公开(公告)号：US20150247694A1

公开(公告)日：2015-09-03

申请号：US14594171

申请日：2015-01-12

Applicant: Robert S. Randazzo ,  Joseph A. Worley ,  Michael H. Allen

Inventor： Robert S. Randazzo ,  Joseph A. Worley ,  Michael H. Allen

IPC: F41A21/12 ,  F41A21/00

CPC classification number: F41A21/12 ,  F41A5/24 ,  F41A21/28

Abstract: A barrel assembly for use in a firearm that reduces the static bond due to propellant pressure between the cartridge case and the barrel chamber. The barrel assembly has a barrel with a rifled bore, and a chamber for receiving a cartridge therein. The barrel chamber having a throat portion adjacent the rifled bore, and the chamber also having a body portion for receiving the cartridge case therein. The cartridge comprising a cylindrical cartridge case, a bullet engaged within the cartridge case. The cartridge case contains a propellant producing a propellant pressure upon ignition of the propellant. A barrel sleeve configured to receive the barrel within and to positively engage the barrel. A recess is formed between the barrel and barrel sleeve, forming a propellant pressure interconnect passage. The barrel has supply ports passing from the chamber throat to the propellant pressure interconnect passage, and the release ports passing from the propellant pressure interconnect passage, and into the chamber body. Upon ignition of the propellant, the bullet is forced by propellant pressure out of the cartridge case and into the rifled bore of the barrel. The propellant pressure passes into the supply ports, into the propellant pressure interconnect passage, and into the release ports. The propellant pressure is then exerted upon the exterior of the cylindrical cartridge case. The static bond due to propellant pressure between the cartridge case and the barrel chamber is reduced and more energy is made available to cycle the firearm mechanism.

Abstract translation: 用于枪支的桶组件，其减小由于盒壳体和筒室之间的推进剂压力引起的静态粘结。 枪管组件具有带有膛孔的枪管和用于在其中容纳药筒的腔室。 枪管腔室具有邻近膛孔的喉部，并且腔室还具有用于在其中容纳盒壳体的主体部分。 该盒包括圆柱形盒壳体，接合在盒壳体内的子弹。 药筒盒包含在推进剂点燃时产生推进剂压力的推进剂。 桶套筒，其构造成在所述桶内容纳桶并使其牢固地接合。 在筒和筒套之间形成凹部，形成推进剂压力互连通道。 枪管具有从腔室喉部到推进剂压力互连通道的供给口，以及从推进剂压力互连通道流入腔体的释放口。 在推进剂点燃时，子弹被推进剂压力挤出盒壳并进入筒的膛孔内。 推进剂压力进入供应口，进入推进剂压力互连通道，并进入释放口。 然后将推进剂压力施加到圆柱形盒壳体的外部。 由于盒壳和筒室之间的推进剂压力导致的静态结合减少，并且更多的能量可用于循环枪械机构。

公开(公告)号：US09395135B2

公开(公告)日：2016-07-19

申请号：US14594171

申请日：2015-01-12

Applicant: Robert S. Randazzo ,  Joseph A. Worley ,  Michael H. Allen

Inventor： Robert S. Randazzo ,  Joseph A. Worley ,  Michael H. Allen

IPC: F41A21/12 ,  F41A5/24 ,  F41A21/28

CPC classification number: F41A21/12 ,  F41A5/24 ,  F41A21/28

Abstract: A barrel assembly for use in a firearm that reduces the static bond due to propellant pressure between the cartridge case and the barrel chamber. The barrel assembly has a barrel with a rifled bore, and a chamber for receiving a cartridge therein. The barrel chamber having a throat portion adjacent the rifled bore, and the chamber also having a body portion for receiving the cartridge case therein. The cartridge comprising a cylindrical cartridge case, a bullet engaged within the cartridge case. The cartridge case contains a propellant producing a propellant pressure upon ignition of the propellant. A barrel sleeve configured to receive the barrel within and to positively engage the barrel. A recess is formed between the barrel and barrel sleeve, forming a propellant pressure interconnect passage. The barrel has supply ports passing from the chamber throat to the propellant pressure interconnect passage, and the release ports passing from the propellant pressure interconnect passage, and into the chamber body. Upon ignition of the propellant, the bullet is forced by propellant pressure out of the cartridge case and into the rifled bore of the barrel. The propellant pressure passes into the supply ports, into the propellant pressure interconnect passage, and into the release ports. The propellant pressure is then exerted upon the exterior of the cylindrical cartridge case. The static bond due to propellant pressure between the cartridge case and the barrel chamber is reduced and more energy is made available to cycle the firearm mechanism.

Abstract translation: 用于枪支的桶组件，其减小由于盒壳体和筒室之间的推进剂压力引起的静态粘结。 枪管组件具有带有膛孔的枪管和用于在其中容纳药筒的腔室。 枪管腔室具有邻近膛孔的喉部，并且腔室还具有用于在其中容纳盒壳体的主体部分。 该盒包括圆柱形盒壳体，接合在盒壳体内的子弹。 药筒盒包含在推进剂点燃时产生推进剂压力的推进剂。 桶套筒，其构造成在所述桶内容纳桶并使其牢固地接合。 在筒和筒套之间形成凹部，形成推进剂压力互连通道。 枪管具有从腔室喉部到推进剂压力互连通道的供给口，以及从推进剂压力互连通道流入腔体的释放口。 在推进剂点燃时，子弹被推进剂压力挤出盒壳并进入筒的膛孔内。 推进剂压力进入供应口，进入推进剂压力互连通道，并进入释放口。 然后将推进剂压力施加到圆柱形盒壳体的外部。 由于盒壳和筒室之间的推进剂压力导致的静态结合减少，并且更多的能量可用于循环枪械机构。

公开(公告)号：US20230204315A1

公开(公告)日：2023-06-29

申请号：US17563076

申请日：2021-12-28

Applicant: Robert S. Randazzo ,  Michael Allyn Miller ,  Richard Brady Olsen

Inventor： Robert S. Randazzo ,  Michael Allyn Miller ,  Richard Brady Olsen

IPC: F41A21/18

CPC classification number: F41A21/18

Abstract: A barrel for use in a firearm optimized to fire subsonic ammunition with high precision. The barrel groove diameter being within 0.0003 inch of the nominal bullet diameter and the barrel has at least 8 rifled grooves. Each of the plurality of rifling grooves has a sidewall formed from the bore diameter to the groove diameter, wherein the sidewalls formed are substantially parallel and the depth of each of the rifling grooves is shallow. The bullet is obturated as the bullet is forced down the bore. The plurality of shallow barrel grooves forming a plurality of raised lands upon the bullet. The obturated bullet having at least 50% lands formed around the circumference of the bullet body. The buffeting effect upon the bullet in flight by a transition shock wave upon the raised bullet lands is reduced by the plurality of bullet lands and the reduced height of each of the plurality of bullet lands.

公开(公告)号：US11668539B1

公开(公告)日：2023-06-06

申请号：US17563076

申请日：2021-12-28

Applicant: Robert S. Randazzo ,  Michael Allyn Miller ,  Richard Brady Olsen

Inventor： Robert S. Randazzo ,  Michael Allyn Miller ,  Richard Brady Olsen

IPC: F41A21/18

CPC classification number: F41A21/18

Abstract: A barrel for use in a firearm optimized to fire subsonic ammunition with high precision. The barrel groove diameter being within .0003 inch of the nominal bullet diameter and the barrel has at least 8 rifled grooves. Each of the plurality of rifling grooves has a sidewall formed from the bore diameter to the groove diameter, wherein the sidewalls formed are substantially parallel and the depth of each of the rifling grooves is shallow. The bullet is obturated as the bullet is forced down the bore. The plurality of shallow barrel grooves forming a plurality of raised lands upon the bullet. The obturated bullet having at least 50% lands formed around the circumference of the bullet body. The buffeting effect upon the bullet in flight by a transition shock wave upon the raised bullet lands is reduced by the plurality of bullet lands and the reduced height of each of the plurality of bullet lands.

公开(公告)号：US06598333B1

公开(公告)日：2003-07-29

申请号：US10167670

申请日：2002-06-11

Applicant: Robert S. Randazzo ,  David R. Brewer

Inventor： Robert S. Randazzo ,  David R. Brewer

IPC: F41G138

CPC classification number: F41G11/003

Abstract: A scope mounting system includes a one or two-piece base and a plurality of scope support assemblies. Mating portions of the base and scope support assemblies have parallel v-notches engaged with parallel flat lands to set the position of each support assembly relative to the sighting direction of a weapon to which the base is attached. The “flat land to v-notch” interengagement guarantees that the flat portions of all v-notches will engage one another to prevent movement along the weapon's sighting direction. Each scope support assembly clamps to the base in a way that prevents movement thereof in a two-dimensional plan perpendicular to the weapon's sighting direction.

Abstract translation: 镜架安装系统包括一个或两个底座和多个镜架支撑组件。 基座和镜架支撑组件的配合部分具有平行的V形凹口，与平行的平坦平台接合，以便相对于基座所附着的武器的瞄准方向设定每个支撑组件的位置。 “平坦的土地到v口”的相互联系保证所有v型槽口的平坦部分将彼此接合，以防止沿着武器的瞄准方向的移动。 每个示波器支撑组件以防止其在垂直于武器的瞄准方向的二维平面中的运动的方式夹紧到基座。