EP2247908A2 - Assemblage et silencieux pour armes à feu - Google Patents

Assemblage et silencieux pour armes à feu

Info

Publication number
EP2247908A2
EP2247908A2 EP09746893A EP09746893A EP2247908A2 EP 2247908 A2 EP2247908 A2 EP 2247908A2 EP 09746893 A EP09746893 A EP 09746893A EP 09746893 A EP09746893 A EP 09746893A EP 2247908 A2 EP2247908 A2 EP 2247908A2
Authority
EP
European Patent Office
Prior art keywords
housing
noise suppressor
noise
barrel
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.)
Withdrawn
Application number
EP09746893A
Other languages
German (de)
English (en)
Inventor
George Koumbis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2247908A2 publication Critical patent/EP2247908A2/fr
Withdrawn legal-status Critical Current

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
    • 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
    • F41A21/32—Muzzle attachments or glands
    • F41A21/325—Mountings for muzzle attachments

Definitions

  • This invention relates to an assembly and noise suppressor for rifles, automatic weapons, pistols, shotguns and similar firearms.
  • patents 832,695; 1,111,202; 1,140,578; 1,401,667; 4,341,283; 4,588,043; 4,920,854; 5,029,512; 5,164,535; 5,679,916; 5,753,846; 6,374,718; 6,575,074; 7,237,467 and 7,308,967 disclose various types of noise suppressor and/or silencer assemblies for firearms.
  • an assembly is attached to the receiver of the rifle or to the barrel adjacent the junction of the barrel and receiver so the assembly is supported independently of the end of the barrel from which the projectile emerges.
  • a rigid load bearing support which acts as a heat shield or stabilizer tube
  • the support comprises an imperforate sleeve connected to the receiver or to the receiver end of the barrel. In most embodiments, the sleeve is threaded onto the receiver.
  • the sleeve extends somewhat past the discharge end of the barrel.
  • a noise suppressor is fixed to the distal end of the sleeve and provides a passage aligned with the barrel passage so fired projectiles pass seamlessly through the noise suppressor.
  • the noise suppressor is preferably threaded onto the sleeve end.
  • the weight of the noise suppressor is transmitted by the sleeve to the receiver independently of the barrel so the weight of the noise suppressor does not distort the barrel nor affect the point of impact of projectiles.
  • the annulus between the barrel exterior and the sleeve interior provides an expansion chamber for cooling propellant gases thereby enhancing the silencing ability of the device.
  • the sleeve and noise suppressor are readily removable from the receiver, the device is easy to clean without sophisticated cleaning equipment.
  • projections on the inside of the sleeve abut the barrel near its discharge end damp barrel harmonic vibrations thereby promoting smaller impact groups.
  • a novel noise suppressor is made in either two or three parts so it can be easily detached from the weapon, disassembled and cleaned without contending with many individual components.
  • the noise suppressor is ideally suited for use with the sleeve surrounding the barrel as described above, it may be threaded or provided with an adapter to attach directly to the discharge end of a barrel in a conventional manner.
  • a further object of this invention is to provide an assembly including a noise suppressor which is supported from the receiver or barrel end adjacent the receiver, independently of the discharge end of the barrel .
  • Figure 1 is a side view of a conventional rifle which has been modified to receive an assembly of this invention
  • Figure 2 is a side view of a sleeve or tubular beam that is attached to the rifle of Figure 1;
  • Figure 3 is a side view of a noise suppressor attached to the end of the sleeve of Figure 2 ;
  • Figure 4 is a partial isometric view of the receiver end of a barrel modified in accordance with this invention.
  • Figure 5 is an isometric view of a barrel ring attachment of this invention.
  • Figure 6 is a broken isometric view of the receiver end of a sleeve or tubular beam providing, at its opposite end, an attachment for a noise suppressor
  • Figure 7 is a broken isometric view of the barrel end of the sleeve or tubular beam of Figure 2 ;
  • Figure 8 is an exploded isometric view of one embodiment of a noise suppressor
  • Figure 9 is an exploded cross-sectional view of the noise suppressing unit of the suppressor of Figure 8, the noise suppressing elements being shown in non-rotated positions and the tubular housing being omitted for purposes of illustration;
  • Figure 10 is an exploded cross-sectional view of the barrel discharge end, end of the tubular beam of Figures 3 and 5 and a noise suppressor;
  • Figure 11 is an isometric view of the entrance end of the noise suppressor of Figures 8 and 9;
  • Figure 12 is an exploded isometric view of another embodiment of a noise suppressor
  • Figure 13 is a view, similar to Figure 9, of the noise suppressor of Figure 12 illustrating the noise suppressing elements in non-rotated positions and eliminating the tubular housing for purposes of illustration;
  • Figure 14 is a side view of the rifle of Figure 1 with a tubular beam secured to the receiver around the outside of the barrel and a noise suppressor on the end of the tubular beam;
  • Figure 15 is a side view of another conventional firearm equipped with a conventional muzzle brake or flash suppressor;
  • Figure 16 illustrates the firearm of Figure 15 equipped with an assembly of this invention.
  • a rifle 10 is illustrated as of a bolt action type having a stock 12, a bolt 14, a receiver 16 and a barrel 18.
  • the rifle 10 will recognize the rifle 10 as being a conventional rifle known as a Fabrique National (FN) of the free floating barrel type where the barrel is attached to the receiver 16 but is slightly movable relative to the stock 12.
  • free floating barrel type rifles comprise the majority of modern "counter sniper" weapons, as well as for all versions of the M16 and its civilian version, the AR15.
  • the rifle 10 has been modified by incorporating an assembly 20 which includes a rigid imperforate sleeve or tubular beam 22 and a noise suppressor 24.
  • the sleeve 22 is fixed to the receiver 16 or to the barrel 18 adjacent its junction with the receiver 16 in any suitable manner, as by welding, mating threads, adhesives or the like.
  • the sleeve 22 is threaded onto the rifle 10 as explained more fully hereinafter. It will be seen that the sleeve 22 is independent of the barrel 18 or is, at least, independent of the discharge end of the barrel 18.
  • the sleeve 22 is threaded onto the rifle 10 as shown best in Figure 4 where the receiver 16 or the receiver end of the barrel 18 is machined to provide threads 26 for receiving one end of the tubular beam 22.
  • a barrel ring protector 28 shown in Figure 5 may be threaded onto the receiver 16 to hide the threads 26.
  • the carbon fiber composite material is made in any suitable manner and the components are commercially available.
  • a barrel ring attachment 32 is fixed in a proximal end of the beam 22 in any suitable manner, as by threading, adhesives, welding or the like.
  • the elongate section 28 may be made of carbon steel, stainless steel, aluminum alloy, titanium alloy, ceramics, ceramic composites or any other suitable metal or alloy depending on the requirements of the particular task at hand.
  • the threaded end of the sleeve 22 can be provided simply by threading the end of the sleeve.
  • the attachment 32 is metal such as stainless steel, carbon steel, titanium alloys, aluminum alloys or the like.
  • the attachment 32 includes female threads 34 sized to pass onto the external threads 26 on the sleeve 20 thereby securing the sleeve 20 to the receiver 16 of the rifle 10 or to the barrel end adjacent the receiver 16. It will be seen that the sleeve 20 connects to the firearm 10 independently of the discharge end of the barrel 18 so that supporting the noise suppressor 24 on the sleeve 20 does not distort the barrel 18.
  • the distal or discharge end of the tubular beam 22 receives a barrel aligner 36 which is secured in the inside of the tubular section 30 in any suitable manner, as by welding, threading, adhesives or the like.
  • the barrel aligner 36 includes a metal body 38 such as stainless steel, carbon steel, titanium alloys, aluminum alloys, ceramics, ceramic composites or the like.
  • the body 38 includes interior threads 40 for receiving threads of the noise suppressor 24 and a series of rigid inwardly directed projections or shoulders 42 which may be generally perpendicular to the barrel 18.
  • the inner ends of the projections 42 are spaced to slip over and abut a peripheral section 44 of the discharge end of the barrel 18. It will be seen that the projections 42 prevent the sleeve 22 from being installed backwards on the barrel 18 because they will interfere with a larger part of the barrel 18 near the receiver 16 so the threads 34 cannot engage the threads 26.
  • the noise suppressor 24 and sleeve 20 are arranged to allow propellant gases to flow into an annulus 46 between the interior of the sleeve 20 and the exterior of the barrel 18. This may be accomplished in a variety of ways, as by threading the noise suppressor 24 into the barrel aligner 36 so the threads bottom out before the noise suppressor 24 abuts the end 48 of the barrel 18.
  • the distance the noise suppressor 24 is spaced from the barrel end 48 is subject to considerable variation but need not be overly extensive because the volume of the annulus 46 is normally very large compared to the volume between the barrel end 48 and the noise suppressor 24. This allows the noise suppressor 24 to be shorter than conventional suppressors which are typically spaced several inches from the barrel end. In most embodiments, this distance may be on the order of an inch or so.
  • the elongate section 30 is a carbon fiber tube while the barrel ring attachment 32 and barrel aligner 36 are carbon steel which has been treated to be black.
  • the inside of the barrel aligner 36 has to be closely inspected to see that the projections 42 do not come directly out of the carbon fiber tube 30.
  • the noise suppressor 24 shown in Figure 8 is of an unusual or unconventional design comprising only three separate pieces, i.e. a tube or housing 50, a noise suppressing unit 52 closely received inside the housing 50 and a closure or end cap 54.
  • the noise suppressor 24 may be made of any suitable material compatible with the rifle 10
  • the housing 50 can be made of carbon fiber composite having a metal fitting 56 fixed on the entrance end of the noise suppressor 24 providing an opening 57 for passing a projectile, threads 58 for attachment to the barrel aligner 36 and threads 59 for attachment to the tubular housing 50.
  • the entrance end of the housing 50 includes a structure or groove 61 which is concave toward the muzzle end of the barrel 18 for more efficiently deflecting or directing propellant gases toward the annulus 46 provided by the sleeve 22 and barrel 18. It will be seen that the groove 61 is concave in a direction away from the exit end of the housing 50.
  • the noise suppressing unit 52 comprises a series of more-or- less identical noise suppressing segments 60 which are fused together, either by welding after machining, by machining a single billet or by casting the segments 60 as a single unit.
  • the noise suppressing segments 60 are shown best in Figure 9 and include a frustoconical baffle 62 providing an axial opening 64 therein of a size to pass a projectile from the barrel 18.
  • the frustoconical baffle 62 has a small diameter end facing the barrel end 48 and a pair of laterally or radially facing openings 66 communicating between an interior volume 68 and grooves 70 extending around the segment 60 as shown best in Figure 8.
  • Each succeeding baffle 62 deflects some of the propellant gas through the lateral openings 66 of the upstream segment 60.
  • the segments 66 are progressively offset relative to the upstream segment in order to slightly direct the gas in a rotating manner around the axis of the suppressor unit 52. The more gas movement created inside the suppressor 24, the more the gas is cooled. In addition, some of the gas gets trapped in the grooves 70 to the same effect.
  • the amount of angular offset may vary widely, a preferred amount of offset is in the range of 30-45° for more efficiently rotating propellant gas around the suppressor unit 52.
  • the end cap 54 is conveniently made of metal having an opening 71 aligned with the openings 57, 64 and threads 72 for attachment to threads 74 machined in the exit end of the tube 50.
  • the suppressor 24 comprises only three pieces so it may be disassembled simply by unscrewing it from the rifle 10, unscrewing the end cap 54 and allowing the noise suppressing unit 52 to fall out of the tube 50. These components can be rinsed off and reassembled as quickly. Because the interior of noise suppressors inherently accumulate propellant debris, the ability to quickly disassemble, clean and reassemble the suppressor 24 is a major advantage. In a combat situation where sand, grit, mud and the like will accumulate in the suppressor 24, this advantage is particularly important.
  • the sleeve 22 is first threaded onto the barrel 18 so the projections 42 slip over the peripheral end 44 of the barrel 18.
  • the tubular beam 20 becomes a heat shield and can stay on a rifle as such without installation of the noise suppressor 24 and thus without altering the noise of the rifle.
  • the bores 57, 64, 71 of the noise suppressor 24 align with the barrel bore 76.
  • the weight of the noise suppressor 24 is borne by the tubular beam 22 independently of the discharge end of the barrel 18.
  • there is one point of alignment between the barrel bore and the suppressor which are the threads between them.
  • there are three points of alignment i.e. the connection between the sleeve 22 and the barrel 18, the projections 42 abutting the muzzle end of the barrel 18 and the connection between the barrel aligner 36 and the noise suppressor 24. This inherently is a more reliable technique of sending projectiles down the center of the noise suppressor 24.
  • the only perfect noise suppressor is one that captures all of the gases generated by powder burning in the fired cartridge.
  • the propellant gases are partially trapped in chambers between the baffles 62 and a sizeable portion of the gases are redirected rearwardly into the annulus 46 or into the annulus between the side walls 70 and the housing 50. These redirected propellant gases cool off and thereby drastically reduce in volume thereby reducing the sound producing ability of the gases.
  • the redirected propellant gases leak off through the suppressor 24 in a conventional manner so the pressure generated in the annulus ultimately dissipates.
  • the sleeve 22 can be unthreaded from the receiver 16.
  • the inside of the sleeve 22 can accordingly be cleaned in any suitable manner.
  • a conventional rifle 78 which will be recognized by those skilled in the art as an M16 is modified by installing an installation sleeve 80 having threads to receive a sleeve 82.
  • a noise suppressor 84 is threaded onto the end of the sleeve 82. It will be seen that the sleeve 82 slips over the existing flash suppressor/muzzle brake rather than having to remove it as with conventional noise suppressors.
  • an existing flash suppressor or muzzle brake directs gas laterally before it reaches the suppressor 84 thereby making the suppressor 84 more effective.
  • Figure 16 shows that the suppressor 84 need not be the same diameter as the sleeve 82. It will be apparent that a sleeve and noise suppressor of this invention may be attached to firearms of almost any description.
  • a test firing was conducted on September 22, 2008 at a location near Corpus Christi, Texas at an outdoor shooting range. The temperature was 85 0 F on a sunny day with low humidity and no wind.
  • a Savage Arms Model 10FP, caliber 7.62 NATO (.308 Winchester) was fired by an experienced marksman and the trial was coordinated by a Production Manager experienced in quality control.
  • the rifle was equipped with a Harris bipod placed on a steel table with the shooter being seated.
  • the target was downrange 200 yards from the shooter.
  • the target was pressed wood backed paper with cross centers at 200 yards.
  • the ammunition was Federal Premium, Gold Medal Match, 168 grain Sierra Matchking, BTHP.
  • the scope was a Leopold MKIV, Police Tactical.
  • the noise suppressor 86 has exactly two separate pieces, i.e. a housing 88 and a combined noise suppressing and closure unit 90.
  • the housing 88 may be substantially identical to the housing 50 except the fitting 92 includes one set of external threads 94 for attachment to the barrel aligner 36 and a second set of internal threads 96 for receiving the threads 98 of the unit 90.
  • the unit 90 also includes a series of noise suppressing segments 100 fused together and an end cap 102 abutting the end of the housing 88.
  • the noise suppressor 86 has several advantages over the suppressor 24. First, the inside of the housing 88 need not be machined to provide threads to receive the end cap.
  • the suppressing unit 90 cannot be installed backwards. After seeing the noise suppressor 86, it will be apparent that the noise suppressor 24 may be modified by fusing the end cap 54 to the suppressing unit 52 and thereby reducing the number of separate pieces to exactly two. This also has the advantage of preventing misassembly of the noise suppressor 24.
  • noise suppressors 24, 86 are of unusual design, a more conventional noise suppressor can readily be adapted for use in this invention by attachment to the barrel aligner 36 with a suitable adapter coupling. It will also be apparent that the suppressors 24, 86 can be manufactured to thread directly onto the end of a conventionally threaded barrel or a suitable adapter may be provided to thread onto a barrel and receive the threads 56, 92.
  • threads are illustrated as connecting the sleeve and rifle and connecting the noise suppressor and sleeve, it will be understood that other suitable connectors may likewise be used, such as interlocking lugs or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

L’invention concerne un assemblage pour une arme à feu (10) qui inclut un manchon (22) connecté au récepteur ou à l’extrémité réceptrice du canon (18). Le manchon (22) s’étend au-delà de l’extrémité de décharge du canon (18) et comporte des projections s’étendant vers l’intérieur (42), appuyées contre une section périphérique (44) de l’extrémité de décharge du canon (18) ou juxtaposées à cette section. Un silencieux (24, 50) est fileté sur le manchon (22). Une partie des gaz propulseurs est redirigée, et refroidie par le silencieux (24, 50) de manière classique. Une partie des gaz propulseurs est redirigée vers une chambre annulaire (46), entre le canon (18) et le manchon (22), où ils sont refroidis et où une partie de leur volume est réduit, accroissant ainsi l’efficacité du silencieux (24, 50).
EP09746893A 2008-02-21 2009-02-19 Assemblage et silencieux pour armes à feu Withdrawn EP2247908A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6670508P 2008-02-21 2008-02-21
PCT/US2009/001062 WO2009139803A2 (fr) 2008-02-21 2009-02-19 Assemblage et silencieux pour armes à feu

Publications (1)

Publication Number Publication Date
EP2247908A2 true EP2247908A2 (fr) 2010-11-10

Family

ID=41319199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09746893A Withdrawn EP2247908A2 (fr) 2008-02-21 2009-02-19 Assemblage et silencieux pour armes à feu

Country Status (3)

Country Link
US (1) US20110297477A1 (fr)
EP (1) EP2247908A2 (fr)
WO (1) WO2009139803A2 (fr)

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US20140299405A1 (en) * 2013-01-11 2014-10-09 Acutech Firearm suppressor device
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US9410761B2 (en) * 2014-07-17 2016-08-09 Freedom Armory Inc. Suppressor with configurable baffles
US9097482B1 (en) * 2014-07-20 2015-08-04 Silencerco Llc Sound suppressor for a firearm
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US9857137B2 (en) 2014-12-26 2018-01-02 Sturm, Ruger & Company Silencer for firearm
US9835400B2 (en) 2014-12-26 2017-12-05 Sturm, Ruger & Company, Inc. Integrally suppressed barrel for firearm
US10480888B2 (en) 2014-12-26 2019-11-19 Sturm, Ruger & Company, Inc. Silencer for firearm
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Also Published As

Publication number Publication date
US20110297477A1 (en) 2011-12-08
WO2009139803A3 (fr) 2010-03-04
WO2009139803A2 (fr) 2009-11-19

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