Rifle barrel nut and methods for coupling firearm components
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F41A-021/48
F41C-023/16
F41A-003/66
출원번호
US-0071892
(2016-03-16)
등록번호
US-9702652
(2017-07-11)
발명자
/ 주소
Jackson, Jason D.
출원인 / 주소
Artisan Defense LLC
대리인 / 주소
ReavesColey PLLC
인용정보
피인용 횟수 :
6인용 특허 :
13
초록▼
An apparatus includes a barrel nut having an inner portion and an outer portion. The inner portion includes a threaded portion and a shoulder. The shoulder is configured to engage a shoulder of a barrel to retain the barrel within a receiver when the threaded portion is coupled to a corresponding th
An apparatus includes a barrel nut having an inner portion and an outer portion. The inner portion includes a threaded portion and a shoulder. The shoulder is configured to engage a shoulder of a barrel to retain the barrel within a receiver when the threaded portion is coupled to a corresponding threaded portion of the receiver. The outer portion defines an outer diameter such that a gas port of the receiver is exposed independent of a rotational position of the barrel nut relative to the receiver. The outer portion includes an engagement surface and a lock surface. The engagement surface is configured to engage a mounting surface of a handguard. The lock surface defines a frusto-conical shape configured to contact a set screw threadedly engaged with the handguard such that rotational movement of the set screw moves the handguard axially relative to the barrel nut.
대표청구항▼
1. An apparatus, comprising: a handguard configured to engage a receiver, the handguard including a first protrusion having a first surface and a second protrusion having a second surface, the first surface and the second surface defining a taper angle therebetween; anda barrel nut having an inner p
1. An apparatus, comprising: a handguard configured to engage a receiver, the handguard including a first protrusion having a first surface and a second protrusion having a second surface, the first surface and the second surface defining a taper angle therebetween; anda barrel nut having an inner portion and an outer portion, the inner portion including a threaded portion and a shoulder, the shoulder configured to engage a shoulder of a barrel to retain the barrel within the receiver when the threaded portion is coupled to a corresponding threaded portion of the receiver, the outer portion of the barrel nut defining an outer diameter such that a gas port of the receiver is exposed independent of a rotational position of the barrel nut relative to the receiver, the outer portion of the barrel nut including an engagement surface and a lock surface, the engagement surface configured to engage a mounting surface of the handguard, the lock surface defining a frusta-conical shape configured to contact a set screw threadedly engaged with the handguard such that rotational movement of the set screw moves the handguard axially relative to the barrel nut,the first surface of the first protrusion configured to engage an outer surface of the receiver on a first side of a receiver rail and the second surface of the second protrusion configured to engage the outer surface of the receiver on a second side of the receiver rail when the mounting surface of the handguard is disposed about the engagement surface of the barrel nut. 2. The apparatus of claim 1, wherein: the engagement surface has a cylindrical shape corresponding to a shape of the mounting surface of the handguard; anda ratio of an axial length of the engagement surface to the outer diameter is at least 0.5. 3. The apparatus of claim 1, wherein the engagement surface is a first engagement surface having a cylindrical shape corresponding to a shape of a first portion of the mounting surface of the handguard, the outer portion having a second engagement surface having a cylindrical shape corresponding to a shape of a second portion of the mounting surface. 4. The apparatus of claim 3, wherein the lock surface is between the first engagement surface and the second engagement surface. 5. The apparatus of claim 3, wherein: the lock surface is between the first engagement surface and the second engagement surface; anda ratio of an overall axial length of the first engagement surface and the second engagement surface to the outer diameter is at least 1.0. 6. The apparatus of claim 1, wherein: the set screw is a first set screw from a plurality of set screws; andthe handguard defines a plurality of threaded bores, a longitudinal centerline of each threaded bore from the plurality of threaded bores intersecting with a longitudinal centerline of the barrel nut,each set screw from the plurality of set screws configured to be threadedly engaged within a corresponding threaded bore from the plurality of threaded bores such that rotational movement of each set screw from the plurality of set screws within the corresponding threaded bore from the plurality of threaded bores moves each set screw into contact with the lock surface. 7. The apparatus of claim 1, wherein the handguard defines a threaded bore within which the set screw is threadedly engaged, a longitudinal centerline of the threaded bore substantially normal to and intersecting a longitudinal centerline of the barrel nut. 8. An apparatus, comprising: a handguard including a receiver engagement portion and a mounting surface, the receiver engagement portion configured to engage an outer surface of a receiver to limit rotation of the handguard relative to the receiver, the mounting surface defining a cylindrical volume, the handguard defining a plurality of threaded bores, each of the plurality of threaded bores configured to receive a set screw of a plurality of set screws; anda barrel nut having an inner portion and an outer portion, the inner portion including a threaded portion and a shoulder, the shoulder configured to engage a shoulder of a barrel to retain the barrel within the receiver when the threaded portion is coupled to a corresponding threaded portion of the receiver, the outer portion including an engagement surface and a lock surface, the engagement surface configured to be disposed within the cylindrical volume and engage the mounting surface of the handguard, the lock surface defining a frusto-conical shape configured to contact each set screw of the plurality of set screws that is threadedly engaged within each threaded bore from the plurality of threaded bores such that rotational movement of each set screw of the plurality of set screws moves the handguard axially relative to the barrel nut, a longitudinal centerline of each threaded bore from the plurality of threaded bores intersecting with a longitudinal centerline of the cylindrical volume. 9. The apparatus of claim 8, wherein the longitudinal centerline of each threaded bore from the plurality of threaded bores is substantially normal to the longitudinal centerline of the cylindrical volume. 10. The apparatus of claim 8, wherein the outer portion of the barrel nut defines an outer diameter such that a gas port of the receiver is exposed independent of a rotational position of the barrel nut relative to the receiver. 11. The apparatus of claim 8, wherein: the engagement surface has a cylindrical shape corresponding to a shape of the mounting surface of the handguard; anda ratio of an axial length of the engagement surface to an outer diameter of the barrel nut is at least 0.5. 12. The apparatus of claim 8, wherein the receiver engagement portion of the handguard includes a first protrusion and a second protrusion, the first protrusion configured to contact a first side of the outer surface of the receiver, the second protrusion configured to contact a second side of the outer surface of the receiver. 13. The apparatus of claim 12, wherein a first contact surface of the first protrusion and a second contact surface of the second protrusion define an included angle of between about 4 degrees and about 30 degrees. 14. A method, comprising: disposing an end portion of a barrel within an opening defined by a receiver;rotating a barrel nut relative to the receiver to couple a threaded portion of the barrel nut to a corresponding threaded portion of the receiver;tightening, after the rotating, the barrel nut such that a shoulder of the barrel nut engages a shoulder of the barrel to retain the barrel within the receiver, the barrel nut being at a rotational position relative to the receiver after the tightening;inserting, without adjusting the rotational position of the barrel nut relative to the receiver, at least one of a gas tube or a rod into a port of the receiver;disposing an end portion of a handguard about an outer engagement surface of the barrel nut such that the handguard covers at least a portion of the barrel and the at least one of the gas tube or the rod; andtightening, after the disposing the end portion of the handguard, a plurality of set screws within a corresponding plurality of threaded bores defined by the handguard such that an end surface of each set screw of the plurality of set screws contacts a frusto-conical lock surface of the barrel nut, causing the handguard to move axially into engagement with the receiver, a longitudinal centerline of each threaded bore from the plurality of threaded bores intersecting with a longitudinal centerline of the barrel nut. 15. The method of claim 14, wherein the disposing the end portion of the handguard is performed without adjusting the rotational position of the barrel nut relative to the receiver. 16. The method of claim 14, wherein the tightening the barrel nut is performed by applying a torque of between about 30 foot-pounds and 80 foot-pounds to the barrel nut. 17. The method of claim 14, wherein the rotational position of the barrel nut elative to the receiver is within a range of 360 degrees. 18. The method of claim 14, wherein the barrel nut defines an outer diameter such that the port of the receiver is exposed independent of the rotational position of the barrel nut relative to the receiver. 19. The apparatus of claim 1, wherein the taper angle is between about 4 degrees and between about 30 degrees. 20. The apparatus of claim 1, wherein the first surface and the second surface each face inwardly toward the outer surface of the receiver. 21. The apparatus of claim 6, wherein the longitudinal centerline of each threaded bore from the plurality of threaded bores is normal to the longitudinal centerline of the barrel nut. 22. The apparatus of claim 8, wherein the longitudinal centerline of each threaded bore from the plurality of threaded bores and the longitudinal centerline of the cylindrical volume form a set screw angle of between about 60 degrees and between about 120 degrees. 23. The apparatus of claim 12, wherein a first contact surface of the first protrusion is configured to engage an outer surface of the receiver on a first side of a receiver rail and a second contact surface of the second protrusion is configured to engage the outer surface of the receiver on a second side of the receiver rail. 24. The method of claim 14, where at least one of the disposing the end portion of the handguard or the tightening the plurality of set screws moves a first engagement surface of the handguard into contact with an outer surface of the receiver on a first side of a receiver rail and moves a second engagement surface of the handguard into contact with the outer surface of the receiver on a second side of the receiver rail, the first engagement surface and the second engagement surface defining a taper angle therebetween.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.