EP3504501A1 - Dispositif neutralisateur de son pour arme à feu - Google Patents
Dispositif neutralisateur de son pour arme à feuInfo
- Publication number
- EP3504501A1 EP3504501A1 EP17737835.3A EP17737835A EP3504501A1 EP 3504501 A1 EP3504501 A1 EP 3504501A1 EP 17737835 A EP17737835 A EP 17737835A EP 3504501 A1 EP3504501 A1 EP 3504501A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- barrel
- sound
- passage
- movable
- firearm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/30—Silencers
Definitions
- the present invention relates to a firearm neutralizing device, particularly for a rifle or other long or short firearm, and a method of neutralizing sound for a firearm.
- the present invention more specifically relates to a sound neutraliser for a firearm, such as a rifle or another long or short firearm.
- the invention proposes a method of neutralizing the sound for a firearm, in particular for a rifle or another firearm when a shot is fired.
- the invention proposes a firearm, in particular a rifle, comprising an improved sound neutralizing device.
- the publication WO 96/03612 discloses a sound moderating device for Bail Trap rifle or recreation guns superimposed calibres.
- This gun silencer consists of a tubular body mounted on the barrel of the gun and comprising an annular expansion chamber behind said tubular body, and a series of transverse internal baffles supported by spacers and provided with openings passing through lead shot and wad.
- the silencer is designed to dampen noise and reduce noise pollution.
- the publications WO 201 1/0351 1 1 A1 and WO 2014/000805 disclose other examples of firearm silencers, in particular for automatic rifles or other long firearms, comprising a silencer mounting on the barrel of Parma. , a muzzle brake, which can be screwed to the muffler, being fixed to the barrel.
- Classic Silencer A classic sound silencer or moderator is a device that can be added to a firearm, gas or air, to reduce the noise and the flash of light it produces when a shot is fired, and thereby gain in discretion.
- the silencer generally takes the form of a cylindrical tube that can adapt to the muzzle of the barrel, and whose internal mechanism, which varies according to the ammunition used, allows to relax the gases used to propel the barrel. projectile, so as to minimize their release into the atmosphere.
- the silencer only slows the gas at the exit of the barrel, it does not interfere with the noise caused by the passage of the projectile at supersonic speed (speed higher than that of the sound which is about 340 m / s in the air at 15 ° C) which, passing the wall of sound, produces itself a sound of detonation on its course.
- the phenomenon is especially noticeable on high initial velocity calibres such as 5.56 mm.
- a muffler is especially a comfort tool because it reduces the muzzle wave of a gun.
- This mouth wave is the cause of ENT trauma, in the area of the nose, throat and ears, that can not be protected by the usual means (ear plugs, helmets ).
- ear plugs, helmets the two main factors affecting the value of the speed of sound are the density and the elasticity constant (or compressibility) of the propagation medium:
- the sound propagates exactly at 1,482,343 m / s in pure water at 20 ° C, approximately 340 m / s in air at 15 ° C and at about 1,500 m / s in seawater
- the efficiency of the silencers is relative: the sound reducer suppresses the mouth wave and consequently the detonation consistent and makes the sound more diffuse while removing the flame to the mouth of the weapon.
- moderator of sound is sometimes used; the performance of this type of device is very variable, depending on the type of reducer of his employee and Parma used. Shooting is not as far away, it is also harder to identify as a firearm shot as well as more difficult to locate because of both the deformation of the sound and the absence of a visible flame.
- the decrease in the intensity of the noise is of the order of 25 to 35 db in the case of an assault rifle, ie 1 to 125 db (comparable to a jackhammer) instead of 150 db.
- the classic silencers while being able to present different shapes and techniques, are nevertheless quite similar to each other, They are generally sleeves that Pon fixed, either by a bayonet system or by a screw thread, after cannon These sleeves, of a substantial size, have inside several gas expansion chambers that can mitigate the noise of the detonation with more or less success. The projectile, the gases and the residual sound wave come out through the mouth.
- the diameter of the holes separating the different elements of the silencer through which the projectiles pass being much larger than the caliber, they allow to escape towards the front of the projectile a part of the gas thus disturbing the accuracy of the projectile and decreasing its speed. about 4 to 6 m / s.
- the classic silencer is expensive, difficult to maintain (to clean it must be removed completely component by component), and for some rifle models, its life does not exceed 800 shots.
- the projectile passing the different baffles allows the gases behind it to relax in the cells and thereby reduce the intensity of the sound wave.
- the purpose of the present invention is therefore to provide a device for eliminating and completely inhibit the sound produced when a shot is fired. , letting it run out naturally and thus gain in discretion.
- the purpose of the device is to inhibit the sound wave (noise) generated by the ammunition of a firearm.
- the sound neutralizing device for a firearm comprises the characteristics of the characterizing part of claim 1.
- a sound-canceling device of the aforementioned type comprises:
- a shutter mechanism comprising at least one shutter (10) mounted transversely to the axis on the barrel (42) of firearm 42 to temporarily seal the barrel after the passage of a munition and prevent the passage of the combustion gases and the sound wave towards the mouth of the barrel when a blow is fired, an actuating unit (31, 34, 35) comprising a movable part (31) arranged axially on the gun barrel for setting in motion a control mechanism (6), the axially movable part (31) comprising an internal bore adapted to allow the passage of a munition,
- the control mechanism (6) comprising at least one amplitude lever arm (8) pivotally mounted on a pivot (7) fixed to the barrel, each amplitude lever arm (8) being respectively coupled to a flap (10) closing,
- the movable actuating unit (31, 34, 35) cooperating with the control mechanism (6) to allow transverse movement of the at least one closure flap (10) between an open position in which the flap mechanism ( 10) ensures the passage of the ammunition towards the mouth of the barrel (42) and a closed position preventing the passage of the combustion gases and the sound wave after the passage of the ammunition, and
- an exhaust unit (1 1, 21 -27) comprising at least one exhaust pipe (1 1, 21) disposed on the barrel upstream of the shutter mechanism (10) for redirecting and leaving the gases of combustion and the sound wave evacuate out of the barrel.
- closing shutter mechanism temporarily closes the barrel just after the passage of the projectile and redirects the combustion gases and the sound wave to an expansion tank for its final treatment .
- the actuating unit comprises a movable part (31) of the barrel, moved by the projectile as soon as it has fully passed through the flaps and extended by a rod connected to the ring of the barrel. ordered.
- the gun movable to ensure the motricity of the entire system, makes a small part of the gun movable.
- This part can be terminal or median.
- the projectile passes through the moving part (31), it is pushed axially forward into the part (38) of the barrel downstream by the pressure of the gas inside the barrel.
- the axial movement of the movable part (31) causes the shutters to close by means of the coupling of the amplitude lever arm (8) to the shutter mechanism (10).
- the moving part will be median at least on long weapons.
- the movable part In the case where the movable part is median, it makes the seal with the part of the barrel coming out of the seats of the shutters and the end part of the barrel.
- the inside of the barrel (in which the projectile moves) is broken down into 3 perfectly aligned parts.
- the moving part part has a covering part and a recovered part. In its overlapping part, the moving part covers the barrel, and in its recovered part it is covered by the final part of the barrel.
- the length of the part of the barrel that passes through the seat of the flaps has in principle a fixed length which is equal to the length of the ball.
- the moving part reproduces the part of the barrel that comes out of the shutters and it in turn covered.
- the final piece of the barrel that is grafted on the seats of the shutters will completely contain the moving part.
- the final part of the barrel can be very short.
- this final part forms the mouth of the barrel. It's the same configuration for both guns and chokes. While the mobile part is preferentially cylindrical and fairly short for shotguns, for mobile weapons the moving part preferably has the shapes, the drawings, and the length of a traditional choke.
- the control mechanism comprises a guide ring and transmission adapted to slide on the barrel, the ring cooperating with the rod of the movable part of the barrel to transmit the movement to the lever arms.
- the shutter (s) is / are arranged in a seat placed transversely to the axis of the barrel and of predetermined length and if there are two slightly offset between them along the axis of the barrel, so that in closed position they overlap partially without clashing.
- each flap comprises an opening adapted to receive the end of the amplitude lever arm to transmit the pivoting movement of the amplitude lever and actuate the flap in a transverse direction relative to the axis.
- the guide ring further comprises two wedge-shaped support pieces having an angled edge surface directed towards the flaps adapted to enable actuation lever arms pivoting on the pivots and closing flaps.
- control mechanism comprises at least a first return spring associated with the guide ring so that it returns to its initial position, the pressure of the gases decreasing.
- the exhaust unit further comprises an expansion vessel connected to said at least one exhaust pipe for receiving the gases conveyed by said at least one exhaust pipe, the vessel expansion chamber with openings to allow the combustion gases to escape from the expansion vessel.
- the expansion vessel comprises an inner tube connected to flaps adapted to close the openings, and in which the gases enter the expansion vessel through an opening in the inner tube once it has been pushed. at the end of the stroke and thus closed gills and, with the pressure down, the inner tube returns to its initial position thanks to a return spring thus allowing the combustion gases to escape from the expansion vessel through the gills when the sound base has run out naturally.
- the movable portion of the substantially cylindrical actuating unit joins a portion of the barrel that passes through the seat of the closure flaps and an end portion of the barrel, and has a covering portion and a recovered portion separated by a shoulder, the covering cylindrical portion being adapted to cover the portion of the barrel which passes through the flap seat, and the recovered cylindrical portion being adapted to be covered by the end portion of the barrel.
- the final part of the barrel comprises a housing comprising a first cylindrical portion adapted to receive the covering portion of the movable part and a second cylindrical portion of smaller diameter adapted to receive the recovered part of the moving part, the first part cylindrical and the second cylindrical portion of the end portion being separated by a shoulder.
- the first cylindrical portion of the end portion is longer than the cylindrical covering portion of the movable member to allow axial movement of the moving part, the second cylindrical portion of the end portion being substantially the same length as the cylindrical portion recovered. of the moving part.
- the covering portion of the movable part has an inside diameter corresponding to the outside diameter of the part of the barrel that passes through the seat, and has an outer diameter corresponding to the inside diameter of the first cylindrical portion of the end portion.
- the movable part of the substantially cylindrical actuating unit forms the end portion of the barrel and has a covering portion and a final portion separated by a shoulder, the cylindrical portion covering the moving part. being adapted to cover a portion of the barrel that passes through the seat of the closure flaps, and the end portion forming the mouth of the barrel.
- the covering part of the moving part comprises a housing having a cylindrical portion adapted to receive the cylindrical portion of the barrel through the flap seat and allow axial movement of the movable member, the cylindrical portion of the barrel being substantially the same length as the cylindrical portion covering the movable piece.
- the overlapping portion of the moving part has an inside diameter corresponding to the outside diameter of the part of the barrel that passes through the flap seat.
- the terminal movable piece at the barrel forms a choke whose internal diameter is reduced in the direction of the mouth of the barrel, the covering cylindrical portion covering the barrel, and the end portion comprising an internal conical portion of a maximum diameter equal to the inner diameter of the barrel and narrowing towards the area of the outlet of the barrel.
- a second pair of independent flaps of the first is located at the exit of the cartridge chamber, can be placed on automatic or semi-automatic weapons.
- automatic; these shutters mechanically actuated by the own ejection / reloading device of the weapon are used to prevent flue gas, sound tube and the flash to go out the breech open when ejecting the socket.
- This variant using a second pair of shutters for automatic or semi-automatic weapons can be used by itself for simple modification of a weapon without resorting to the sound inhibitor which, it requires at least the replacement or modification of the barrel.
- the sound neutralizing device for a firearm in particular for a rifle or another long or short firearm, comprises: at least one closure flap mounted transversely to the axis on the barrel the firearm to temporarily close the barrel after the passage of a projectile and prevent the passage of combustion gases and the sound wave towards the mouth of the barrel when a shot is fired, an actuating unit comprising a movable portion of the barrel downstream of the closure flap for moving the control mechanism through the passage of the projectile;
- control mechanism comprising at least one amplitude lever arm pivotally mounted on a pivot fixed to the barrel, the amplitude lever arm being coupled to the closure flap, the actuating unit cooperating with the control mechanism to allow transverse movement of the closure flap between an open position in which the flap ensures the passage of a munition towards the mouth of the barrel and a closed position preventing the passage of the combustion gases and the sound wave after the passage of the projectile, and an exhaust unit having at least one exhaust pipe disposed on the barrel upstream of the closure flap to redirect and allow the combustion gases and the sound wave to evacuate out of the barrel.
- the invention proposes a long or short firearm, in particular a rifle, comprising a neutralizing device of the aforementioned type in which the firearm barrel comprises a fastening system formed by said pivots and a seat disposed transversely to the axis of the barrel receiving said shutter mechanism to fix the neutralizing device to the barrel removably.
- the invention proposes a method of neutralizing the sound for a firearm, in particular for a rifle or another firearm when a shot is fired, the method comprising the steps of:
- control mechanism comprising at least one amplitude lever arm pivotally mounted on pivots attached to the barrel, the amplitude lever arm being coupled respectively to a closing flap,
- Sound waves during a shot There are in principle 3 sound waves that are generated by a shot. Two occur inside the barrel, and the last outside.
- the first sound wave is that produced by the combustion of the explosive charge.
- the second is the famous “bang” produced by the projectile when crossing the sound barrier, which is the case for about 96% of ammunition. This "bang" occurring inside the barrel, is not certain but supposed, but it is certain however that it never intervenes outside the barrel. In the human ear, these two sound waves are perceived as a single sound.
- the third occurs at the exit of the barrel projectile, like a lash in the air. It has an intensity of 72 to 80 db and can in no way be controlled.
- the burning of the powder gives off an immediate heat of 2500 to 3000 degrees Celsius, as well as 2 - 2.5 grams of gas which, uncompressed, give a volume of about 1, 12 m3.
- the sound wave produced by the combustion and the bang moves (at this temperature) to about 1500-1800m / s, immediate speed, while the projectile is still in phase of acceleration, this one not reaching its speed maximum after about 60 cm of stroke.
- the sound wave has three properties that interest us: the first is that, when it encounters an obstacle, it bounces (echo phenomenon), the second is that it does not spread in the empty, and the third and more interesting for the sound neutralizing device of the present invention is that it has an ephemeral life.
- the sound wave does not stick to the projectile, hitting it bounces back to the breech which in turn sends it back to the projectile. It then follows incessant comings and goings between these two obstacles until the exit of the projectile by the muzzle of the gun, with a variable speed, dependent on the temperature of the medium in which it evolves and that of the gases which convey it . At the exit of the barrel the sound wave then propagates in the air.
- the firearm sound suppressing device of the present invention has the advantage of weight (about 50 grams in total), cost of manufacture, and efficiency. According to the invention, the sound wave produced inside the barrel is completely annihilated, because retained behind the (s) flap (s).
- the firearm sound suppressing device of the present invention allows the sound wave to naturally destroy itself and deals primarily with the pressure generated by the gases. If there were no escapement provided by an exhaust pipe, the gases would remain compressed inside the barrel holding the shutter (s) closed. They would relax only at the opening of the rifle, without danger but with some inconvenience.
- FIG. 1 illustrates a sound neutralizing device for a firearm in one embodiment of the invention
- FIG. 2 represents a partial lateral sectional view of the device as represented in FIG. 1;
- FIG. 3 represents a side view before assembly of the device as represented in FIG. 1;
- FIG. 4 represents a partial side view of the part 38 of the device as represented in FIG. 1,
- FIG. 5 represents a partial sectional side view of the part 38 of the device as represented in FIG. 1;
- FIG. 6 represents a partial lateral view of the device as represented in FIG. 1,
- FIG. 7 represents a partial side view of the device as represented in FIG. 1,
- FIG. 8 illustrates a sound neutralization device for a firearm in another embodiment of the invention
- FIG. 9 represents a partial sectional side view of the device as represented in FIG.
- FIG. 10 represents a partial sectional side view of the device as represented in FIG. 8,
- FIG. 11 illustrates a sound neutralizing device for a firearm in another embodiment of the invention
- FIG. 12 represents a partial lateral view of the device as represented in FIG.
- FIG. 13 represents a side view of an exhaust unit of the sound neutralization device for a firearm in one embodiment of the invention.
- FIG. 1 illustrates a sound neutralizing device for a firearm in one embodiment of the invention.
- two shutters (10) for closing are mounted transversely to the axis on the barrel of the weapon to temporarily seal the barrel after the passage of a projectile and to prevent the passage of gases. of combustion and sonic sound to the mouth of the barrel (42) when a shot is fired.
- the shutters (10) are arranged in a seat (37) placed transversely to the axis of the barrel and are of predetermined length and slightly offset between them along the axis of the barrel, so that in the closed position they overlap partially without clashing.
- the control mechanism (6) comprises two amplitude lever arms (8) mounted on pivots (7) to allow transverse movement of the two shutters (10) closing between an open position in which the flaps (10) ensure the passing a projectile towards the mouth of the barrel and a closed position preventing the passage of the combustion gases and the sound wave after the passage of the projectile.
- the exhaust unit (1 1) has two exhaust pipes (1 1) arranged upstream of the shutters (10) to redirect and allow the combustion gases and the sound wave to escape from the barrel ( 42).
- the control mechanism (6) is positioned upstream of the flaps (10).
- the control mechanism (6) actuates the arms of amplitude levers (8) which close the flaps (10), thus allowing the gases to escape through the pipes (1 1).
- the flaps (10) (and their seat 37) are placed transversely to the axis of the barrel (42) and are of predetermined length and slightly offset between them according to the axis of the barrel, so that in the closed position they overlap partially without s 'clash.
- each flap (10) comprises an opening adapted to receive the end of the amplitude lever arm (8) to transmit the pivoting movement of the amplitude lever (8) and to actuate the flap (10) in a transverse direction relative to the axis of the barrel (42).
- the element (6) of the actuating mechanism is set in motion in a direction generally parallel to the axis of the barrel (42).
- control mechanism (6) comprises a guide ring (6) adapted to slide on the barrel and connected to the rod of the movable portion of the barrel (31) to transmit the movement to the lever arms (8).
- the guide ring (6) further comprises two base pieces disposed laterally to the axis of the barrel (42) each forming an elongated opening for receiving the end one of the lever arms (8) and having an angled (rectilinear or curvilinear) guiding surface directed towards the flaps (10) adapted to enable the lever arms (8) to be pivotally actuated on the pivots (7). ) to close and open the shutters (10).
- the guide ring (6) comprises two wedge-shaped base pieces arranged laterally to the axis of the barrel (42) and having an angled edge surface (rectilinear or curvilinear) directed to the flaps (10) adapted to enable the lever arms (8) to pivot on the pivots (7) to close and open the flaps (10).
- the two flaps (10) close the barrel after the passage of the ball, so that the sound wave and gases are redirected to an expansion tank.
- a second pair of flaps can be used to close the barrel at the base in case of automatic or semi-automatic weapons.
- the control ring (6) is actuated by the passage of the projectile after the flaps in a small portion (31) of gun which is movable and connected to the control ring (6) by a rod.
- This portion (31) of the barrel (of the same caliber as the latter) is placed after the flaps (10) at a distance from them equal to the length of the body of the projectile (without its possible tip).
- This piece (31) is movable and moves about 0.5mm, which serves to close the flaps (10) immediately after the passage of the ball.
- the proportion of the amplitude levers depends on the caliber of the weapon, the maximum being 10 for a 12-caliber single-barrel or superimposed, 20 for a 12-gauge juxtaposed (lateral), because for this weapon we are obliged to have only one component (10).
- the repositioning in the normal position of the parts (31, 6, 8 and 10) is ensured by a return spring (32).
- the control mechanism (6) comprises a transmission rod and the movable portion (31) has a coupling assembly (34-36) for moving the control ring (6).
- All coupling (34-36) comprises a connecting arm (34) fixed to the movable part (31) by a connecting screw (35) and secured to the transmission rod by a bolt and nut (36).
- FIGS. 6 and 7 which are partial side views of the device as shown in FIG. 1, the elongated opening in the transmission rod allows axial adjustment of the position of the rod. relative to the connecting arm (34) and to the movable part (31) by tightening the nut (36).
- the transmission rod is positioned in a direction generally parallel to the axis of the barrel defining the direction of the projectile.
- the movable part (31) is axially actuated and allows the transmission of the movement to the control mechanism (6) by coupling to the coupling assembly (34-36) and to the transmission rod .
- the control mechanism (6) with the rod is associated with a return spring (32) disposed on a fixing anchor (33) to the barrel.
- the axial force on the piece (31) decreasing, the rod and the control mechanism (6) returns to its initial position with the return spring (32).
- the addition is done either by screwing, welding, nesting or by any other means.
- the piece (31), in extension of the barrel, is movable, its beginning being located after the flaps (10) to a exact distance corresponding to the length of the body of the projectile.
- the projectile crossing it gives him an axial movement which actuates the entire device and causes the complete and immediate closure of the flaps (10).
- the gases and the sound wave are thus deflected by the exhaust (1 1) for their treatment.
- the projectile continues its course in the part (38) of the weapon, which is the extension of the gun.
- the axial force produced on the part (31) by the projectile being far superior to the needs of the device can be reduced by either judiciously increasing the diameter of said part (31) which is in principle of the same caliber as the barrel, or by adding a spring (not shown) around the right part of the piece (31) that enters the piece (38), or both.
- the moving part (31) is median to the barrel.
- This movable part (31) makes the seal with the portion of the barrel (42) coming out of the seats (37) of the flaps (10) and the end portion (38) of the barrel.
- This movable piece (31) is cylindrical and has an inner bore adapted to allow the passage of a ball.
- the inside of the barrel in which the projectile moves is decomposed into 3 parts (42,31, 38) which must be perfectly aligned.
- the cylindrical movable piece (31) has a covering portion and a recovered portion separated by a shoulder.
- the movable part (31) covers the barrel (42), and in its recovered cylindrical part it is covered by the final part (38) of the barrel.
- the length of the portion of the barrel (42) which passes through the seat (37) of the flaps (10) has a fixed length which is equal to the length of a bullet for this type of weapon. If the part of the piece (31) instead of covering was covered, it could then move back inside the part (42) and thus prevent the flaps (10) to close properly.
- the part (31) reproduces the part (42) coming out of the shutters (10) and it in turn covered.
- the piece (38) which is grafted on the seats (37) of the flaps (10) will contain the piece (31) in its entirety ( Figures 2 and 5).
- the end portion (38) of the barrel comprises a housing having a first cylindrical portion adapted to receive the portion covering the movable piece (31) and a second cylindrical portion of smaller diameter adapted to receive the recovered portion of the movable piece (31).
- the first cylindrical portion and the second cylindrical portion of the final portion (38) are separated by a shoulder.
- the first cylindrical portion of the end portion (38) is longer than the overlying cylindrical portion of the movable member (31) to allow axial movement of the movable member (31).
- the second cylindrical portion of the end portion (38) may be of the same length as the recovered cylindrical portion of the movable member (31).
- the final part (38) of the barrel can be very short.
- the overlapping portion of the movable member (31) has an inner diameter corresponding to the outer diameter of the portion of the barrel (42) which passes through the seat (37), and has an outer diameter corresponding to the inside diameter of the first cylindrical portion of the final part (38).
- the recovered portion of the movable member (31) has an inner diameter corresponding to the inside diameter of the portion of the barrel (42) which passes through the seat (37), and has an outer diameter corresponding to the inside diameter of the second cylindrical portion of the final part (38).
- the assembly can in particular be done so that the device (31, 37.38) is incorporated in the weapon to its manufacture.
- the seat (37) flaps (10) is attached to the portion 38 of the weapon, which is the extension of the barrel.
- the right part of the movable piece (31) is inserted between the seat (37) and the piece 38.
- the connecting arm (34) and the piece (35) are added to the piece 31 after assembly.
- the part (38) of the device as shown in Figure 1 forms the end portion (38) of the barrel and comprises a portion provided for assembly to the seat (37) flaps (10) and to receive the moving part (31).
- the caliber of the gun is the same on all its length whereas on the majority of shotguns the gun ends with a narrowing called choke, of different dimensions according to the desired performance.
- the alternative for shotguns is to use a mini-piece (38) at the outer end of which is screwed a choke ( Figure 10) of the aforementioned type forming a constriction or narrowing to mount on the barrel to reduce the diameter of exit, so as to increase the range of the shot and to limit the projected spray shot.
- Figures 8, 12 and 9 (exploded) show a movable part (31) mounted in the final part of the barrel. It's the same configuration for both bullets and chokes. While for ballguns, the part (31) will be cylindrical and quite short, for shotguns the part (31) will have the shapes, configurations, and length of a traditional choke ( Figure 10).
- the movable piece (31) terminates at the barrel.
- This movable piece (31) is mounted on the portion of the barrel (42) out of the seats (37) of the flaps (10).
- This movable piece (31) is cylindrical and comprises a piercing interior adapted to allow the passage of a ball.
- the inside of the barrel in which the projectile moves is decomposed into two parts (42,31) which must be perfectly aligned.
- the cylindrical movable piece (31) has a covering portion and a final portion separated by a shoulder.
- the movable part (31) covers the barrel (42), and in its final cylindrical part it forms the mouth of the barrel.
- the part (31) reproduces the part (42) coming out of the flaps (10) .
- the piece (31) is grafted on the portion (42) coming out of the flaps (10) ( Figure 9).
- the covering part of the movable part (31) comprises a housing comprising a cylindrical part adapted to receive the cylindrical part of the final part (42) of the barrel and allow the axial movement of the moving part (31). .
- the cylindrical portion of the end portion (42) may be of the same length as the cylindrical covering portion of the movable member (31).
- the final part (38) of the barrel can be very short.
- the overlapping portion of the movable piece (31) has an inside diameter corresponding to the outside diameter of the portion of the barrel (42) which passes through the seat (37).
- the movable piece (31) is barrel-ended and forms a choke used in particular for shotguns, the choke forming a passage for the lead, which extends in the barrel extension and whose the internal diameter is reduced towards the mouth of the barrel.
- the cylindrical movable piece (31) has a covering portion and a final portion separated by a shoulder.
- the movable part (31) covers the barrel (42), and in its final part forming the mouth of the barrel it comprises a conical portion having a maximum diameter equal to the inner diameter of the barrel and narrowing towards the zone of the outlet.
- Figure 1 1 is similar to Figures 8,12,9 and has a reinforced version of the portion (31) in the end position.
- the bullet length of the shot rifles corresponds approximately to the length of the flock. This is based on the ammunition used and the length of the rifle chamber. The length of the latter is 68mm (almost obsolete), 70mm, 76mm and 82mm. It goes without saying that a longer chamber can use shorter sockets, the opposite being in principle impossible and not recommended.
- the length of a skirt flock for a 70mm ammunition is about 40mm. Part 6 provides adjustment for adaptation.
- an expansion vessel with timer (22-27) is associated with the exhaust pipes (21) for the treatment of recovered gases and inhibition of the sound wave.
- Other solutions are possible.
- the expansion vessel (27) is coupled to the exhaust pipes (21) and has an internal axis (23) which is moved by the pressure of the gases to redirect these gases.
- the expansion tank 27 receives the gases conveyed by the recovery pipes (21) which enter the expansion vessel 27 through the opening (22) made on the shaft (23) once the latter was pushed to the end of stroke and thus closed the openings (24).
- a pressure relief valve (25) is present (but could be replaced by small holes). With the pressure down, the axis returns to its initial position thanks to the return spring (26) and the gases are evacuated through the gills (24).
- the final goal of the device achieved by the invention described here is the inhibition of the sound wave produced by the firing of the ammunition (gunshot).
- This shutter for the inhibition of the sound wave produced by the firing of the ammunition prevents the release of combustion gases and sound waves through the mouth of the barrel by deflecting them to a treatment zone adequate, while leaving intact the prerogatives specific to ammunition (speed, precision).
- a sound wave has an ephemeral life
- the sound waves follow the projectile; although the speed of sound in gaseous medium is variable (it can reach very high values depending in particular on the temperature of the gases), the sound wave does not stick to the projectile inside the barrel; if its velocity is greater than that of the projectile, there is back-and-forth of this wave inside the barrel.
- the speed of the projectile can vary between 250 and 950m / s according to caliber and type of ammunition.
- the mechanism consists preferentially:
- the flap valve (a flap or double flap) will close the barrel just after the passage of the projectile after it has traveled between 0.5 and 1 mm after the flaps, this distance being freely chosen by the amplitude coefficient applied to the levers. Successful tests are:
- control device kinetic kinetics by projectile thrust
- the residual noise is that caused by the projectile whipping the air.
- the motricity of the device is ensured only by the passage of the ball in the piece (31) which is movable (displacement of the order of a millimeter max.).
- the section of the barrel is very slightly smaller than the caliber of the bullet, this to ensure a lateral seal so as to make the most of the pressure of the gases.
- the moving part (31) actuates the control ring (6) which, by moving also from left to right, closes the shutter (s) (10) by means of the lever arms (8).
- the gases and the sound wave are thus deflected by the exhaust (s) (1 1).
- Parts (31, 6, 8 and 10) return to the initial position by means of the return spring (32).
- the device is incorporated in the barrel during its manufacture (in which case the device is well before the mouth of the barrel, and thus one adds a barrel end after the piece (31), or the piece 38 ) - illustrated by the drawings (Fig.2) or then we append the device at the end of the barrel on the mouth side (Fig. 8) in extension of the existing or in place of a part of the existing, after the have shortened accordingly.
- This addition can be done by several methods: brazing, screwing, bayonet etc).
- the proportion of arms of amplitude depends directly on the caliber of the weapon: 1 to 4 for an 8 mm (bullet), 1 to 1 0 for a 1 2 caliber (shot), and will therefore be fixed.
- the closure mechanism consists of lever arms (8) actuated by a piece (6) whose shape can be variable.
- the projectile Once the projectile passed at the height of the shutters, they close directly behind and the gases are directed towards one or two exhaust pipes leading to an expansion tank with timer.
- the gases conveyed by the recovery pipes (21) penetrate into the expansion vessel through the opening (22) made on the shaft (23) once it has been pushed to the end of stroke and thus closed the openings (24).
- a pressure relief valve (25) is present (but could be replaced by small holes). With the pressure down, the axis returns to its initial position thanks to the spring (26) and the gases are evacuated by the ears.
- the projectile enters a moving part of the barrel (31) pushing it forward.
- the rod of this portion (31) being connected to the ring (6) pulls it forward which has the effect of actuating the lever arms (8) on the pivots (7) which will close the flaps (10). , the gases being thus diverted towards the exhaust (1 1), and then treated in the expansion tank (27).
- this expansion vessel (27) may be of any shape and made of any material, solid or elastic; it can be applied anywhere on the weapon (for example laterally on the barrel or below);
- the shutter device will be operated by linkage.
- the setting in motion of the entire device will be controlled by the thrust that the projectile exerts on the moving part of the barrel (31).
- the amplitude coefficient will be calculated according to the caliber so that the shutters close immediately after the passage of the projectile allowing it to advance less than one millimeter.
- junction evacuation 22 opening on axis 25 23 axis and flaps
- All pieces, their shape and their positions can vary to infinity.
- the recovery pipes or exhaust can be reduced to one and not necessarily tubular, the expansion vessel be of different shape, the control 6 represented by a complete circular ring could be in a circular arc, etc.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Pipe Accessories (AREA)
- Toys (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RS20201440A RS61121B1 (sr) | 2016-08-29 | 2017-07-14 | Neutralizator zvuka za vatreno oružje |
SI201730516T SI3504501T1 (sl) | 2016-08-29 | 2017-07-14 | Dušilna naprava za strelno orožje |
HRP20201908TT HRP20201908T1 (hr) | 2016-08-29 | 2020-11-30 | Prigušujuća naprava za vatreno oružje |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU93184A LU93184B1 (fr) | 2016-08-29 | 2016-08-29 | Dispositif neutralisateur de son pour arme à feu |
PCT/EP2017/067876 WO2018041462A1 (fr) | 2016-08-29 | 2017-07-14 | Dispositif neutralisateur de son pour arme à feu |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3504501A1 true EP3504501A1 (fr) | 2019-07-03 |
EP3504501B1 EP3504501B1 (fr) | 2020-09-02 |
Family
ID=56889123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17737835.3A Active EP3504501B1 (fr) | 2016-08-29 | 2017-07-14 | Dispositif neutralisateur de son pour arme à feu |
Country Status (20)
Country | Link |
---|---|
US (1) | US20190249943A1 (fr) |
EP (1) | EP3504501B1 (fr) |
JP (1) | JP2019526779A (fr) |
CN (1) | CN109844443A (fr) |
BR (1) | BR112019004131A2 (fr) |
CA (1) | CA3034443A1 (fr) |
CY (1) | CY1123553T1 (fr) |
DK (1) | DK3504501T3 (fr) |
EA (1) | EA036578B1 (fr) |
ES (1) | ES2828312T3 (fr) |
HR (1) | HRP20201908T1 (fr) |
HU (1) | HUE051791T2 (fr) |
LT (1) | LT3504501T (fr) |
LU (1) | LU93184B1 (fr) |
MX (1) | MX2019002389A (fr) |
PL (1) | PL3504501T3 (fr) |
PT (1) | PT3504501T (fr) |
RS (1) | RS61121B1 (fr) |
SI (1) | SI3504501T1 (fr) |
WO (1) | WO2018041462A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11927410B2 (en) * | 2021-09-27 | 2024-03-12 | Jacob KUNSKY | Firearm suppressor with remote chamber |
US11976896B2 (en) * | 2022-02-25 | 2024-05-07 | True Velocity Ip Holdings, Llc | Firearm muzzle brake with gas-actuated valve |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE129989C (fr) * | ||||
US1331474A (en) * | 1919-07-11 | 1920-02-17 | Shaverksha D Master | Gun |
BE347810A (fr) * | 1927-04-27 | |||
FR634990A (fr) * | 1927-05-05 | 1928-03-03 | Appareil destiné à atténuer le bruit et le recul des canons, mitrailleuses et carabines | |
BE345878A (fr) * | 1927-09-01 | 1900-01-01 | ||
DE2238834A1 (de) * | 1972-08-07 | 1974-02-14 | Ernst Kitzmann | Schalldaempfer fuer waffen verschiedener art |
FR2719937B1 (fr) | 1994-05-16 | 1996-08-02 | Bernard Louvat | Dispositif modérateur de son. |
JP3024698B2 (ja) * | 1997-06-24 | 2000-03-21 | パラマウントベッド株式会社 | ベッド等におけるフレーム構造 |
US8162100B2 (en) | 2009-09-18 | 2012-04-24 | Jonathon Shults | Firearm sound suppressor |
CN102735099A (zh) * | 2012-06-14 | 2012-10-17 | 浙江新华体育器材制造有限公司 | 一种带有消音器的射击枪械 |
EP2867607B1 (fr) | 2012-06-28 | 2016-08-10 | Steindl, Andreas | Silencieux pour une arme portative |
CN203518810U (zh) * | 2013-11-07 | 2014-04-02 | 梁启明 | 狙击步枪消声器 |
CN105157473B (zh) * | 2015-08-18 | 2017-03-22 | 西南大学 | 一种可改变出膛力度的防暴枪 |
-
2016
- 2016-08-29 LU LU93184A patent/LU93184B1/fr active IP Right Grant
-
2017
- 2017-07-14 CA CA3034443A patent/CA3034443A1/fr not_active Abandoned
- 2017-07-14 PT PT177378353T patent/PT3504501T/pt unknown
- 2017-07-14 MX MX2019002389A patent/MX2019002389A/es unknown
- 2017-07-14 HU HUE17737835A patent/HUE051791T2/hu unknown
- 2017-07-14 PL PL17737835.3T patent/PL3504501T3/pl unknown
- 2017-07-14 SI SI201730516T patent/SI3504501T1/sl unknown
- 2017-07-14 BR BR112019004131A patent/BR112019004131A2/pt not_active Application Discontinuation
- 2017-07-14 LT LTEP17737835.3T patent/LT3504501T/lt unknown
- 2017-07-14 RS RS20201440A patent/RS61121B1/sr unknown
- 2017-07-14 EP EP17737835.3A patent/EP3504501B1/fr active Active
- 2017-07-14 ES ES17737835T patent/ES2828312T3/es active Active
- 2017-07-14 WO PCT/EP2017/067876 patent/WO2018041462A1/fr active Application Filing
- 2017-07-14 JP JP2019531541A patent/JP2019526779A/ja active Pending
- 2017-07-14 CN CN201780063483.1A patent/CN109844443A/zh active Pending
- 2017-07-14 US US16/329,319 patent/US20190249943A1/en not_active Abandoned
- 2017-07-14 EA EA201900131A patent/EA036578B1/ru not_active IP Right Cessation
- 2017-07-14 DK DK17737835.3T patent/DK3504501T3/da active
-
2020
- 2020-11-25 CY CY20201101117T patent/CY1123553T1/el unknown
- 2020-11-30 HR HRP20201908TT patent/HRP20201908T1/hr unknown
Also Published As
Publication number | Publication date |
---|---|
BR112019004131A2 (pt) | 2019-05-28 |
HUE051791T2 (hu) | 2021-03-29 |
CY1123553T1 (el) | 2022-03-24 |
EA036578B1 (ru) | 2020-11-25 |
PT3504501T (pt) | 2020-11-17 |
JP2019526779A (ja) | 2019-09-19 |
LT3504501T (lt) | 2020-11-10 |
RS61121B1 (sr) | 2020-12-31 |
MX2019002389A (es) | 2019-09-06 |
CN109844443A (zh) | 2019-06-04 |
EP3504501B1 (fr) | 2020-09-02 |
US20190249943A1 (en) | 2019-08-15 |
CA3034443A1 (fr) | 2018-03-08 |
LU93184B1 (fr) | 2018-03-28 |
EA201900131A1 (ru) | 2019-11-29 |
WO2018041462A1 (fr) | 2018-03-08 |
PL3504501T3 (pl) | 2021-03-22 |
HRP20201908T1 (hr) | 2021-01-22 |
SI3504501T1 (sl) | 2020-12-31 |
DK3504501T3 (da) | 2020-11-30 |
ES2828312T3 (es) | 2021-05-26 |
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