的反冲。

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