Rifle

The modular cap group system on semi-automatic rifles allows for easy balance adjustment through interchangeable head devices, addressing the challenge of achieving personalized balance while preserving the rifle's aesthetics.

WO2026058072A1PCT designated stage Publication Date: 2026-03-19FABBRICA DARMI PIETRO BERETTA SPA
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-07-23
Publication Date
2026-03-19

AI Technical Summary

Technical Problem

Existing semi-automatic rifles, particularly those for sporting use, face challenges in achieving a balance that meets individual user needs, and known balance-adjusting solutions are cumbersome and aesthetically detrimental.

Method used

A modular cap group system comprising a cap device and head device, with a locking mechanism, allows for easy attachment and detachment of interchangeable head devices of varying weights to adjust the rifle's balance, maintaining a clean aesthetic.

Benefits of technology

Enables simple and effective balance adjustment of the rifle according to user preferences without altering its appearance, providing versatility and ease of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention is a semi-automatic rifle (1) comprising : i) a main group (2); ii) a magazine tube group (3) extending along an axis (F-F) comprising a handle (30) extending between a first end (31), proximal to the main group (2), and a second end ( 32 ); iii) a cap group (4), engaged with the second end (32), coaxial to the magazine tube group (3) along the axis (F-F). The cap group (4) comprises a cap device (5) locking the handle ( 30 ), a head device (6), and a locking device (7), operable between a locking configuration in which the cap device (5) and the head device (6) are mutually constrained and an unlocking configuration in which the cap device (5) and the head device (6) are mutually unconstrained.
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Description

"RIFLE"DESCRIPTION

[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 such as those of the firing mechanism or the trigger group are housed or engaged .

[0004] In particular, the main body is also suitable for supporting a barrel group and a magazine tube group.

[0005] According to a preferred embodiment, the semiautomatic rifle, object of the present invention, is of the type known as "gas-operated". In such a semiautomatic rifle, the energy of the gases resulting from the explosion of the gunpowder is exploited: a part of said gases is in fact 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 movable masses,ejects the cartridge case and loads the new cartridge.

[0006] Preferably, the semi-automatic rifle object of the present invention is of the type known as "inertial", in which the inertial energy of a movable mass is exploited to carry out the re-cocking action.

[0007] A typical problem of firearms, and in particular of rifles, is that of having a well-balanced weapon, both during the shooting step and during aiming. Rifles, especially those for sporting use, for example with long barrels, are therefore designed and manufactured accordingly. However, each user has specific needs and preferences, therefore it is not necessarily the case that the balance of the rifle as manufactured meets everyone's requirements.

[0008] To solve this problem, it is therefore known to use specific ballast elements, for example mountable on the rifle, for example on the rib of the barrel, to modify the balance according to said needs. However, such known elements are not always easy to mount and above all affect the overall appearance of the rifle.

[0009] The aim of the present invention is to provide an alternative semi-automatic rifle solution to those of the prior art, suitable for allowing a simple and effective solution to the problem of balancing.

[0010] Said aim is achieved by means of the semiautomatic rifle according to claim 1. The dependent claims seek protection for further characteristics and involve further technical advantages.

[0011] In addition, further characteristics and advantages of the invention will appear from the description set out below of its preferred embodiments, given by way of illustrative and non-limiting examples, with reference to the accompanying figures, in which:

[0012] - Figure 1 shows in a perspective view a semiautomatic rifle according to the present invention;

[0013] - Figure 2 represents an enlarged view of a detail of the rifle of figure 1;

[0014] - Figure 3 represents a side view of a cap group in accordance with the present invention;

[0015] - Figure 4 shows a top view of said cap group shown in figure 3;

[0016] - Figure 5 shows a cross-section of figure 3;

[0017] - Figure 6 shows a cross-section of a head device of the cap group;

[0018] - Figure 7 shows a cross-section of the cap group in a locking configuration of a locking device wherein a head device and a cap device are engaged;

[0019] - Figure 8 shows a cross-section of the cap group in an unlocking configuration of a locking device wherein a head device and a cap device are mutually disengaged;

[0020] - Figure 9 shows an exploded perspective view of the disassembled cap group according to a preferred embodiment thereof;

[0021] - Figure 10 shows a cross-section of the cap group according to a preferred embodiment thereof.

[0022] With reference to the accompanying figures, the number 1 denotes, in its entirety, a semi-automatic rifle in accordance with the present invention.

[0023] Preferably, said semi-automatic rifle 1 is a semi-automatic rifle for sporting use, for example for hunting .

[0024] 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 a receiver.

[0025] Said main body 2 houses or supports all the various components suitable for performing the firing action .

[0026] The semi-automatic rifle 1 comprises a barrel 9, which extends in length from the main body 2 along a barrel axis X-X.

[0027] The semi-automatic rifle 1 comprises amagazine tube group 3, which extends in length from the main body 2.

[0028] Preferably, said magazine tube group 3 is operatively connected with the barrel 9 to perform the re-cocking operations comprising a piston and a hollow cylinder in which said piston is housed.

[0029] Said magazine tube group 3 extends along an axis F-F.

[0030] Preferably, said axis F-F is substantially parallel to the barrel axis X-X.

[0031] Furthermore, the magazine tube group 3 comprises a handle 30, graspable by a user, extending between a first end 31, proximal to the main group 2, and a second end 32. Preferably, said handle 30 is suitable for housing the kinematic components, such as the piston and the springs, included in the magazine tube group 3.

[0032] Preferably, the magazine tube group 3 engages the main body 2 by means of the first end 31.

[0033] In accordance with the present invention, the semi-automatic rifle 1 comprises a cap group 4.

[0034] Said cap group 4 is engaged to said second end of the magazine tube group 3.

[0035] Preferably, the cap group 4 is coaxial with respect to the axis F-F.

[0036] According to the present invention, the cap group 4 comprises a cap device 5 and a head device 6 engageable with each other.

[0037] Preferably, the cap device 5 is suitable for engaging the magazine tube group 3 to keep it in position and to lock it.

[0038] Preferably, the head device 6 is suitable for containing the cap device 5.

[0039] As stated, according to a preferred embodiment, the cap device 5 is engaged to the magazine tube group 3.

[0040] In accordance with a preferred embodiment, the cap device 5 engages the magazine tube group 3 by means of a threaded coupling.

[0041] According to a preferred embodiment, the cap device 5 is made of metallic material.

[0042] Preferably, the cap device 5 comprises within it a threaded surface 51.

[0043] In particular, the threaded surface 51 is of the nut-screw type.

[0044] Preferably, said threaded surface 51 is concentric with the axis F-F.

[0045] Preferably, said threaded surface 51 is proximal to the axis F-F.

[0046] Preferably, a rod included in the magazinetube group 3 is engaged to said threaded surface 51.

[0047] According to a preferred embodiment, the cap device 5 engages the handle with a region substantially radially distal from the axis F-F.

[0048] In accordance with a preferred embodiment, the cap device 5 comprises within it an annular smooth surface 52.

[0049] Preferably, the annular smooth surface 52 is located near the threaded surface 51.

[0050] In accordance with a preferred embodiment, the cap device 5 comprises within it a cavity 53.

[0051] Preferably, said cavity 53 extends circumferentially inside the cap device 5.

[0052] Preferably, the cavity 53 is located near the annular smooth surface 52. That is to say, the cavity 53 extends internally with respect to the annular smooth surface 52.

[0053] In accordance with a preferred embodiment, the head device 6 is substantially annular in shape with respect to the cap device 5. As stated, in fact, the head device 6 is shaped to house within it, almost entirely, the cap device 5.

[0054] In accordance with the present invention, the semi-automatic rifle 1 also comprises a locking device 7 suitable for allow the mutual engagement anddisengagement between the head device 6 and the cap device 5 .

[0055] Preferably, said locking device 7 is operable between a locking configuration, in which the cap device 5 and the head device 6 are mutually constrained, and an unlocking configuration, in which the cap device 5 and the head device 6 are mutually unconstrained .

[0056] Preferably, therefore , in the locking configuration the cap device 5 and the head device 6 are manipulable in unison . Preferably, therefore , in the unlocking configuration the cap device 5 and the head device 6 are manipulable separately .

[0057] Preferably, with the cap device 5 engaged to the magazine tube group 3 , in the locking configuration the head device 6 is also rigidly engaged to the magazine tube group 3 , whereas in the unlocking configuration the head device 6 is separable from the magazine tube group 3 .

[0058] According to a preferred embodiment , the locking device 7 is operable along the axis F-F . In other words , a change in its position with respect to said axis F-F causes the aforementioned configuration change from the locking configuration to the unlocking configuration, and possibly vice versa .

[0059] In accordance with a preferred embodiment , thehead device 6 is constrainable to the cap device 5 by an axial movement along the axis F-F.

[0060] In accordance with a preferred embodiment, the head device 6 is constrainable to the cap device 5 with a roto-translational movement along the axis F-F.

[0061] Preferably, the head device 6 is unconstrainable from the cap device 5 only after the locking device 7 is configured in the unlocking configuration .

[0062] According to a preferred embodiment, the head device 6 comprises a compartment 61.

[0063] Preferably, said compartment 61 is predominantly cylindrical in shape and is coaxial with respect to the head device 6.

[0064] In accordance with a preferred embodiment, the locking device 7 is located inside the compartment 61.

[0065] Preferably, the locking device 7 comprises a pin 71.

[0066] Preferably, the locking device 7 comprises at least one engagement element 72, 73. Preferably, depending on the position of the engagement element 72, 73, the head device 5 and the cap device 6 are mutually engaged or disengaged.

[0067] Preferably, the locking device 7 comprises a thrust means 74.

[0068] In accordance with a preferred embodiment, in the transition between the locking configuration and the unlocking configuration, the action of the thrust means 74 is overcome.

[0069] According to a preferred embodiment, the pin 71 is made of metallic material.

[0070] According to a preferred embodiment, the at least one engagement element 72, 73 is made of metallic material .

[0071] According to a preferred embodiment, the thrust means 74 is made of metallic material.

[0072] Preferably, said pin 71 is coaxial with respect to the head device 6 and the compartment 61.

[0073] In accordance with a preferred embodiment, the at least one engagement element 72, 73 comprises at least one small sphere. Preferably, the at least one engagement element 72, 73 comprises two small spheres.

[0074] In accordance with a preferred embodiment, the at least one engagement element 72, 73 is movable on an imaginary plane substantially orthogonal to the axis F- F.

[0075] According to a preferred embodiment, said thrust means 74 is coaxial with respect to the head device 6 and the compartment 61.

[0076] Preferably, the thrust means 74 is a spring,for example a helical spring.

[0077] In accordance with a preferred embodiment, the thrust means 74 is suitable for performing an elastic thrust action on the at least one engagement element 72, 73.

[0078] In accordance with a preferred embodiment, said pin 71 engages the thrust means 74. Therefore, the thrust means 74 is suitable for performing an elastic thrust action on the pin 71 which in turn performs a thrust action on the at least one engagement element 72, 73.

[0079] In accordance with a preferred embodiment, said pin 71 has an outer surface 710 comprising at least one recess 712, 713.

[0080] In accordance with a preferred embodiment, the at least one recess 712, 713 is engaged by the at least one engagement element 72, 73 during an unlocking step between the head device 6 and the cap device 5. That is to say, in the unlocking step of the head device 6 from the cap device 5, the at least one engagement element 72, 73 is housed in the at least one recess 712, 713.

[0081] In accordance with a preferred embodiment, the compartment 61 comprises at least one passage 612, 613 crossable by the at least one engagement element 712, 713. That is to say, in the locking configuration of thehead device 6 to the cap device 5, the at least one engagement element 72, 73 crosses the passage 612, 613 to be housed in the cavity 53.

[0082] According to a preferred embodiment, the head device 6 is made of metallic material.

[0083] According to a preferred embodiment, the head device 6 is made of polymeric material.

[0084] In other words, by moving the pin 71, the at least one recess 712, 713 is brought into a position such that the engagement element 72, 73 is housed therein, releasing the cavity 53.

[0085] According to a preferred embodiment, the at least one passage 612, 613 is shaped to prevent the complete passage of the entire engagement element 72, 73. That is to say, the at least one passage 612, 613 is shaped to retain the engagement element 72, 73 on board of the cap device 6, allowing partial exit thereof for its respective housing in the cavity 53.

[0086] In accordance with a preferred embodiment, the cap group 4 comprises a plurality of head devices 6 engageable to the cap device 5.

[0087] Advantageously, said plurality of head devices 6 comprises head devices 6 of different weights.

[0088] Advantageously, said head devices 6 of different weights are suitable for modify the positionof the centre of gravity of the semi-automatic rifle.

[0089] According to a preferred embodiment, the cap group 4 also comprises other accessory elements of the rifle, such as for example a ring engageable with a shoulder strap. Preferably, the head device 6 comprises said ring.

[0090] According to a preferred embodiment, the head device 6 is removably engageable to the cap device 5, and between the mutually engaged cap device 5 and head device 6 there is a chamber S.

[0091] Furthermore, in accordance with a preferred embodiment, the cap group 4 comprises an overweight device 8 housable in the chamber S.

[0092] Preferably, the chamber S is annular.

[0093] Preferably, the chamber S is concentric with the axis F-F.

[0094] In a preferred embodiment, the overweight device 8 is arranged around the axis F-F.

[0095] In a preferred embodiment, the overweight device 8 comprises at least two overweight elements 81.

[0096] In a preferred embodiment, the overweight element 81 has an annular shape.

[0097] In a preferred embodiment, the overweightelement 81 has the shape of a cylindrical segment or cylindrical sector. Preferably, the plurality of overweight elements 81 have annular extension, preferably in the form of a closed ring alternatively to an open ring.

[0098] Preferably, the overweight elements 81 are arranged symmetrically around the axis F-F.

[0099] Alternatively, the overweight elements 81 are arranged asymmetrically around the axis F-F.

[0100] In a preferred embodiment, the cap group 4 comprises a fastening ferrule device 10 housed in the chamber S .

[0101] According to a preferred embodiment, the overweight elements 81 have physical characteristics differing from one another: for example, the overweight elements 81 have different weights, therefore, the relative position of overweight elements 81 of different weight modifies the centre of gravity.

[0102] In such a preferred embodiment, the fastening ferrule device 10 is engageable to the cap device 5 to constrain the overweight device 8 to said cap device 5.

[0103] In a preferred embodiment, the cap device 5 comprises an outer cap surface 54.

[0104] In such a preferred embodiment, the outer cap surface 54 and the fastening ferrule device 10 are mutually engageable by means of a threaded coupling.

[0105] Alternatively, the outer cap surface 54 and the fastening ferrule device 10 are mutually engageable by means of a snap-fit coupling.

[0106] In a preferred embodiment, the outer cap surface 54 comprises a cap outer threaded portion 541 and the fastening ferrule device 10 comprises a threaded portion 101 of the nut-screw type.

[0107] In such a preferred embodiment, the engagement between the outer cap surface 54 and the fastening ferrule device 10 takes place by means of a threaded coupling between the outer threaded portion 541 and the threaded portion 101.

[0108] In a preferred embodiment, the fastening ferrule device 10 comprises at least one undercut 102 and the overweight device 8 comprises an axial projection 82 which is housed in said undercut 102.

[0109] For example, the axial projection 82 has a shape complementary to the undercut 102.

[0110] Fo r example, the longitudinal section of the axial projection 82 is a rectangle.

[0111] Alternatively, the longitudinal section of the axial projection 82 is a triangle.

[0112] In particular, by longitudinal section is meant the section obtained by the intersection of the axial projection 82 with an imaginary plane on which the axis F-F lies.

[0113] The fastening ferrule device 10 may comprise a number of undercuts 102 equal to the number of axial projections 82 included in the overweight device.

[0114] Alternatively, the fastening ferrule device 10 may comprise a number of undercuts 102 different from the number of axial projections 82 included in the overweight device, to allow different group combinations between the fixing ring 10 and the overweight device 8.

[0115] Innovatively, the semi-automatic rifle object of the present invention fully achieves the intended purpose .

[0116] Advantageously, the semi-automatic rifle object of the present invention features an innovative cap group, easily mountable and dismountable, suitable for modifying the balance of the rifle.

[0117] Advantageously, the semi-automatic rifle is extremely versatile, being configurable according to theneeds of the user.

[0118] Advantageously, the semi-automatic rifle is adjustable in its balance while maintaining its appearance. Advantageously, the semi-automatic rifle presents itself in any balance configuration with the same clean line.

[0119] Advantageously, the mountable cap group allows simple group and disgroup operations.

[0120] Advantageously, the operations performed on the cap group by the user are guided and error-proof.

[0121] Advantageously, the cap group may also comprise other accessory elements of the rifle, such as for example a ring engageable with a shoulder strap, simplifying its use and making the semi-automatic rifle even more versatile.

[0122] Advantageously, the overweight device allows the spatial position of the centre of gravity of the rifle to be modified easily and efficiently in order to alter the shooting experience.

[0123] Advantageously, the overweight device can be quickly mounted and dismounted for simple and effective use, functionally to the use of the rifle.

[0124] Advantageously, the modular structure of the overweight device makes it versatile and suitable forvarious different configurations.

[0125] Advantageously, the fastening ferrule device allows solid group between the parts of the cap group so that the group is not loosened by the shocks and vibrations generated by the firing of the rifle.

[0126] It is clear that an expert in the field, in order to meet contingent needs, could make modifications to the invention described above, all within the scope of protection as defined by the following claims.

Claims

CLAIMS1. A semi-automatic rifle (1) comprising: i) a main group (2) ; ii) a magazine tube group (3) extending along an axis (F-F) comprising a handle (30) extending between a first end (31) , proximal to the main group (2) , and a second end ( 32 ) ; iii) a cap group (4) , engaged with the second end (32) , coaxial to the magazine tube group (3) along the axis (F-F) , and comprising:- a cap device (5) locking the handle (30) ;- a head device (6) ;- a locking device (7) , operable between a locking configuration, in which the cap device (5) and the head device (6) are mutually constrained, and an unlocking configuration, in which the cap device (5) and the head device (6) are mutually unconstrained.

2. Semi-automatic rifle (1) according to claim 1, wherein the cap device (5) and the magazine tube group (3) are engageable by means of a threaded coupling.

3. Semi-automatic rifle (1) according to claim 2, wherein the cap device (5) has a threaded inner surfacecap device (5) and the magazine tube group (3) .

4. Semi-automatic rifle (1) according to any one of the preceding claims, wherein the locking device (7) is operable along the axis (F-F) between the locking configuration and the unlocking configuration.

5. Semi-automatic rifle (1) according to any one of the preceding claims, wherein the locking device (7) comprises :- at least one engagement element (72, 73) movable on an imaginary plane substantially orthogonal to the axis (F-F) ;- a thrust means (74) suitable for performing an elastic thrust action on the at least one engagement element (72, 73) ; wherein, in the transition between the locking configuration and the unlocking configuration, the action of the thrust means (74) is overcome.

6. Semi-automatic rifle (1) according to claim 5, wherein the locking device (7) comprises a pin (71) , extending along the axis (F-F) , movable to a position in which it prevails the elastic thrust action of the thrust means (74) , wherein the at least one engagement element (72, 73) is movable.

7. Semi-automatic rifle (1) according to claim 6, wherein the action of the thrust means (74) is parallel to the axis (F-F) and the pin (71) is axially movable.

8. Semi-automatic rifle (1) according to claim 6 or 7, wherein the pin (71) comprises an outer surface (710) comprising at least one recess (712, 713) accommodating the at least one engagement element (72, 73) in the unlocking configuration.

9. Semi-automatic rifle (1) according to any one of claims 5 to 8, wherein the at least one engagement element (72, 73) is a sphere.

10. Semi-automatic rifle (1) according to any one of claims 5 to 9, wherein the head device (6) comprises a substantially cylindrical compartment (61) , coaxial to the axis (F-F) , which houses the locking device (7) , wherein the compartment (61) comprises at least one passage (612, 613) crossable by the at least one engagement element (72, 73) in the locking configuration .

11. Semi-automatic rifle (1) according to any one of claims 5 to 10, wherein the cap device (5) has a hollow cavity (53) suitable for accommodating the at least one engagement element (72, 73) in the locking configuration .

12. Semi-automatic rifle (1) according to any one of the preceding claims, comprising a cap group (4) which comprises a plurality of head devices (6) engageable in the locking configuration with the cap device (5) , wherein each head device (6) has a specific weight suitable for modifying the position of the center of gravity of the semi-automatic rifle (1) .

13. A semi-automatic rifle (1) according to any one of claims wherein the head device (6) , is removably engageable with the cap device (5) , wherein a chamber (S) is present between the mutually engaged cap device (5) and head device (6) ; and wherein the cap group (4) comprises an overweight device (8) housable in the chamber (S) .

14. Semi-automatic rifle (1) according to claim 13, wherein the overweight device (8) is arranged about the axis (F-F) and comprises at least two overweight elements (81) .

15. Semi-automatic rifle (1) according to claim 14, wherein each overweight element (81) is in the shape of a cylindrical segment.

16. Semi-automatic rifle (1) according to any one of claims 13 to 15, wherein the cap group (4) comprises a fastening ferrule device (10) housed in the chamber (S) , engageable with the cap device (5) to constrain theoverweight device (8) to said cap device (5) or engageable with the head device (6) to constrain the overweight device (8) to said head device (6) .

17. Semi-automatic rifle (1) according to claim 17, wherein the cap device (5) comprises an outer cap surface (54) , wherein the outer cap surface (54) and the fastening ferrule device (10) are mutually engageable by threaded coupling.

18. Semi-automatic rifle (1) according to claim 5, wherein the outer cap surface (54) comprises an outer threaded cap portion (541) and the fastening ferrule device (10) comprises a threaded ferrule portion (101) of the nut-screw type.

19. Semi-automatic rifle (1) according to any one of the claims 16 to 18, wherein the fastening ferrule device(10) includes at least an undercut (102) and the overweight device (8) includes an axial projection (82) housed in said undercut (102) .

Citation Information

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