TECHNICAL FIELD
The invention related to the field of firearms and may be utilized in firearm with detachable barrel.
BACKGROUND OF THE INVENTION
All known prior art solutions for clamping the barrel in the receiver, such as the U.S. Pat. No. 3,731,418A; 3,834,053A; US 20050229463A1; US 20120073179A1, the disadvantage of these designs is that the installation of optical sights is possible only on the receiver, which requires the manufacturer of a receiver from durable materials.
DISCLOSURE OF INVENTION
The present invention allows to transfer the stress from the installation of sights from the receiver to the barrel or its breech, which will reduce the weight of the firearm and the production cost.
The task is achieved by the fact that the firearm comprising the receiver with the barrel attachment unit in the form of a clamp, the barrel and the base for the sighting devices, has in the upper part holes through which the base for the sighting devices is mounted directly on the barrel, on which, in turn, the sights are mounted.
BRIEF DESCRIPTION OF THE DRAWINGS
The essence of the invention is explained by sketches, where:
On FIG. 1—the appearance of the firearm and exploding view with the proposed barrel attachment unit;
On FIG. 2—the appearance of the firearm with the proposed barrel attachment unit, cross-sections along A-A, G-G, H-H the partial view J;
On FIG. 3—the appearance of the barrel and the partial view A;
On FIG. 4—the appearance of the receiver, cross-sections along A-A, B-B, C-C;
On FIG. 5—the appearance of the sight base, cross-section along A-A;
On FIG. 6—the appearance of the firearm and exploding view with the proposed barrel attachment unit, in variant when barrel attachment unit has more than one hole it upper part;
On FIG. 7—the appearance of the firearm with the proposed barrel attachment unit, in variant when barrel attachment unit has more than one hole it upper part and cross-sections along B-B, C-C, D-D the partial view E;
On FIG. 8—the appearance of the receiver with the proposed barrel attachment unit, in variant when barrel attachment unit has more than one hole it upper part and cross-sections along A-A, B-B, C-C;
On FIG. 9—the appearance of the sight base for proposed barrel attachment unit, in variant when one of the supporting lugs of scope base has a groove;
On FIG. 10—the appearance of the firearm with the proposed barrel attachment unit, in variant when one of the supporting lugs of sight base has a groove, cross-section along A-A, the partial view B;
On FIG. 11—the appearance of the sight base in variant, when one of the supporting lugs of scope base has a protrusion;
On FIG. 12—the appearance of the firearm with the proposed barrel attachment unit, in variant when one of the supporting lugs of sight base has a protrusion, cross-section along A-A, the partial view B;
On FIG. 13—the appearance of the receiver in variant, when the proposed barrel attachment unit comprises extended section serves as hand guard, cross-section along A-A;
On FIG. 14—the appearance of the firearm in variant, when the proposed barrel attachment unit comprises extended section, cross-section along A-A, partial view C;
On FIG. 15—the appearance of the firearm in variant, when receiver has inside a stop for stopping the breach end of barrel;
On FIG. 16—the appearance of the firearm and exploding view with the proposed barrel attachment unit, in variant when firearm has configuration “bullpup”;
On FIG. 17—the appearance of the firearm with the proposed barrel attachment unit, in variant when firearm has configuration “bullpup”, cross-section along A-A, partial views B, C;
On FIG. 18—the appearance of the receiver with the proposed barrel attachment unit, in variant when firearm has configuration “bullpup”, cross-sections along A-A, B-B, C-C;
On FIG. 19—the appearance of the firearm with the proposed barrel attachment unit, in variant when firearm has configuration bullpup when receiver inside has a stop for stopping the breach end of barrel, cross-section along A-A, partial views B, C;
On FIG. 20—the appearance of the receiver for firearm with the proposed barrel attachment unit, in variant when firearm has configuration bullpup and receiver inside has a stop for stopping the breach end of barrel, cross-section along C-C, partial view D.
BEST MODE FOR CARRYING OUT THE INVENTION
Firearms 70 with the proposed barrel attachment unit (FIG. 1, FIG. 2) comprising the barrel 1 (FIG. 3), the receiver (FIG. 4) and the base of sighting devices (FIG. 5). Barrel 1 (FIG. 3) comprising the breech 1.1 with the breech end 1.2 and the rim 1.3. The proposed barrel attachment unit 3 (FIG. 4) of the receiver 2, having the form of a clamp, has a hole 3.1 in the upper part and the end 3.2.
The base of the sighting devices 4 (FIG. 5) is used to install the sights and has supporting lugs 4.1, as well as holes 4.2 for the passage of bolts. The barrel 1 (FIG. 2) is inserted into the barrel attachment unit 3, of the receiver 2, until the rim 1.3 stopped at the end 3.2. When tightening the bolts 6 and nuts 7, the breech end 1.1 is fixed in the barrel attachment unit 3. The sight base 4 is mounted on the barrel 1 in such a way that one of the supporting lugs 4.1 of the sight base passes through the hole 3.1 of the barrel attachment unit 3. Fixing of the sight base 4 on the breech 1.1 of the barrel 1 is carried out with screws 5.
In variant of the proposed barrel attachment unit, the receiver 8 (FIG. 8) is similar in design to the receiver 2 (FIG. 4) with the difference that the barrel attachment unit 9 in the upper part comprising more than one hole 9.1.
In this variant the barrel 1 (FIG. 7) is inserted into the barrel attachment unit 9 of the receiver 8 until it stops by rim 1.3 at the end 9.2. When tightening the bolts 6 and nuts 7, the breech 1.1 fixes in into the barrel attachment unit 9. The sight base is mounted on the barrel so that the lugs 4.1 pass through the holes 9.1. The sight base is fixing on the barrel by screws 5.
In variant, when the sight base 4 has a groove 4.3 (FIG. 9) in the supporting lug 4.1. In this case, the installation of the barrel 1 (FIG. 10) in the proposed barrel attachment unit 3 is similar to the installation shown in FIG. 2, with the difference that when the sight base 4 (FIG. 10) is mounted, the rim of the barrel 1.3 enters in to the groove 4.3.
In variant, when the sight base 4 (FIG. 11) has a protrusion 4.4 on the supporting lug 4.1. In this case, the installation of the barrel 1 (FIG. 12) in the barrel attachment unit 3 is similar to the installation shown in FIG. 2, with the difference that when the sight base 4 (FIG. 12) is mounted, the protrusion 4.4 stopped on the breech end 1.2.
The receiver 11 (FIG. 13) comprising a variant of the proposed barrel attachment unit 12, different from that shown in FIG. 8, by the presence of an elongated part 13, working like hand guard. The barrel 1 (FIG. 14) is installed in the barrel attachment unit 12 until the rim 1.3 stops on the end 12.2 and is fixing by the screws 6. The sight base 4 passes its supporting lugs 4.1 through the holes 12.1 and is fixed on the barrel with screws 5. An elongated section 13 of the barrel attachment unit 3 surrounds the barrel 1 and performs the function of the hand guard.
A receiver 20 (FIG. 15), in the variant of the proposed barrel attachment unit 21 (FIG. 15), when in contrast to the embodiment shown in FIG. 2, barrel 1 (FIG. 15) stopping his breech end 1.2 at the stop 24.
A variant of the firearm 100 (FIG. 16, FIG. 17), comprising a variant of the proposed barrel attachment unit 31 (FIG. 18) and made in the “bullpup” configuration. The barrel 1 (FIG. 17) is install in the barrel attachment unit 31 of the receiver 30 until the rim 1.3 stopped on the end 31.2. The barrel 1 in the barrel attachment unit 31 is tightened by means of screws 6. The sight base is mounted with its supporting lugs 4.1, passing through the holes 31.1, directly onto the barrel and tightened by means of screws 5.
Firearm 100 (FIG. 19), performed according to the “bullpup” configuration, comprising a receiver 50 (FIG. 20) with a variant of the proposed barrel attachment unit 51. The barrel 1 (FIG. 19) is installed in the barrel attachment unit 51 until the breech end 1.2 is stopped on the stop 51.2. The fixing of the barrel 1 in the barrel attachment unit 51 is by means of screws 6. The sight base is mounted with its supporting lugs 4.1, passing through the holes 51.1, directly onto the barrel and fastened by means of screws 5.
Patent Application
20190301827
