公开(公告)号：US20170074609A1

公开(公告)日：2017-03-16

申请号：US15050756

申请日：2016-02-23

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Alexander E. Michlin

IPC: F41A3/46 ,  F41A21/48

CPC classification number: F41A3/46 ,  F41A3/26 ,  F41A21/482

Abstract: A breech assembly for an automatic weapon having a barrel extension aligned with and extending outwardly from the rifle bore. The barrel extension has a throughbore aligned with the rifle bore and a non-circular locking recess at a rear end of fee barrel extension. The barrel extension also includes an internal thread in the throughbore. An elongated bolt includes an external thread complementary to the infernal thread hi the barrel extension. The bolt is mounted to a bolt carrier that is longitudinally slidably mounted to the gun body. Longitudinal movement of the bolt carrier simultaneously longitudinally and rotatably drives the bolt so that the bolt thread is threaded into the barrel extension.

Abstract translation: 一种用于自动武器的后枪组件，其具有与步枪孔对准并从其向外延伸的枪管延伸部。 筒形延伸部具有与步枪孔对准的通孔和在收费筒延伸的后端处的非圆形锁定凹部。 枪管延伸部还包括在通孔中的内螺纹。 细长的螺栓包括与枪管延伸部中的地狱螺纹互补的外螺纹。 螺栓安装到纵向可滑动地安装到枪体的螺栓托架上。 螺栓载体的纵向运动同时纵向和可旋转地驱动螺栓，使得螺栓螺纹拧入筒体延伸部。

公开(公告)号：US20170074608A1

公开(公告)日：2017-03-16

申请号：US15051690

申请日：2016-02-24

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Alexander E. Michlin

IPC: F41A3/30 ,  F41C3/00

CPC classification number: F41A3/30 ,  F41C3/00

Abstract: A breech assembly for a gun having a barrel and a barrel extension extending rearwardly from the barrel. The barrel extension includes a throughbore aligned with the barrel as well as a radially inwardly extending annular abutment surface adjacent the rear end of the barrel extension. An elongated bolt is axially slidably received through the barrel extension throughbore when moved to a firing position. An expandable mandrel is mounted to the bolt so that the mandrel surrounds at least a portion of the bolt. An expansion pin is slidably mounted on the bolt and movable between a retracted position m winch the mandrel collapses onto the bolt and allows removal of the bolt from the barrel extension, and an inserted position in which at least a portion of the expansion pin is inserted into the mandrel and deflects the mandrel radially outwardly so that a rear end of the mandrel abuts against the abutment surface and locks the bolt to the barrel extension.

Abstract translation: 枪的后膛组件，其具有从枪管向后延伸的枪管和枪管延伸部。 枪管延伸部包括与枪管对准的通孔以及与枪管延伸部的后端相邻的径向向内延伸的环形邻接表面。 当细长的螺栓移动到击发位置时，其可轴向滑动地通过筒体延伸通孔。 可膨胀心轴安装到螺栓上，使得心轴围绕螺栓的至少一部分。 膨胀销可滑动地安装在螺栓上并且可在缩回位置m绞盘之间移动，心轴将心轴塌陷到螺栓上并且允许从机筒延伸部移除螺栓，以及插入位置，其中膨胀销的至少一部分被插入 进入心轴并使心轴径向向外偏转，使得心轴的后端抵靠邻接表面并将螺栓锁定到筒体延伸部。