Semi-automatic rifle

Abstract

The invention relates to a semi-automatic rifle (1) for sporting use, comprising: i) a main body (2); ii) a barrel group (3) comprising a barrel (30) engaged at one end with the main body (2), a support ring (35) engaged at the bottom of the barrel ( 30 ), and at least one hole (300) extending transversely from the barrel (30) to the support ring (35) to allow the outflow of gases; iii) a magazine tube group (4) engaged at one end with the main body (2) and comprising a gas intake cylinder device (5) mountable to the support ring (35) comprising a hollow cylinder (51) insertable in a first direction and a fastening ferrule (52) insertable in a second direction, wherein the hollow cylinder (51) and the fastening ferrule (52) are mutually engageable to engage with the support ring (5).

Description

SEMI-AUTOMATIC RIFLEDESCRIPTION

[0001] The present invention relates to a semiautomatic rifle.

[0002] In particular, by "semi-automatic rifle" is meant a semi-automatic rifle for sporting use, for example for hunting.

[0003] In known embodiments, semi-automatic rifles comprise a main body, also known as a receiver, in which or on which specific components are housed or engaged, such as those of the firing mechanism or the trigger assembly .

[0004] In particular, the semi-automatic rifle object of the present invention is of the type known as "gas- operated". In such a semi-automatic rifle, the energy of the gases resulting from the explosion of the gunpowder is exploited: a part of said gases is indeed tapped from the barrel through one or more holes in order to generate an expansion inside a magazine tube group comprising a closed cylinder and a sliding piston. The thrust of the piston in turn generates an impulse that re-cocks the moving masses, ejects the shell casing and loads the new cartridge .

[0005] In known solutions of semi-automatic rifles, the interaction and geometry of the barrel group and the magazine tube group prove to be particularly complex, requiring specific manufacturing and maintenance operations .

[0006] The object of the present invention is to provide an alternative solution for a semi-automatic rifle to the solutions of the prior art, suitable for allowing a simple and effective interaction between the barrel group and the magazine tube group.

[0007] This object is achieved by means of the semiautomatic rifle according to claim 1. The dependent claims seek protection for further features and entail further technical advantages.

[0008] In addition, further features and advantages of the invention will appear from the description below of its preferred embodiments, given by way of non-limiting example, with reference to the accompanying figures, in which :

[0009] - Figure 1 shows a perspective view of a semiautomatic rifle according to the present invention;

[0010] - Figure 2 shows a partially sectioned side view of the semi-automatic rifle of figure 1;

[0011] - Figure 2a represents an enlarged view of aregion of figure 2;

[0012] - Figure 3 is an exploded perspective view with separate parts of a barrel group and of a gas intake cylinder device included in the rifle of figure 1;

[0013] - Figure 4 is a bottom view of the barrel group and of the cylinder device, shown assembled in figure 3, ;

[0014] - Figure 5 is a cross-sectional view of figure 4.

[0015] With reference to the attached figures, the number 1 denotes, in its entirety, a semi-automatic rifle in accordance with the present invention.

[0016] Preferably, said semi-automatic rifle 1 is a semi-automatic rifle for sporting use, for example for hunting .

[0017] In accordance with the present invention, the semi-automatic rifle 1 comprises a main body 2. Preferably said main body 2 is also known as receiver.

[0018] Said main body 2 houses or supports all the various components suitable for performing the firing action .

[0019] The semi-automatic rifle 1 comprises a barrel group 3, which extends longitudinally from the main body

[0020] Said barrel group 3 extends along a barrel axis X-X.

[0021] Moreover, the barrel group 3 is engaged to the main body 2.

[0022] According to the present invention, the barrel group 3 comprises a barrel 30 which extends along the barrel axis X-X.

[0023] Said barrel 30 is engaged at one end with the main body 2. The other end is the muzzle of the barrel 30 and of the semi-automatic rifle 1.

[0024] Preferably, said barrel 30 is made of a metallic material, for example steel alloy.

[0025] Moreover, the semi-automatic rifle 1 comprises a magazine tube group 4, which extends longitudinally from the main body 2.

[0026] The magazine tube group 4 extends along a cylinder axis C-C.

[0027] Said cylinder axis C-C is substantially parallel to the barrel axis X-X.

[0028] Returning to the barrel group 3, this comprises a support ring 35 engaged at the bottom of the barrel 30.

[0029] The support ring 35 extends with respect to thecylinder axis C-C.

[0030] Preferably, the support ring 35 is concentric with the cylinder axis C-C.

[0031] According to the present invention, the barrel group 3 further comprises at least one hole 300 extending transversely from the barrel 30 to the support ring 35 to allow the outflow of gases. In particular, through the at least one hole 300, the gases flow from the barrel 30 to the piston to perform the re-cocking operations.

[0032] According to a preferred embodiment, the barrel group 3 comprises at least two angularly spaced holes 300.

[0033] Preferably, the support ring 35 is made of metallic material, preferably steel alloy.

[0034] Preferably, the support ring 35 is joined in one piece with the barrel 30.

[0035] Preferably, the support ring 35 is welded and subjected to heat treatments together with the barrel 30.

[0036] According to a preferred embodiment, the support ring 35 extends axially for a length of about 2 centimeters .

[0037] According to the present invention, themagazine tube group 4 comprises a gas intake cylinder device 5.

[0038] The gas intake cylinder device 5 is mountable onto the support ring 35 comprising a hollow cylinder 51 and a fastening ferrule 52.

[0039] According to the present invention, the hollow cylinder 51 and the fastening ferrule 52 are mutually engageable for tightening to the support ring 35.

[0040] Said hollow cylinder 51 and fastening ferrule 52 operate respectively along the cylinder axis C-C in a first direction and in a second direction.

[0041] In other words, preferably, the hollow cylinder 51 and the fastening ferrule 52 perform respective pushing and tightening actions on the two sides of the support ring 35.

[0042] Preferably, the gas intake cylinder device 5 is crossable by the piston 40 included in the magazine tube group 4.

[0043] According to a preferred embodiment, the hollow cylinder 51 comprises a smooth annular surface 510, of complementary shape to the support ring 35. Preferably, the support ring 35 comprises an inner annular wall 351, and the smooth annular surface 510 has a complementaryshape to said inner annular wall 351.

[0044] Preferably, said smooth annular surface 510 comprises a passage eyelet 510' , which extends over a circumferential segment, facing, in radial direction, the at least one hole 300. Preferably, through said passage eyelet 510' the gases crossing the hole 300 flow. Preferably, the passage eyelet 510' extends in such a manner as to be radially facing the plurality of holes 300.

[0045] According to a preferred embodiment, the hollow cylinder 51 comprises, at the ends from the smooth annular surface 510, an annular abutment 511 suitable for abutting against the support ring 35 and a fastening region 512 engageable by the fastening ferrule 52.

[0046] According to a preferred embodiment, the smooth annular surface 510 comprises an annular slot 515 and the gas intake cylinder device 5 comprises a gasket 55 suitable for sealingly engaging the support ring 35.

[0047] Preferably, said annular slot 515 is positioned proximally to the fastening ferrule 52.

[0048] According to a preferred embodiment, the hollow cylinder 51 comprises a thread 518 and the fastening ferrule 52 comprises a nut-screw 528.

[0049] Preferably, the annular slot 515, and preferably the gasket 55, is positioned in an area proximal to the fastening region 512.

[0050] According to a preferred embodiment, the hollow cylinder 51 also comprises axial vent holes 517.

[0051] According to a preferred embodiment, the hollow cylinder 51 also comprises a vent member 519 extending on the side opposite to the fastening ferrule 52, wherein said vent member 519 comprises an elastic element 519' .

[0052] Preferably, said vent member 519 is fitted onto the hollow cylinder 51, and extends concentrically to it.

[0053] Preferably, said elastic element 519' is a spring, preferably a helical spring.

[0054] According to a preferred embodiment, the gas crosses the axial vent holes 517 and performs an action on the vent member 519 overcoming the action of the elastic element 519' . In other words, the axial venting takes place only in the presence of a pressure that exceeds the elastic action of the elastic element 519' .

[0055] Innovatively, the semi-automatic rifle object of the present invention fully achieves the intended purpose .

[0056] Advantageously, the semi-automatic rifle objectof the present invention is an alternative solution to the known ones.

[0057] Advantageously, the semi-automatic rifle object of the present invention has an innovative mountable, and removable, gas intake cylinder device from the support ring .

[0058] Advantageously, the mountable gas intake cylinder device allows for simple maintenance and cleaning operations.

[0059] Advantageously, the semi-automatic rifle simplifies the manufacturing operations of the rifle as a whole, but above all of the barrel group.

[0060] It is clear that a person skilled in the art, in order to meet contingent needs, could make changes to the invention described above, all falling within the scope of protection as defined by the following claims.

Claims

CLAIMS1. A semi-automatic rifle (1) comprising: i) a main body (2) ; ii) a barrel group (3) comprising a barrel (30) extending along a barrel axis (X-X) engaged at one end with the main body (2) , a support ring (35) engaged with the bottom of the barrel (30) , extending with respect to a cylinder axis (C-C) substantially parallel to the barrel axis (X-X) , and at least one hole (300) extending transversely from the barrel (30) to the support ring (35) to allow the outflow of gases; iii) a magazine tube group (4) extending along the cylinder axis (C-C) engaged at one end with the main body (2) , and comprising a gas intake cylinder device (5) mountable to the support ring (35) comprising a hollow cylinder (51) and a fastening ferrule (52) mutually engageable for tightening onto the support ring (35 5) , operating along the cylinder axis (C-C) in a first direction and in a second direction, respectively.

2. Semi-automatic rifle (1) according to claim 1, wherein the support ring (35) is joined in one piece to the barrel ( 30 ) .

3. Semi-automatic rifle (1) according to any one of the preceding claims, wherein the hollow cylinder (51)comprises a smooth annular surface (510) , with a complementary shape to an inner annular wall (351) enclosed in the support ring (35) , wherein said smooth annular surface (510) comprises a passage eyelet (510' ) , extending over a circumferential segment, facing the at least one hole (300) .

4. Semi-automatic rifle (1) according to claim 3, wherein the hollow cylinder (51) comprises, at the ends from the smooth annular surface (510) , an annular abutment (511) suitable for abutting against the support ring (35) and a fastening region (512) engageable by the fastening ferrule ( 52 ) .

5. Semi-automatic rifle (1) according to claim 3 or claim5. wherein the smooth annular surface (510) comprises an annular slot (515) and the gas intake cylinder device (5) comprises a gasket (55) suitable for being housed in said annular slot (515) to sealingly engage the support ring (35) .

6. Semi-automatic rifle (1) according to claim 5, wherein said annular slot (515) is positioned proximally to the fastening ferrule (52) .

7. Semi-automatic rifle (1) according to any one of the preceding claims, wherein the hollow cylinder (51)comprises a thread (518) and the fastening ferrule (52) comprises a nut-screw (528) .

8. Semi-automatic rifle (1) according to any one of the preceding claims, wherein the hollow cylinder (51) also comprises axial vent holes (517 518) .

9. Semi-automatic rifle (1) according to claim 8, wherein the hollow cylinder (51) also comprises a vent member (519) extending from the side opposite to the fastening ferrule (52) , wherein said vent member (519) comprises an elastic element (519' ) , preferably a spring, and wherein the gas crosses the axial vent holes (517 518) and performs an action on the vent member (519) overcoming the action of the elastic element ( 519 ’ ) .

Images