Acoustic signature suppressors for firearms and firearms equipped with them

Abstract

To create an acoustic signature suppressor for autoloading firearms that offers improved safety and overcomes at least some of the shortcomings of conventional technologies. [Solution] The present invention relates to an acoustic signature suppressor (1) for a firearm, which comprises at least one housing (4) through a bullet channel (11), and at least one drain hole (27) formed at or near the weapon-side end of the housing (4), through which liquid can be discharged from the suppressor (1), and when attached to a firearm, the at least one drain hole (27) connects the inside (4) of the suppressor (1) to the outside, thereby discharging liquid inside (4) through one or more drain holes (27) to secure the bullet channel (11) and allow for safe firing within seconds. The present invention also relates to the use of the above-mentioned acoustic signature suppressor for removing liquid, and to a firearm equipped with the above-mentioned acoustic signature suppressor.

Description

Technical Field

[0001] TIFF2026052048000002.tif26170

[0002] Terms representing directions in this document, such as "up", "down", "front", "back", etc., are related to pistols where the barrel axis is horizontal and the firearm is fired forward away from the shooter.

[0003] The present invention generally relates to so-called acoustic signature suppressors, which are also colloquially called silencers. An acoustic signature suppressor is a device that can be attached to the barrel of a firearm or to additional elements such as a flash suppressor or muzzle brake attached thereto. These are used to suppress the explosive sound and flash generated during the firing of a handgun and to reduce the acoustic and visual effects during firing.

[0004] Briefly stated, they function as follows: When a handgun is fired, the propellant gas propels the bullet through the barrel and muzzle of the handgun, and the bullet enters and passes through the acoustic signature suppressor at the muzzle, specifically the bullet channel at the muzzle. Since this propellant gas expands inside the acoustic signature suppressor, its pressure is reduced, and the noise it emits is suppressed. In order to dissipate the kinetic energy of the propellant before it exits the suppressor, there are usually structures inside the suppressor that act on the flow of the propellant. These structures form acoustic baffles that minimize noise by, for example, changing the direction of the gas flow to reduce the flow velocity and cooling it. Also, the acoustic signature suppressor reduces recoil and suppresses the flash at the muzzle.

Background Art

[0005] Since around 2006, firearms, especially automatic-loading firearms, have been designed to be usable immediately after being removed from water or other liquids, and to fire safely even if some liquid remains inside the weapon. However, if an acoustic signature suppressor is attached to such a weapon, and it is fired immediately after being removed from water, and the suppressor is filled with water, the weapon may explode, or the bullet may fly out of the suppressor sideways. This is because the bullet and propellant collide with an incompressible column of water inside the suppressor, and all the kinematic forces of the bullet and propellant gases are released into the water column. Water destabilizes the bullet upon impact, causing an irregular trajectory. This endangers the shooter and those nearby.

[0006] Patent Document 1 by the present applicant discloses a firearm with a more robust breech mechanism that allows the firearm to function fully 1 to 3 seconds after being removed from water or other liquids. This includes various drainage holes, particularly within the housing of the breech spring, through which the liquid can be quickly and easily drained.

[0007] An acoustic signature suppressor for fully automatic firearms is disclosed in Patent Document 2, which is specifically designed to withstand the high temperatures generated during continuous firing. It has a sleeve with a lining made of heat-resistant and heat-insulating material and two end attachments, which surrounds the acoustic signature suppressor. The end attachment at the front end from which the bullet exits has a number of holes on its end face for releasing propellant gases. A pressure release valve and a pressure release chamber are located at the bottom of the acoustic signature suppressor.

[0008] Acoustic signature suppressors generally have holes and exhaust valves. These (overpressure) holes are intended to be opened when the firearm is fired. They need to be open because they are intended to prevent malfunction of the breech mechanism of automatic loading weapons. For example, the Russian AK-74 has an acoustic signature suppressor that prevents noise from being directly emitted towards the enemy by releasing excess gas pressure through holes on the sides of the suppressor's front end. The AK-74 does not have a gas valve, so there are holes for decompression, and therefore the acoustic signature suppressor plays a role in eliminating the overpressure created by the propellant.

[0009] Patent Document 3 discloses an acoustic signature suppressor for firearms that can be surrounded at least partially by an insulating material on the outside.

[0010] Various silicone sleeves for acoustic signature suppressors, specifically designed to prevent surface damage, are also available. Insulated sleeves for acoustic signature suppressors, made from a variety of materials, are also available.

[0011] OSS (USA) sells an acoustic signature suppressor using so-called flow-through (registered trademark) technology under the trademark name HUXWRX Safety-FLOW 22 Ti (huxwrx.com), which is patented by UT-Batelle LLC as Patent Document 4. This acoustic signature suppressor has multiple expansion chambers and a helical structure, which divert the gas flow within the suppressor through a helical path, ultimately releasing the propulsion gas through a hole at the front.

[0012] Patent Document 5 discloses an acoustic signature suppressor equipped with a blowout function that opens a hole in the suppressor when pressurized, similar to a pressure release valve. The suppressor housing has a window or circular structure at the front end or the side of the front end that moves and opens when exposed to overpressure. These structures are made of a material thinner than or different from the housing, and therefore deform and open when exposed to overpressure generated by the propellant passing through the suppressor. In addition, there are numerous holes on the end face from which the bullet exits.

[0013] Patent Document 6 discloses that by introducing a small amount of fluid, or other liquid or foam, into an acoustic signature suppressor, the suppressor can be fired in a “moist” state. The suppressor has a fluid chamber, which partially moistens the inner surface of the housing. This is designed to prevent, or at least reduce, “first-round pop.” This is based on the fact that when a firearm equipped with an acoustic signature suppressor is fired, the point of impact and sound differ between the first round and subsequent rounds. [Prior art documents] [Patent Documents]

[0014] [Patent Document 1] European Patent No. 2018508 [Patent Document 2] U.S. Patent No. 10,909,032 [Patent Document 3] U.S. Patent Application Publication No. 2017 / 0299314 [Patent Document 4] U.S. Patent No. 10,753,699 [Patent Document 5] U.S. Patent Application Publication No. 20220221243 [Patent Document 6] U.S. Patent Application Publication No. 20240077272 [Overview of the Initiative] [Problems that the invention aims to solve]

[0015] Based on prior art, the present invention aims to create another, particularly improved, acoustic signature suppressor for firearms, specifically for autoloading firearms, which offers improved safety and overcomes at least some of the shortcomings of the prior art. [Means for solving the problem]

[0016] This problem is solved by an acoustic signature suppressor for a firearm having the features of claim 1, and by its use for draining liquid from the acoustic signature suppressor through at least one drain hole, as described in claim 19.

[0017] The acoustic signature suppressor for firearms obtained by the present invention comprises at least one housing through a bullet channel, and at least one liquid discharge port formed at or near the end of the housing to which the weapon is attached, which allows liquid to be discharged from the suppressor before firing. When the acoustic signature suppressor is attached to a firearm, the inside of the housing is connected to the outside, allowing the liquid inside the housing to be discharged within a few seconds, particularly within 1 to 6 seconds, preferably within 1 to 3 seconds, thereby enabling safe firing.

[0018] Discharging liquid from an acoustic signature suppressor as intended in this invention includes passive discharge of liquid and / or active forced discharge of liquid from the suppressor.

[0019] The present invention also provides a firearm having an acoustic signature suppressor as described in claim 17. The acoustic signature suppressor is preferably mounted directly to the barrel of the firearm or to a flash suppressor on the barrel in a precisely reproducible orientation.

[0020] The firearms obtained by the present invention can be pistols or rifles, particularly pistols, assault rifles, sniper rifles, machine guns, machine pistols; generally, self-loading firearms, particularly gas-operated self-loading firearms.

[0021] The connecting device for attaching the suppressor to the firearm, as well as the size, weight, material, outer shape, and internal structure of the suppressor, can vary. In particular, the baffle chamber and baffle can be arbitrarily arranged and are not limited to those shown in the drawings. The baffle and chamber can be designed so that the gas flows through a helical path through the acoustic signature suppressor. The suppressor can also have a double casing or a radial double chamber. The suppressor can also include an additional gas expansion chamber disposed at an appropriate position inside.

[0022] The acoustic signature suppressor can have a rotationally symmetric or asymmetric outer shape with respect to the barrel of the bullet. The latter is the case of a so-called pelican suppressor, which has a rectangular parallelepiped or cubic chamber at the bottom, thereby expanding the internal volume of the suppressor.

[0023] The acoustic signature suppressor has at least one drain hole. These holes can have any shape and size. For example, a simple design of the drain hole can be a borehole or notch forming a rectangle, slit, square, or ellipse, etc. For example, at least two of the drain holes can also form an elongated slot, groove, trough, etc.

[0024] One or more drain holes extending over substantially the entire length of the acoustic signature suppressor may be present. This also connects the internal chamber of the suppressor, particularly when additional drain holes extend through the baffle.

[0025] For use in water or other liquids, the acoustic signature suppressor is made of or coated with corrosion-resistant material, so it can also be used in saltwater.

[0026] Acoustic signature suppressors can be used with subsonic rounds, particularly due to their lower gas pressure, but they can also be used with supersonic rounds. Because these types of ammunition have significantly different gas pressures, there may be limitations in their use regarding the function of the firearm.

[0027] At least one drainage hole is preferably located at the rear end of the acoustic signature suppressor, preferably on its side. However, it can be placed at any suitable location on the suppressor housing.

[0028] In particular, if there are two or more drainage holes, they can be positioned at different locations on the housing. Ideally, at least two of these drainage holes should be positioned as far forward as possible to suppress flash and gas pressure. When firing the weapon upwards in rapid succession, ideally, at least one drainage hole should be positioned as far back as possible.

[0029] At least one drainage port ensures that water or other liquid is removed from the firearm as quickly and reliably as possible after it has been removed from the water or other liquid and before it is fired, thus ensuring the safety of the shooter and other persons nearby. The liquid may be simply discharged and / or actively forced out by propellant gas.

[0030] Compared to auto-loading firearms, acoustic signature suppressors have significantly larger internal volumes and chambers, resulting in a greater amount of water to be discharged and / or safely forced out. Therefore, the size of at least one drain hole depends on the total internal volume of the acoustic signature suppressor's housing and internal structure.

[0031] To this end, water can be drained, discharged, or removed from the acoustic signature suppressor by manually or automatically opening at least one drain hole.

[0032] At least one drain hole in the acoustic signature suppressor can be molded and sized to allow 50% to 60% of the contents inside the suppressor housing to drain within 1 to 6 seconds, preferably within 1 to 3 seconds.

[0033] Removing approximately 55% to 60% of the water or liquid from inside the acoustic signature suppressor ensures a hollow barrel and thus a clear path for the bullet, as long as the shooter holds the firearm essentially horizontally. If the firearm and acoustic signature suppressor are pointed upwards, more liquid, i.e., 60% to 80%, needs to be removed to ensure safe firing.

[0034] Any residual water or liquid can be forcibly expelled from the acoustic signature suppressor through at least one drain port and / or a hollow barrel by the propellant gas during firing. While this may require multiple firings, the residual water can be advantageously utilized because the liquid exhibits good suppression properties.

[0035] At least one drainage hole of the acoustic signature suppressor may be designed to be closable by at least one closure mechanism, which includes at least one closure element designed to completely or at least partially enclose the acoustic signature suppressor.

[0036] By moving this closing element, the hole can be opened and closed. In the open position, at least one drain hole is exposed or opened, allowing liquid to be discharged through it. In the closed position, this element covers the drain hole, preventing liquid from escaping from the suppressor.

[0037] This allows for the use of an acoustic signature suppressor that can close at least one drain hole immediately before firing. This maximizes both acoustic and visual suppression.

[0038] In an emergency, for example, if there is not enough time to drain or close the suppressor, the shooter can fire even if at least one of the drainage holes is only partially closed at most. In this case, the acoustic and visual suppression will be limited.

[0039] This at least one drain hole can also be opened and closed manually or automatically.

[0040] The locking element can be formed, for example, by a collar, flap, or slider. The locking element can at least partially surround the acoustic signature suppressor, for example, from below, above, or from the side. It can be installed on the suppressor from below before attaching it to the firearm, or it can be installed by sliding it in from the end from which the bullet exits.

[0041] Additionally, the acoustic signature suppressor may include two components that, when installed together, can move relative to each other to block at least one drain hole.

[0042] The closing mechanism of the acoustic signature suppressor, particularly at least one closing element, can be moved back and forth between an open state and a closed state by a coupling mechanism.

[0043] The coupling mechanism can be a telescopic or bayonet-type coupling, a rail guide, a slider guide, a tongue-groove connection, or, as in a pump-action rifle or several other suitable firearms, it can be formed by a control curve (Steuerkurve) with bolt holes on or inside the housing of the acoustic signature suppressor or inside the locking element.

[0044] The coupling mechanism can simply be a mechanism with coarse or fine threads. Coarse threads are advantageous when dealing with foreign matter such as sand or mud. Depending on the thread pitch, the collar can be moved from the open to the closed position in just 1 / 3, 1 / 2, or 2 / 3 of a turn, allowing for rapid closing and thus rapid use of the firearm. A lever, grip, or handle, similar to those on pump-action firearms, can also be formed on the closing element.

[0045] To obtain a coupling mechanism, part or all of the wall of the acoustic signature suppressor housing can be easily thickened, and the coupling mechanism, such as threads, grooves, rail guides, or control curves, can be milled therein. This coupling mechanism, such as threads, grooves, rail guides, or control curves, can also be positioned on the housing and attached to it. The same applies to complementary closing elements having complementary parts, such as corresponding threads or control bolts on their inner surfaces.

[0046] At least one closing element can be moved radially, axially, obliquely, and / or horizontally on the acoustic signature suppressor.

[0047] Depending on the design and arrangement of the closing elements, the closing elements can be safely moved into a closed state, ensuring that at least one drain hole is reliably closed.

[0048] The closing elements can be guided using threads, slider guides, bayonet connectors, rail guides, or other guides. The closing elements can also be secured in place by clipping, snapping, or other means.

[0049] The closing element can also be clamped in a closed position to the acoustic signature suppressor housing, for example, by at least one tensioner, such as a screw. When using such an element, it can be secured even while wearing gloves. The use of additional seals ensures that propellant leakage is prevented.

[0050] The present invention provides various scenarios for enabling the closure of at least one drain hole.

[0051] For example, an acoustic signature suppressor with at least one drain hole can be opened and closed by radial or axial rotational motion (e.g., via oversized coarse threads on the acoustic signature suppressor) via one or more radial sleeves. Minimizing the angle of rotation allows for quick closing operations, reducing time loss during use. Furthermore, at least one drainage port of the acoustic signature suppressor can be opened and closed by moving one or more radial closing elements, particularly one or more collars, horizontally (essentially similar to the operation of a pump-action firearm).

[0052] In both of the above cases, the acoustic signature suppressor and one or more collars can be sealed against vapors and gases by the corresponding rim or undercut located as far back as possible, particularly at the rear end of one or more collars. The forward-facing interface does not need to be as tightly sealed in order to facilitate pressure compensation by expelling propellant and residual water forward, which is the direction of firing.

[0053] The acoustic signature suppressor can also be designed as two parts, in which case the rear part of the suppressor is fixedly attached to the muzzle, and the front part moves back and forth, either by twisting if it is attached by threads, or by sliding if it is formed as a sleeve over the drain hole, to close or open the drain hole.

[0054] In this case, the rear part of the suppressor may have at least one drain hole, which can be closed by the front part.

[0055] Alternatively, at least one relatively small drainage hole can be formed in the front part of the suppressor. In this case, at least one drainage hole can be closed or opened by inserting or screwing the front part into the rear part of the suppressor. Advantageously, this creates an automatically forward-facing annular gap between the two parts of the suppressor, through which vapor and propellant are automatically directed away from the shooter and towards the firing direction.

[0056] One possible application is that the shooter may submerge with the firearm while at least one drain hole remains open. In this case, at least one drain hole is preferably located at the bottom of the acoustic signature suppressor. Immediately after surfacing, water is easily and relatively quickly and quietly drained from the suppressor by gravity. The shooter then closes at least one drain hole by a mechanism that can be operated as easily and quickly as possible, for example, by twisting or sliding a movable closing element or flap, thereby immediately preparing to fire.

[0057] The closing mechanism of an acoustic signature suppressor may have at least one seal, particularly on the closing element and / or on the suppressor, to prevent liquid from leaking out.

[0058] This seal forms a seal between one or more closure elements and the housing of an acoustic signature suppressor. The seal can be placed in whole or in part on one or more closure elements and / or the housing of the suppressor, and / or the seal can be a separate sealing element. The seal can have thickened edges to form a bulge, such as an O-ring. The shape and mounting method depend on the size and shape of at least one drain hole. The seal can be made of conventional materials, particularly heat-resistant materials such as silicone.

[0059] Advantageously, the mounting point for the movable acoustic signature suppressor element is designed to be as airtight as possible. This allows vaporized water and propellant to be safely removed from the shooter and those nearby, ideally directed (diagonally) forward.

[0060] At least one drainage hole can be provided at the bottom of the acoustic signature suppressor.

[0061] The drain hole is preferably located at the bottom of the acoustic signature suppressor, i.e., at the 6 o'clock position. This allows water to be drained by gravity, as in conventional designs, especially when the firearm is held horizontally.

[0062] The drainage holes may also have a protective structure formed of a net, grid, or fiber. If there are two or more drainage holes, each of them may have this protective structure, or one structure may surround all of the drainage holes. The structure may be placed inside the drainage hole, or it may cover the drainage hole and be attached to the drainage hole by conventional means. A simple design of this structure can be obtained by a grid, net, rhombic, or fiber structure made of a material that can withstand extremely high temperatures.

[0063] This improves the reliability of the firearm by eliminating foreign matter such as coarse particles, sand, mud, seaweed, and algae when used underwater, especially in rough waters.

[0064] The acoustic signature suppressor may include at least one baffle chamber connected to the outside of the suppressor by at least one drain hole for draining liquid.

[0065] At least one drainage port of the acoustic signature suppressor can connect to at least two external chambers for draining liquid, and / or at least one second internal drainage port can connect to two such chambers inside the suppressor.

[0066] One or more of these chambers are at least partially open to the outside, or are at least partially connected to each other. In particular, it is preferable that at least one second drain hole is located near the wall of the suppressor housing.

[0067] This ensures sufficient drainage or discharge, preventing water or other liquids from accumulating in the isolated chamber.

[0068] In a preferred design, at least one, ideally all, of the baffles are provided with drainage holes.

[0069] Acoustic signature suppressors may also have recesses on the closing element and / or suppressor, along at least a portion of the suppressor's length, to expel liquid and / or gas-liquid mixtures in the direction of fire of the firearm.

[0070] This recess can form a groove that extends to cover one or more drainage holes, through which gas and / or a mixture of liquid and gas can be discharged toward the end of the suppressor from which the bullet is ejected, away from the shooter.

[0071] The recess can also extend spirally along the inner wall of the closing element. This is advantageous, for example, in the case of a circumferential closing element such as a collar.

[0072] The recess can be sealed at the end of the weapon and opened at the front where the bullet is ejected. This prevents the propellant from being ejected backward toward the shooter, and instead ejects the liquid and / or gas-and-liquid mixture forward toward the shooter.

[0073] The width of the recess may be less than, equal to, or greater than the diameter of at least one drain hole.

[0074] In principle, a relatively narrow recess, especially a groove, is sufficient for gas discharge. A wider recess is advantageous in that, even if the drainage hole is not completely closed, the liquid and / or mixture of gas and liquid is safely discharged forward away from the shooter.

[0075] Acoustic signature suppressors may include connectors that ensure precisely reproducible orientation when mounted on a firearm.

[0076] In one simple design, threads can be provided at the muzzle of the gun barrel, or on an element attached to the muzzle, to which the internal threads of an acoustic signature suppressor can be screwed.

[0077] Exposure to heat, smoke, and foreign matter typically prevents these screw connections from being removed without tools, potentially damaging the acoustic signature suppressor. Furthermore, depending on the degree to which the acoustic signature suppressor is screwed in, it may occupy various positions on the barrel or its attachment.

[0078] Both the acoustic signature suppressor and the barrel have bore axes, and they must be aligned to enable accurate firing. The position of the suppressor's bore axis changes relative to the barrel's bore axis depending on the suppressor's position on the barrel or attachment.

[0079] Unfortunately, when attaching an acoustic signature suppressor to a firearm, the suppressor's bore axis does not align with the barrel's bore axis due to the various positions the suppressor takes. This misalignment alters the point of impact and increases the size of the bullet grouping. This is disadvantageous for precision firearms used by snipers.

[0080] To address this, three symmetrical lugs for attaching a suppressor to the firearm can be provided, as in the case of the MP5 by the present applicant, which allows for three different mounting positions for the suppressor.

[0081] This can be improved by adding at least three lugs, at least one of which is asymmetrical, to the attachment and / or the connecting sleeve or other protruding element. These elements, i.e., the lugs, engage with complementary recesses formed in the connecting sleeve and / or the firearm component, so that the acoustic signature suppressor can only be mounted to the firearm component or barrel in a specific orientation.

[0082] The shooter places the connecting sleeve and the suppressor attached thereto onto the barrel or muzzle attachment of the firearm from above, and rotates the connecting sleeve until its recesses or lugs align and engage with complementary lugs or recesses.

[0083] This acoustic signature suppressor offers high reliability in its function, thereby improving the reliability of the firearm it is equipped with. In particular, the suppressor can be easily attached and detached in the dark without the use of tools, thanks to the tactile shape of its components and the stress-free operation of its mechanism.

[0084] In the present invention, the components of the firearm include barrel and muzzle attachments, such as flash suppressors, muzzle brakes, blank cartridge adapters, and the like.

[0085] In general, lugs can have an appropriate shape, such as a rounded shape or a shape with sharp corners. Asymmetrical lugs have a different shape from other symmetrical and identical lugs, that is, they can be larger or smaller, shorter or longer, and / or wider or narrower than the other lugs, and / or have a different external shape, such as having bulges and / or notches. Furthermore, only complementary recesses, and therefore asymmetrical recesses, are provided, and only asymmetrical lugs can engage with these recesses.

[0086] The asymmetrical shape of a lug can be easily created by making it longer or shorter and / or wider or narrower than the other two lugs. Thanks to the asymmetrical lug, the shooter can sense the correct mounting position of the suppressor, even in low light.

[0087] The linking interface may be a chuck or a collet. To enable the suppressor to be precisely positioned on the barrel or flash suppressor in a reproducible manner, at least one feature may be provided on the firearm that interacts with, specifically engages with, at least one complementary feature on the suppressor. For example, this may be a recess into which a projection engages, thereby restricting the suppressor to being mounted in only one position. These two features may have different shapes on the suppressor and the firearm, for example, a projection or recess on the barrel and a recess or projection on the suppressor.

[0088] The barrel may have positioning means coaxial with the bore axis, particularly in the form of a pin. This allows for precise and repeatable positioning, orientation, and mounting of a collet adapter, which may have complementary recesses. By positioning the collet adapter and sliding it into the positioning recess, a precise and repeatable connection can be ensured. The suppressor can only be mounted when the positioning means is fitted into this recess; otherwise, the shape automatically blocks mounting.

[0089] The collet adapter may have multiple slits around its circumference. After tensioning means, particularly a connecting nut, is positioned and screwed into place, the collet adapter is tightened onto the barrel or flash suppressor. This compresses the slits. Tightening can be done using a torque wrench, but it can also be done by hand. An acoustic signature suppressor can be connected to the connecting nut or the collet adapter.

[0090] Furthermore, a connecting sleeve can also be used to attach an acoustic signature suppressor, for example, using screw connections or some other conventional mounting means. The acoustic signature suppressor, barrel, or flash suppressor may have at least one asymmetric element at the muzzle end, in particular an asymmetric lug, and at least one symmetric element, in particular one or more symmetric lugs, which enable precise and repeatable positioning within the connecting sleeve, or precise and repeatable positioning of the connecting sleeve on the barrel or flash suppressor. The connecting sleeve may have an asymmetric recess for the asymmetric element and at least two recesses for the symmetric element. This is advantageous as positioning and connection can be performed in only one location.

[0091] After the lug is fully inserted, the connecting sleeve can be rotated to lock the lug in place within the undercut. The applicant reserves the right to seek independent protection for these or other modifications or designs.

[0092] The acoustic signature suppressor may also include at least one pressure relief valve for removing liquid and / or gas-liquid mixtures in the event of overpressure.

[0093] A pressure relief valve can be formed by a relief nozzle or opening facing forward and / or downward in the suppressor housing. Any other suitable type of pressure relief valve can also be used. This type of pressure relief valve can be located in one front baffle chamber, or in each baffle chamber. This is important if at least one drain hole is not completely closed when firing. Similarly, this pressure relief valve is important if the suppressor is filled with water or some other liquid and the drain hole is accidentally blocked, as the ability to drain the liquid through the relief valve ensures the shooter's safety.

[0094] Acoustic signature suppressors may also have drainage holes that are always open or cannot be closed, ideally located at the front end of the suppressor. This allows for the efficient removal of vaporized residual water and propellant gases, targeting them in the direction of firing.

[0095] Acoustic signature suppressors may also have protective devices to prevent damage to the suppressor caused by overpressure and / or uncontrolled firing of bullets when liquid is present inside the suppressor.

[0096] In a simple design of an acoustic signature suppressor, there are no drainage holes; instead, only a protective device is present.

[0097] The protective device can surround the acoustic signature suppressor and / or reinforce its housing so that the acoustic signature suppressor is not susceptible to damage from the liquid inside.

[0098] The protective device may be an integral part of the suppressor or may be detachable. The protective device may be made of any of the fiber-reinforced materials described below. If drainage holes are not present, one or more pressure relief valves may be present through which the liquid is forcibly discharged by the pressure of the propellant gas during firing. These pressure relief valves are optional. The applicant reserves the right to seek independent protection for these or other modifications or designs.

[0099] The protective device for an acoustic signature suppressor may form a thermal sleeve to prevent the suppressor from overheating and / or to protect the shooter. This thermal sleeve may be an integral part of the suppressor or a detachable part.

[0100] Thermal insulation sleeves can be made from a variety of suitable materials. For example, any composite material that provides sufficient thermal insulation against the heat generated during foaming can be used. Reinforcing materials in the composite material can include short fiber, long fiber, or continuous fiber reinforcement materials, carbon fiber, glass fiber, flexible ceramic, metal fiber, metal powder, aramid fiber, fibrous silicon dioxide, nanomaterials, etc.

[0101] Suitable matrix materials for composite materials include polyester, vinyl ester, epoxy, phenol, polyamide, polypropylene, and polyether ether ketone (PEEK). Heat-resistant resins such as MVK-19 ultra-high temperature polyimide resin are particularly ideal. Reinforced heat-resistant silicone elastomers or reinforced foams can also be used.

[0102] Because the aforementioned composite material remains stable even at high temperatures, it can withstand the high operating temperatures that occur when using an acoustic signature suppressor.

[0103] The heat shielding can at least partially surround the acoustic signature suppressor and can also be designed to prevent the bullet from flying in a direction other than the intended target.

[0104] Hereinafter, exemplary embodiments of the present invention will be described in further detail with reference to the drawings. [Brief explanation of the drawing]

[0105] [Figure 1] Figure 1 shows a schematic longitudinal cross-sectional view of a conventional acoustic signature suppressor. [Figure 2a] Figure 2a shows a schematic longitudinal cross-sectional view of another conventional acoustic signature suppressor. [Figure 2b] Figure 2b shows a schematic longitudinal cross-sectional view of another conventional acoustic signature suppressor. [Figure 2c] Figure 2c shows a schematic longitudinal cross-sectional view of another conventional acoustic signature suppressor. [Figure 2d]Figure 2d shows a schematic longitudinal cross-sectional view of another conventional acoustic signature suppressor. [Figure 2e] Figure 2e shows a schematic longitudinal cross-sectional view of another conventional acoustic signature suppressor. [Figure 3] Figure 3 shows a schematic longitudinal cross-sectional view of a first embodiment of the acoustic signature suppressor obtained by the present invention. [Figure 4] Figure 4 shows a schematic longitudinal cross-sectional view of a second embodiment of the acoustic signature suppressor obtained according to the present invention. [Figure 5] Figure 5 shows a schematic longitudinal cross-sectional view of a third embodiment of the acoustic signature suppressor obtained according to the present invention. [Figure 6] Figure 6 shows a schematic longitudinal cross-sectional view of a fourth embodiment of the acoustic signature suppressor obtained according to the present invention. [Figure 7a] Figure 7a shows a perspective view of another embodiment of the acoustic signature suppressor obtained according to the present invention. [Figure 7b] Figure 7b shows a perspective view of the embodiment of the acoustic signature suppressor shown in Figure 7a, with the colors arranged. [Figure 8] Figure 8 shows a perspective view of another embodiment of the acoustic signature suppressor obtained by the present invention, with the closing element in place. [Figure 9] Figure 9 shows a perspective view of another embodiment of the acoustic signature suppressor obtained by the present invention, with the closing element in place. [Figure 10a] Figure 10a shows a perspective view of another embodiment of the acoustic signature suppressor obtained according to the present invention. [Figure 10b] Figure 10b shows a perspective view of the embodiment of the acoustic signature suppressor shown in Figure 10a, with the colors arranged. [Figure 11a] Figure 11a shows a perspective view of another embodiment of the acoustic signature suppressor obtained according to the present invention. [Figure 11b]Figure 11b shows a perspective view of the embodiment of the acoustic signature suppressor shown in Figure 11a, with the seal in place. [Figure 12] Figure 12 shows a perspective view of another embodiment of an acoustic signature suppressor with color. [Figure 13] Figure 13 shows a perspective view of another two-component embodiment of the acoustic signature suppressor obtained according to the present invention. [Figure 14] Figure 14 shows a perspective view of another two-component embodiment of the acoustic signature suppressor obtained according to the present invention. [Figure 15] Figure 15 shows a color internal perspective view. [Figure 16] Figure 16 shows an internal perspective view of the closing element of the exemplary embodiment shown in Figures 8 and 90. [Figure 17] Figure 17 shows a perspective view of one embodiment of a coupling interface for attaching an acoustic signature suppressor to the barrel of a pistol. [Figure 18] Figure 18 shows a perspective view of another embodiment of a coupling interface for attaching an acoustic signature suppressor to the barrel of a pistol. [Figure 19] Figure 19 shows a perspective view of another embodiment of a coupling interface for attaching an acoustic signature suppressor to the barrel of a pistol. [Figure 20a] Figure 20a shows a perspective view of another embodiment of a coupling interface for attaching an acoustic signature suppressor to the barrel of a pistol. [Figure 20b] Figure 20b shows a perspective view of another embodiment of a coupling interface for attaching an acoustic signature suppressor to the barrel of a pistol. [Figure 21a] Figure 21a shows a perspective view of another embodiment of a coupling interface for attaching an acoustic signature suppressor to the barrel of a pistol. [Figure 21b] Figure 21b shows a perspective view of another embodiment of a coupling interface for attaching an acoustic signature suppressor to the barrel of a pistol. [Figure 22] Figure 22 shows a perspective view of a partially cut-out embodiment of the connecting interface shown in Figures 20a to 21b in its assembled state. [Modes for carrying out the invention]

[0106] After describing the overall function of the acoustic signature suppressor with reference to Figures 1-2e, the configuration and function of the acoustic signature suppressor obtained by the present invention will be described with reference to Figures 3-7.

[0107] Firearms, especially automatic-loading firearms, already exist and do not need to be explained here. The firing and automatic reloading functional sequence of automatic-loading firearms can be briefly explained as follows.

[0108] A breech mechanism exists within the firearm that can be moved longitudinally, allowing for the ejection of spent ammunition and reloading of the weapon. This breech mechanism is a slide formed on top of the breech. To fire, the breech mechanism loads the ammunition from the magazine into the chamber of the barrel. When the trigger is pulled, the firing pin strikes the rear of the ammunition, igniting the propellant, and the projectile is ejected from the shell, travels through the barrel, and fired.

[0109] When fired, the breech mechanism moves to the rear. The extractor grasps the edge of the shell at the bottom, and as a result of the breech mechanism's rearward movement, it pulls the shell out of the chamber. The kicker then ejects the shell in the conventional manner. As the breech mechanism moves to the rear, it slides over the magazine.

[0110] To load the ammunition cartridge, the upper parts of the front and rear walls of the magazine are partially cut away. The side walls of the magazine are extended upward to form a so-called magazine lip, which prevents the cartridge from falling out of the top of the magazine. A spring inside the magazine pushes the cartridge upward by biasing a push plate upward within the magazine housing. This pushes the cartridge out of the magazine and into the chamber.

[0111] As the breech slides forward, it pushes the top round out of the magazine and into the chamber. This cycle repeats when the trigger is pulled again for the next shot in single-shot mode, or automatically in automatic mode.

[0112] After the last round of ammunition is fired, the magazine can be removed in the conventional manner and replaced with a new one.

[0113] Acoustic Signature Suppressor 1 comes in numerous designs. These can be attached to the barrel (not shown) of a firearm (not shown) or to other attachments, such as a flash suppressor or muzzle brake (not shown), using conventional linking mechanisms. Acoustic Signature Suppressor 1 reduces the emission of noise during firing, as well as the blast and flash at the muzzle, to provide visual and acoustic suppression.

[0114] The acoustic signature suppressor 1, shown in the longitudinal cross-sectional schematic diagram of Figure 1, comprises a housing 3 having an interior 4. One end 5 of the suppressor 1 has a coupling interface 7 for attachment to a firearm. In a simple design, the coupling interface is threaded (see Figures 2a-e). A channel 11 for the bullet 9 passes through the interior 4, and the muzzle end 15 of the suppressor 1 has an exit hole 13 through which the bullet 9 exits the interior 4. The exit hole 13 is surrounded by the end face 17 of the suppressor 1.

[0115] The acoustic signature suppressor 1 functions as follows: upon firing, gas propels the projectile 9 through the gas flow 19, through the barrel of the firearm, and the projectile 9 enters and passes through the projectile channel 11 within the suppressor 1. The propellant gas expands inside the suppressor 1 without generating noise. This is schematically illustrated by the fine lines indicating the gas flow 19.

[0116] The gas is shown here as flowing ahead of the bullet, thereby forcing any residual liquid from the bullet's path out of the path and / or out of the suppressor.

[0117] To absorb energy from the propellant before it leaves the acoustic signature suppressor 1, a so-called baffle chamber 21 is present inside the housing 4, which cools the propellant by blocking the gas flow 19, thereby blocking noise generated by internal turbulence, and consequently reducing the velocity of the gas flow. The baffle chamber 21 is formed by baffles or deflection plates 23, which are positioned at the top and bottom of the interior 4 at an angle to the firing direction. The acoustic signature suppressor 1 also reduces recoil and muzzle flash.

[0118] Figures 2a-e show longitudinal cross-sectional views of various acoustic signature suppressors 1. These differ from the embodiment in Figure 1 in the design of the connecting interface 7 in the form of threads 25 that screw into the threads of the firearm barrel. Furthermore, the acoustic signature suppressors 1 in Figures 2a-e have different shapes of baffle chambers 21 and different orientations of baffle walls 23. In Figure 2a, they are inclined in the direction of firing; in Figure 2b, they alternate between being inclined in the direction of firing and in the opposite direction; in Figure 2c, they are inclined in the opposite direction of firing on both sides; in Figure 2d, they are K-shaped; and in Figure 2e, they are perpendicular to the direction of firing, in which case the first two chambers 21 from the left are larger, providing more space for the propellant to expand at the end of the weapon. Therefore, regarding the internal structure of the acoustic signature suppressor 1 obtained by the present invention, numerous designs are possible in addition to the embodiments shown herein, and the baffle chamber 21 and baffle wall 23 can be designed and positioned in any way depending on the specific application.

[0119] Figure 3 shows a schematic longitudinal cross-sectional view of a first embodiment of the acoustic signature suppressor 1 obtained according to the present invention. The baffle wall 23 basically forms a funnel shape that opens in the direction of firing. The connecting interface 7 can be threaded, or it can have a collet adapter (Figures 13, 14) or an asymmetric connecting interface (Figures 15a-17). Other means for mounting to a firearm can also be used. The first two baffle chambers 21 from the left are large, and the first baffle chamber 21 from the left is positioned perpendicular to the interior 4. There is also a basically rectangular drain hole 27 milled into the housing wall 3 of the acoustic signature suppressor 1. Depending on the size of the drain hole 27, liquid can be drained within a few seconds, usually within 1-3 seconds, after being removed from water.

[0120] The first four baffles from the left have four second drainage holes 29 at their bottom. These holes connect multiple baffle chambers 21, allowing liquid to be drained from these chambers towards the first baffle chamber 21 where the first drainage holes 27 are located. The second drainage holes 29 are large enough to allow drainage from these chambers 21 through the first drainage holes 27 within 1 to 3 seconds. Water may remain in the first two baffle chambers 21 from the right, but this does not affect the functional reliability during firing.

[0121] The embodiment of the acoustic signature suppressor 1 in Figure 4 differs from that in Figure 3 in that each baffle 23 has a second drain hole 29 for rapid drainage from all chambers.

[0122] The embodiment of the acoustic signature suppressor 1 in Figure 5 differs from those in Figures 3 and 4 in that the first drain hole 27 is larger and extends beyond the first two chambers 21 from the right to the third chamber 21. This also allows for rapid drainage from all chambers 21. The larger the drain hole 27, the faster the firearm and acoustic signature suppressor 1 can be drained after being removed from the water or liquid.

[0123] The embodiment of the acoustic signature suppressor 1 in Figure 6 differs from those in Figures 3, 4, and 5 in that the first drain hole 27 is larger and extends to the bottom of the housing 3, spanning all the chambers 21, almost reaching the muzzle end of the acoustic signature suppressor 1. Since all the chambers 21 are connected to the outside by the first drain hole 27, the second drain hole 29 and the internal paths between the chambers 21 are unnecessary in this embodiment.

[0124] Figure 7a shows a perspective view of another embodiment of the acoustic signature suppressor obtained by the present invention, equipped with a closing mechanism 30, and Figure 7b shows a perspective view of this embodiment. In this case, the first drainage holes 27 are four parallel slots at the bottom of the first chamber 21. Additionally, there are second drainage holes 29 at the bottom of each baffle near the lower wall of the housing.

[0125] The acoustic signature suppressor in Figure 7a also has a closing mechanism 30 with a collar 31 that forms a closing element. This can be rotated from the open position shown in Figure 7b to the closed position where the collar covers and seals the four drainage holes 19. The collar 31 has internal threads that interact with external threads 33 on the housing 3 of the acoustic signature suppressor 1, so that when rotated in the direction of arrow 35, it moves toward the barrel end 5 of the suppressor 1. There is a stop member 36 that snaps into place when the collar 31 reaches the end position.

[0126] A shooter, such as a diver or underwater operative, can carry a firearm fitted with the acoustic signature suppressor 1 while diving or swimming, with at least one drain hole open. Because the four drain holes 27 are located at the bottom of the suppressor 1, most of the water is expelled relatively quickly and quietly by gravity within seconds of surfacing. The shooter then closes the drain holes 27 by rotating the collar 31 as described above, and the firearm is ready to fire. The steeper the angle of the thread, the less rotation is required, so for example, only half a turn or one full turn may be needed.

[0127] Figure 8 shows a perspective view of another embodiment of the acoustic signature suppressor 1 obtained according to the present invention, which includes a closure element, and Figure 9 shows a perspective view of another embodiment of the suppressor 1 with a closure element.

[0128] These two embodiments differ from those in Figures 7a and 7b with respect to the design of the closing element. In these two cases, the closing element is a slider 37 that partially surrounds the suppressor. The slider can be rotated in Figure 8 and slid longitudinally in Figure 9. The slider 37 surrounds 1 / 4 to 1 / 3 of the outer circumference of the housing 3. In these two embodiments, there are rails 39 for the slider 37, which are located above and below the four drainage holes 27 in Figure 8 and parallel to the bore axis 12 of the suppressor 1 in Figure 9. There is a stopper member 36 into which the collar 31 snaps when closed.

[0129] The embodiment of the acoustic signature suppressor with color, shown in the perspective views of Figures 10a and 10b, differs from that of Figures 7a and 7b only with respect to the design of the first drain hole 27. Instead of four parallel drain holes 27, there is only one large drain hole 27 at the bottom of the housing wall, which extends at the bottom for about two-thirds of the length of the first chamber 21.

[0130] A seal (not shown) is provided on the outside of the housing 4 and / or on the inner surface of the closing element, i.e., the collar 31 or slider 37, or the half shell 41. This seal can be applied to part or all of the surface area. To obtain a reliable seal, the seal is reinforced at the edges of the closing element.

[0131] Figures 11a and 11b show perspective views of another embodiment of the acoustic signature suppressor 1 obtained by the present invention. This embodiment differs from that of Figures 10a and 10b with respect to the design of the first drain hole 27 and the closing element. In this case, a large drain hole 27 is present at the bottom of the housing wall, which extends across the first five chambers 21 from the left at the bottom of the housing 4. The last two chambers 21 are each connected to the first drain hole 27 by a second drain hole 29. The closing element is formed by a half shell 41, which can be moved back and forth along a rail 39 between an open and a closed state. In this case as well, there is a stop member (not shown) for fixing the half shell 41 in the closed state.

[0132] Figure 12 shows a perspective view of another embodiment of the acoustic signature suppressor 1, which includes a collar 31 that forms a closing element. This embodiment differs from those in Figures 10a and 10b with respect to the design of the first drain hole 27 and the size of the collar 31. This embodiment also has a large drain hole 27 at the bottom of the housing wall, which extends along the bottom of the housing 4 through the first five chambers 21, counting from the left. The last two chambers 21 are each connected to the first drain hole 27 by a second drain hole 29. The collar 31 extends along substantially the entire length of the suppressor 1 and moves along a coarse thread 33 between an open and closed state. In this case as well, there is a stop member 36 for fixing the collar 31 in the closed state.

[0133] Figure 13 shows a perspective view of another two-part embodiment of the acoustic signature suppressor obtained by the present invention. This embodiment differs from the embodiments described above, particularly those in Figures 7a and 7b, with respect to the two-part design of the housing 4 of the suppressor 1 and the design of the collar 31. This embodiment also has four drainage holes 27 at the bottom of the housing wall, which extend from the left to the first chamber 21 at the bottom of the housing 4. Each chamber 21 is connected to the first drainage hole 27, i.e., the first chamber 21, by a second drainage hole 29. The collar 31 extends along substantially the entire length of the suppressor 1 and can be moved from an open to a closed position along the coarse threads 33. In this case as well, there is a stopper member 36 for fixing the collar 31 in the closed position. The suppressor 1 is assembled by pressing or holding two parts together and connecting them by the collar 31 and the threads 33. The threads extend on both parts of the suppressor 1 but are not shown at all for clarity.

[0134] Figure 14 shows another perspective view of another two-part configuration embodiment of the suppressor obtained by the present invention. This embodiment differs from the above-described embodiment, particularly Figure 13, with respect to the two-part design of the housing 4 of the suppressor 1 and the design of the collar 31. This embodiment also has four drainage holes 27 at the bottom of the housing wall, which extend from the left to the first chamber 21 at the bottom of the housing 4. Each chamber 21 is connected to the first drainage hole 27 by a second drainage hole 29.

[0135] The collar 31 also extends along the length of the suppressor 1 and can be moved between an open and closed position along the coarse threads 33. In this case, the collar 31 is permanently attached to the housing part on the right side of Figure 14, or is an integral part of it. To assemble the suppressor 1, the right-side part is screwed into the left-side part, and they are connected to each other by the collar 31 and the threads 33. The threads extend only over the left-side part of Figure 14, but are not shown at all for clarity. In this way, the suppressor 1 can be kept in the open position by partially screwing in the collar 31. To close the drain hole 27, only the collar needs to be tightened.

[0136] Figure 15 shows a color internal perspective view, and Figure 16 shows an internal perspective view of the closure element shown in Figures 8 and 9. The collar 31 and the closure element 37 each have a recess 32 or groove 38 in their inner wall, which opens toward the projectile exit end, thus forming an open gap toward the muzzle. The groove 32 or 38 guides excess propellant toward the muzzle. When the collar 31 or slide 37 is closed, the center of the groove 32 or 38 is opposite to each of the one or more drainage holes 27. Even if the stop member is not reached when the collar 31 or slide 37 is closed, the groove 32 or 38 can still safely discharge any remaining propellant forward at the projectile exit end without endangering the shooter.

[0137] Figures 17-19 show perspective views of two embodiments of a coupling interface for attaching an acoustic signature suppressor to the barrel of a pistol or a flash suppressor mounted thereon.

[0138] The coupling interface is a chuck or collet 47. The muzzle end of the barrel 43 is shown schematicly. A pin-type positioning element 45 extends to the muzzle and is parallel to the bore axis. This positioning element 45 positions and orients the collet 47 in a repeatable manner during assembly, and the collet 47 has a complementary recess 49 for this purpose. When the positioning element is inserted into the recess 49, the collet 47 is coupled to the firearm in a precisely repeatable position. This is only possible if the positioning element 45 is in the recess 49, otherwise the collet would automatically block and would not be able to slide over the muzzle. After positioning, the coupling nut is tightened into the schematically illustrated threads, tightening the collet 47 to the barrel 43 and compressing the tension-applying slit 51. A torque wrench can be used for tightening, but it may also be tightened by hand. A suppressor 1 is not shown but is coupled to the nut.

[0139] The embodiments shown in Figures 18 and 19 differ from those in Figure 17 in that, instead of the positioning element 45 on the barrel 43, there is a recess 46 into which an internal positioning element 48 of the collet 47 fits. The barrel 43 may also be provided with a bevel. These two means allow the collet 47 to be positioned and oriented in a precisely reproducible manner during assembly. The barrel may also be provided with a first recess 53 in the form of a groove and / or a second recess 55 in the form of a dent, into which a complementary internal element of the collet 47 can engage. The collet may be positioned on or attached to the coupling interface. The suppressor 1 is not shown and is conventionally connected to a nut. The applicant reserves the right to claim independent protection for these or other modifications or embodiments.

[0140] Figures 20–21b illustrate another embodiment of the linking interface for attaching the acoustic signature suppressor 1 to the barrel of a pistol, and Figure 22 shows a cropped perspective view of a portion of the assembled linking interface embodiment shown in Figures 20a–21b.

[0141] The connecting sleeve 57 can be attached to the suppressor 1 by screw connections or other suitable conventional connection means (see Figure 22). The suppressor 1, barrel, or flash suppressor has one asymmetric lug 59 and two symmetric lugs 61 at its muzzle end for precise positioning within the connecting sleeve 57. The connecting sleeve 57 has a recess 63 for the asymmetric lug and two recesses 65 for the symmetric lugs. Thus, the lugs 59, 61 can only be positioned in one location within the sleeve 57, as shown in Figure 21a. After the lugs 59, 61 have been inserted sufficiently deep, the sleeve 57 can be rotated, and the lugs 59, 61 are locked in place in the undercuts 67. The applicant reserves the right to claim independent protection for these or other modifications or embodiments.

[0142] The acoustic signature suppressor obtained by the present invention, its use for ejecting liquids, and the firearms to which it is attached improve the level of safety of firearms, especially automatic-loading firearms, particularly when used after being removed from water or other liquids.

[0143] Those skilled in the art can derive further embodiments of the present invention from the following claims and drawings. [Explanation of symbols]

[0144] 1. Acoustic Signature Suppressor 3. Housing of the acoustic signature suppressor 4. Inside the housing 5. Barrel end of acoustic signature suppressor 7. Barrel end connection interface 9 bullets 11 bullet channels 12 Bore axis 13 Bullet exit hole 15. Muzzle tip of acoustic signature suppressor 17 End face 19 Gas flow 21 Baffle Chamber 23 Baffle wall 25 threads 27 Drainage holes in the housing wall 29 Baffle drain holes 30 Closing mechanism 31. Closure element; color 32 Recesses; grooves 33 Coarse thread 35 Directional arrows 36 End 37 Closing elements; slides 38 grooves / recesses 39 Guide rails 41. Closure element; half shell Recesses 42, 31 or 41 43 gun barrels 45 Elements on the gun barrel 47 Colette 49 Positioning recess on collet 51 Slit for applying tension on the collet 53 First positioning recess on the collet 55 Second positioning recess on the collet 57 Connecting sleeves 59 Asymmetrical rug 61 Symmetrical Rug 63 Recess for asymmetrical lugs 65 Recesses for symmetrical lugs 67 Undercut

Claims

1. A sound signature suppressor for firearms (1): - At least one housing (4) that penetrates the bullet channel (11), - At least one drain hole (27) formed at or near the weapon-side end of the housing (4), through which liquid can be discharged from the suppressor (1) and It has, When attached to a firearm, the acoustic signature suppressor (1) has at least one drain hole (27) that connects the inside (4) of the suppressor (1) to the outside, thereby draining the liquid inside (4) through one or more of the drain holes (27) to secure the bullet channel (11) and allowing the weapon to be safely fired within seconds.

2. The acoustic signature suppressor (1) according to claim 1, wherein the at least one drain hole (27) is sufficiently large and is positioned and designed to drain 50% to 60% of the internal volume (4) of the suppressor (1) within 1 to 6 seconds, preferably within 1 to 3 seconds.

3. The acoustic signature suppressor (1) according to claim 1 or 2, wherein the at least one drain hole (27) can be closed by a closing mechanism (30), the closing mechanism (30) having at least one closing element (31, 37, 41) designed to at least partially surround the acoustic signature suppressor (1).

4. The acoustic signature suppressor (1) according to claim 3, wherein the closing mechanism (30), in particular the at least one closing element (31, 37, 41), can be moved between a closed state and an open state by a connecting mechanism (33, 39).

5. The acoustic signature suppressor (1) according to claim 3 or 4, wherein the at least one closing element (31, 37, 41) can be closed by moving it radially and / or axially and / or obliquely and / or horizontally on the acoustic signature suppressor (1).

6. The acoustic signature suppressor (1) according to any one of claims 3 to 5, wherein the closing mechanism (30), in particular the closing elements (31, 37, 41), and / or the acoustic signature suppressor (1) has at least one seal for holding liquid.

7. The acoustic signature suppressor (1) according to any one of claims 1 to 6, wherein the at least one drain hole (27) is located at the bottom of the acoustic signature suppressor (1), and / or a net, grid, or fiber protective structure is present in or above the drain hole to prevent foreign matter from entering.

8. The acoustic signature suppressor (1) according to any one of claims 1 to 7, further comprising at least one baffle chamber (21), wherein at least one drain hole (27) connects the at least one baffle chamber (21) to the outside of the acoustic signature suppressor (1) in order to remove liquid.

9. The acoustic signature suppressor (1) according to any one of claims 1 to 8, wherein the at least one drain hole (27) connects at least two of the baffle chambers (21) to the outside of the acoustic signature suppressor (1) to remove liquid, and / or the at least two of the baffle chambers (21) are connected by at least one second drain hole (29) inside the acoustic signature suppressor (1).

10. The acoustic signature suppressor (1) according to any one of claims 1 to 9, wherein the recess (42) extends in whole or in part along the length of the acoustic signature suppressor (1) on the closing elements (31, 37, 41) and / or on the acoustic signature suppressor (1) to remove liquid and / or liquid-gas mixture in the direction of firing.

11. The acoustic signature suppressor (1) according to claim 10, wherein the recess (42) is narrower than the diameter of the at least one drain hole (27), has the same width as the diameter, or is wider than the diameter.

12. The acoustic signature suppressor (1) according to any one of claims 1 to 11, having a linking mechanism (47 to 67), wherein when the acoustic signature suppressor (1) is attached to the firearm, the acoustic signature suppressor (1) is precisely oriented with respect to the firearm in a reproducible manner using the linking mechanism (47 to 67).

13. The acoustic signature suppressor (1) according to any one of claims 1 to 12, further comprising at least one pressure relief valve for removing liquid and / or gas-liquid mixtures in the event of overpressure.

14. The acoustic signature suppressor (1) according to any one of claims 1 to 13, further comprising at least one device (31) for protecting the acoustic signature suppressor (1) from overpressure and / or preventing an uncontrollable bullet (9) from flying out of the acoustic signature suppressor (1) when there is liquid inside the acoustic signature suppressor (1).

15. The acoustic signature suppressor (1) according to any one of claims 1 to 14, wherein the protective device forms a heat-resistant sleeve (31) that forms the closing element (31) for protecting the acoustic signature suppressor (1) from overheating and / or protecting the shooter from heat.

16. The acoustic signature suppressor (1) according to any one of claims 1 to 15, wherein the heat-insulating sleeve (31) is designed to at least partially surround the acoustic signature suppressor (1) and to prevent the bullet from flying out in a direction other than the direction of firing.

17. A firearm to which an acoustic signature suppressor (1) according to any one of claims 1 to 16 is attached.

18. The firearm according to claim 17, wherein the acoustic signature suppressor (1) is mounted directly to the barrel or to the flash suppressor of the firearm in a precisely reproducible orientation.

19. Use of the acoustic signature suppressor (1) according to any one of claims 1 to 16 for removing liquid from the acoustic signature suppressor (1).

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