Barrel attachment system for rifle

Abstract

A system for securing a barrel to a receiver of a rifle includes a barrel extension and a locking wedge. The barrel extension receives threads on the barrel and has a protuberance. The locking wedge is secured in an aperture in the receiver by a fastener. The locking wedge has a side parallel to the aperture, and a cam side disposed at an angle. The locking wedge is movable in a direction perpendicular to the barrel axis. The cam side is disposed against the protuberance. Tightening the fastener causes the cam side of the locking wedge to urge the protuberance of the barrel extension along the barrel axis in a direction away from the muzzle end of the barrel into the receiver.

Claims

1. A system for securing a barrel to a receiver of a rifle, the barrel having a barrel axis, a muzzle end and a receiver end, the system comprising: (a) a barrel extension having a barrel end and a receiver end, said barrel extension having internal threads at its barrel end for receiving external threads on the barrel and a protuberance extending from a lower side of the barrel extension; (b) a locking wedge slidably secured in an aperture in the receiver by a threaded fastener, the locking wedge having a central aperture, a first side parallel to the central aperture, and a cam side opposite the first side and disposed at an angle relative to the first side, the locking wedge movable along an axis of the threaded fastener in a direction perpendicular to the barrel axis by rotating the threaded fastener, the cam side disposed against the protuberance; (c) wherein tightening the threaded fastener into the receiver causes the cam side of the locking wedge to urge the protuberance of the barrel extension along the barrel axis in a direction away from the muzzle end of the barrel and into the receiver; (d) wherein loosening the threaded fastener causes the cam side of the locking wedge to allow the barrel extension to move along the barrel axis in a direction toward the muzzle end of the barrel; whereby tightening the threaded fastener urges the barrel extension into the receiver, seating and aligning the barrel within the receiver.

2. The system for securing a barrel to a receiver of a rifle of claim 1, wherein the barrel extension is tapered at the receiver end to mate with a corresponding tapered aperture in the receiver.

3. The system for securing a barrel to a receiver of a rifle of claim 1, including a barrel extension locking nut, said locking nut having internal threads for receiving the external threads on the barrel, said locking nut disposed adjacent the barrel end of the barrel extension.

4. The system for securing a barrel to a receiver of a rifle of claim 3, wherein the receiver fully covers the locking nut such that the locking nut is hidden within the receiver.

5. A system for securing a barrel to a receiver of a rifle, the barrel having a barrel axis, a muzzle end and a receiver end, the system comprising: (a) a barrel extension having a barrel end and a receiver end, said barrel extension having internal threads at its barrel end for receiving external threads on the barrel and a protuberance extending from a lower side of the barrel extension, said barrel extension being tapered at the receiver end to mate with a corresponding tapered aperture in the receiver; (b) a locking wedge slidably secured in an aperture in the receiver by a threaded fastener, the locking wedge having a central aperture, a first side parallel to the central aperture, and a cam side opposite the first side and disposed at an angle relative to an axis of the central aperture, the locking wedge movable in a direction along an axis of the threaded fastener perpendicular to the barrel axis, the cam side disposed against the protuberance; (c) wherein tightening the threaded fastener into the receiver causes the cam side of the locking wedge to urge the protuberance of the barrel extension along the barrel axis in a direction away from the muzzle end of the barrel and into the receiver; (d) wherein loosening the threaded fastener causes the cam side of the locking wedge to allow the barrel extension to move along the barrel axis in a direction toward the muzzle end of the barrel; whereby tightening the threaded fastener urges the barrel extension into the receiver, seating and aligning the barrel within the receiver.

6. The system for securing a barrel to a receiver of a rifle of claim 1, including a barrel extension locking nut, said locking nut having internal threads for receiving the external threads on the barrel, said locking nut disposed adjacent the barrel end of the barrel extension, and wherein the receiver fully covers the locking nut such that the locking nut is hidden within the receiver.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a side elevation view of a system for securing a barrel to a receiver in a rifle in accordance with an exemplary embodiment of the present invention.

(2) FIG. 2 is a cross-sectional view of the system for securing a barrel to a receiver in a rifle of FIG. 1.

(3) FIG. 3 is an enlarged cross-sectional view of the system for securing a barrel to a receiver in a rifle of FIG. 1, taken at callout FIG. 3 of FIG. 2.

(4) FIG. 4 is a cross-sectional view of the system for securing a barrel to a receiver of FIG. 1, taken at callouts FIG. 4-FIG. 4 of FIG. 3.

(5) FIG. 5 is a cross-sectional view of the system for securing a barrel to a receiver of FIG. 1, taken at callouts FIG. 5-FIG. 5 of FIG. 4.

(6) FIG. 6 is an example of a bolt action rifle having a system for securing a barrel to a receiver of FIG. 1.

(7) FIG. 7 is an exploded isometric view of the bolt action rifle having a system for securing a barrel to a receiver.

(8) FIG. 8A is a front isometric view of a barrel extension for the system for securing a barrel to a receiver in a rifle of FIG. 1.

(9) FIG. 8B is a rear isometric view of the barrel extension of FIG. 8A.

(10) FIG. 9A is a front isometric view of a locking wedge for the system for securing a barrel to a receiver in a rifle of FIG. 1.

(11) FIG. 9B is top, plan view of the locking wedge of FIG. 9A.

(12) FIG. 10 is front isometric view of a barrel extension locking nut for the system for securing a barrel to a receiver in a rifle of FIG. 1.

DETAILED DESCRIPTION

(13) Referring now to the drawing figures wherein like reference numbers refer to like elements throughout the several views, there is shown in FIGS. 1-5 a system for securing a barrel to a receiver of a rifle 10 in accordance with an exemplary embodiment of the present invention. As shown in FIG. 6 and in the exploded view of FIG. 7, the system 10 is used on a rifle 12, for example a bolt action rifle. The rifle 12 generally includes a barrel 14 having a barrel axis X, with a muzzle end 16 and a receiver end 18 and a receiver 20 that houses the hammer, bolt, and firing mechanism of the rifle.

(14) The system can best be seen in FIGS. 2-5 and further includes a barrel extension 22 having a barrel end 24 and a receiver end 26 for mating the barrel 14 to the receiver 20. See FIGS. 8A and 8B. The barrel extension 22 has internal threads 28 at its barrel end 24 for receiving external threads 30 on the receiver end 18 of the barrel 14. A protuberance 32 extends from a lower side 34 of the barrel extension 22.

(15) A barrel extension locking nut 36 is provided having internal threads 38 for receiving the external threads 30 on the receiver end 18 of the barrel 14. See FIG. 10. The locking nut 36 is disposed adjacent to the barrel end 24 of the barrel extension 22 and provides for setting of head space. Alternatively, a shouldered attachment or a pinned attachment, as known, may be used.

(16) A locking wedge 40 is disposed in an aperture 42 in the receiver 20 by a threaded fastener 44. See FIGS. 9A and 9B. The locking wedge 40 has a central aperture 46, a first side 48 parallel to the central aperture 46, and a cam side 50 opposite the first side 48 and disposed at a small angle Z relative to the first side 48. The locking wedge 40 is movable in a direction perpendicular to the barrel axis X along axis Y.

(17) Tightening the threaded fastener 44, e.g., by turning it clockwise, into the receiver 20 causes the cam side 50 of the locking wedge 40 to urge the protuberance 32 of the barrel extension 22 along the barrel axis X in a direction away from the muzzle end 16 of the barrel 14 and into the receiver 20. Loosening the threaded fastener 44, e.g., by turning it counterclockise, causes the cam side 50 of the locking wedge 40 to free the barrel extension 22, allowing it to move along the barrel axis X in a direction toward the muzzle end 16 of the barrel 14. Tightening the threaded fastener 44 urges the barrel extension 22 into the receiver 20, seating and aligning the barrel 14 within the receiver 20.

(18) The barrel extension 22 may be have a taper 52 at its receiver end 26 to mate with a corresponding tapered aperture 54 in the receiver 20. Preferably, the receiver 20 fully covers the barrel extension 22 such that the barrel extension 22 is hidden within the receiver 20.

(19) It is to be understood that the disclosure teaches just one example of the illustrative embodiment and that many variations of the invention can easily be devised by those skilled in the art after reading this disclosure and that the scope of the present invention is to be determined by the following claims.