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1. 发明申请

US20130025490A1 THREE COMPONENT BULLET WITH CORE RETENTION FEATURE AND METHOD OF MANUFACTURING THE BULLET 有权
标题翻译：具有芯部保持特征的三个组件支架及其制造方法
公开(公告)号：US20130025490A1
公开(公告)日：2013-01-31
申请号：US13190972
申请日：2011-07-26
申请人： Thomas J. BURCZYNSKI
发明人： Thomas J. BURCZYNSKI
IPC分类号： F42B5/02 , F42B12/00
CPC分类号： F42B12/78 , B21K1/025 , B21K25/00 , F42B5/02 , F42B5/025 , F42B5/067 , F42B12/02 , F42B12/74 , F42B14/02 , F42B30/02 , F42B33/00
摘要： A three component bullet with an improved core retention feature and a method of manufacturing the bullet is described including a cylindrical jacket having an open end and a closed end containing a malleable metal core which is forced into a forming die having a bottleneck shaped interior resulting in a bottleneck shaped pre-form wherein the outside diameter of the open-ended forward portion of the jacket is smaller than the outside diameter of its closed rearward portion. The open end of the pre-form may be dropped through or forced through a malleable locking band of appropriate height, diameter and wall thickness. A relatively tight-fitting punch enters the open end of the pre-form generating sufficient axial force against the face of the metal core to radially swell the core and subsequently portions of the jacket fore and aft of the locking band, thereby securing the locking band in place while at the same time producing an inwardly-extending annular band of jacket material which embeds itself into the core material with the result that the core is permanently locked inside the jacket.
摘要翻译：描述了具有改进的芯保持特征的三组件子弹和制造子弹的方法，其包括具有开口端和封闭端的圆柱形护套，其包含可延展的金属芯，该可延展的金属芯被迫进入具有瓶颈形状的内部的成形模具，瓶颈形状的预制件，其中外套的开口前部的外径小于其闭合的后部的外径。预成型件的开口端可以通过或强制通过适当的高度，直径和壁厚的可延展的锁定带。相对紧密的冲头进入预成型件的开口端，产生抵抗金属芯的表面的足够的轴向力，以使芯部和随后的锁定带的前后部分夹紧，从而固定锁定带同时产生向内延伸的护套材料的环形带，其将自身嵌入芯材料中，结果是将芯永久地锁定在护套内。

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