WO2013147959A2 - Cancellation muzzle brake assembly - Google Patents
Cancellation muzzle brake assembly Download PDFInfo
- Publication number
- WO2013147959A2 WO2013147959A2 PCT/US2013/000008 US2013000008W WO2013147959A2 WO 2013147959 A2 WO2013147959 A2 WO 2013147959A2 US 2013000008 W US2013000008 W US 2013000008W WO 2013147959 A2 WO2013147959 A2 WO 2013147959A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ports
- brake assembly
- muzzle
- firearm
- bore
- Prior art date
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
- F41A21/36—Muzzle attachments or glands for recoil reduction ; Stabilisators; Compensators, e.g. for muzzle climb prevention
Definitions
- the present disclosure is directed generally to a muzzle brake assembly for mounting on a muzzle of a firearm to provide a reduction in the felt recoil and muzzle jump of the firearm upon firing, while additionally providing a reduction in sound levels produced by discharge of a round of ammunition as compared to other muzzle brake devices.
- Muzzle brakes for firearms such as rimfire or centerfire rifles typically include ports or baffles in an attempt to reduce recoil and muzzle movement such as muzzle rise upon discharge of the firearm.
- these muzzle brakes significantly increase the resultant sound volume upon discharge of a firearm as compared with the use of no muzzle brake on the firearm. This can lead to hearing problems for shooters exposed to such increased sound volumes.
- many muzzle brakes available are complicated and costly to manufacture, and can provide limited recoil reduction.
- the present disclosure addresses the foregoing needs and provides for a muzzle brake assembly that enables several benefits, including an ability to reduce firearm recoil by redirecting the propellant gases in a new manner, substantial reduction or elimination of muzzle movement and/or an increased muzzle braking assembly effect provided upon discharge of a round of ammunition from the firearm, lessening or maintaining the acoustic signature of the firearm as compared to conventional brake designs, and which has a relatively easy and low cost of manufacture by current machining practices, thereby minimizing cost of manufacturing.
- the muzzle brake assembly for a firearm includes a body adapted to be coupled to the muzzle end of a barrel of a firearm and having an outer surface.
- the body generally will be configured with a bore having a central axis and aligned with the muzzle of the firearm barrel to permit passage of a round of ammunition along the axis.
- a plurality of ports in fluid communication with the bore are formed along the body.
- the plurality of ports are arranged in pairs around a circumference of the body with one port of each pair positioned opposing the other port of the pair to cause intermixing of exiting compressed gas from the paired ports thereby providing at least one of: a reduction in muzzle movement, reduction in sound and reduction in recoil effect.
- the muzzle brake assembly for a firearm includes a body having a bore and a plurality of adjacent ports arranged in annular rings or recesses around the circumference of the body and each extending through the bore into fluid communication with the bore.
- Each of the ports further will include an inlet and an outlet for venting or exhausting pressurized gases generated from firing a round of ammunition from the firearm.
- the outlets . of at least a subset of the adjacent ports are arranged in an opposing relationship and are oriented at angles with respect to a control axis of the bore of the body to direct intermixing of compressed gases from the bore, and/or to direct at least a portion of the gases away from the outer surface of the body.
- the body further can be formed with the barrel of the firearm or can include an attaching mechanism for detachably coupling the muzzle brake assembly to the barrel.
- a method for forming a muzzle brake assembly for a firearm including the steps of forming a body having a bore along an axis, the body further having an outer surface, and forming a plurality of adjacent ports arranged around a circumference of the body and in fluid communication with the bore for venting or exhausting portions of the pressurized gases from firing of a round of ammunition from the bore.
- At least a subset of the adjacent ports can be oriented to cause intermixing of compressed or pressurized gases exhausted from the bore at a location between the at least a subset of adjacent ports at the outer surface, thus providing at least one of: a reduction in muzzle movement, reduction in sound and reduction in recoil effect, when a fired round traverses along the axis.
- FIG. 1 is a perspective view of a muzzle brake assembly, according to one embodiment of the present invention.
- FIG. 2 is a side elevational view, of a muzzle assembly, according to one embodiment of the present invention.
- FIG. 3 is a perspective view of the muzzle brake assembly of Figs. 2-3;
- Fig. 4 is a cross-sectional view of the muzzle brake assembly of Fig. 2;
- FIG. 5 is a side view of an additional enhancement of a muzzle brake assembly according to principles of the present invention.
- Fig. 6 is a cross-sectional view of the muzzle brake assembly of Fig. 5.
- FIGs. 7A-7C are photographs illustrating a pressure/shock wave created by a conventional muzzle brake assembly upon firing.
- Fig. 7D is a photograph illustrating a pressure/shock wave created by a muzzle brake assembly according to the principles of the present invention upon firing.
- Fig. 8 is a graph illustrating the generated recoil Force vs. Time for the firing of a firearm using various conventional muzzle brakes or no muzzle brake versus a muzzle brake assembly according to the principles of the present invention. DETAILED DESCRIPTION OF THE PRESENT DISCLOSURE
- round and round of ammunition include a rimfire round, a centerfire round, shotgun shells including shot, slugs and other payloads, as well as other types of ammunition.
- the present disclosure describes a muzzle brake assembly, for mounting on (or locating at) the muzzle of a firearm F, such as a centerfire or a rimfire firearm, for example, and is configured to reduce the felt recoil and reduce muzzle jump upon discharge.
- the firearm F can comprise a rifle, such as a bolt action rifle, semi-automatic or automatic rifle, such as an AR-15, M-4, ACR or other gas operated rifle, shotguns, and various other types of long guns and handguns. As shown in Fig.
- the firearm F further can include a stock 10, fire control 1 1 with a trigger 12, and a barrel 13 having a first end 14 defining a chamber 15 in which a round of ammunition A is received, and a second or muzzle end 16 through which the round is discharged upon firing.
- the muzzle brake assembly according to the principles of the present invention may also produce an acoustic signature that is substantially equivalent to a firearm that does not contain a muzzle brake assembly. The resulting reduction in sound levels produced by the use of the muzzle brake assembly disclosed herein thus provides a significant improvement over currently available muzzle brakes, which tend to produce a loud sound signature, i.e., increased resulting sound and pressure levels experienced by shooters and others nearby upon firing.
- the muzzle brake assembly configured according to the principles described by the present disclosure may provide at least the following benefits:
- a muzzle brake assembly configured according to principles of the disclosure, generally denoted by reference numeral 100, is illustrated in Fig. 1 as being received and/or releasably connected to the muzzle end 16 of the barrel 13 of the firearm.
- Figs. 2-4 illustrate the muzzle brake assembly 100 in further detail.
- the muzzle brake assembly generally includes a tubular body 101 , typically formed from a high strength material such as a metal or composite material, and will have open first and second or upstream and downstream ends 102a/102b.
- the general shape of the body of the muzzle brake assembly 100 may be configured to be predominantly cylindrical, but other shapes may be employed, and the body should not be and is not limited to this cylindrical shape.
- the body of the muzzle brake assembly also includes an outer wall 103 and an inner wall 104 defining a longitudinally extending bore 135 (Fig. 4).
- the muzzle brake bore 135 defined by the inner wall or surface 104 may be substantially concentric with the bore 145 of the barrel 13 of a firearm, along a generally centrally aligned axis 130.
- the muzzle brake bore 135 accordingly is configured along the axis 130 to permit passage of a round of ammunition from the firearm barrel bore 145 along the axis 130 and out of the second end 102b of the body.
- the muzzle brake assembly 100 is illustratively shown in Figs. 1 and 4 as located or attached to the muzzle end 16 of a firearm barrel 13 by attaching mechanism 136.
- the attaching mechanism may include a threaded arrangement 137 as shown in Fig. 4.
- the muzzle brake assembly 100 may be detachably connectable to the end of the firearm barrel by other releasable locking or coupling connections as will be understood in the art.
- the muzzle brake assembly may be configured as a pemianent or integrally formed part of a firearm barrel; typically located proximate the muzzle end of the barrel.
- the muzzle brake bore 135 may be sized to substantially match a particular caliber of a firearm (i.e., diameters are substantially concentric) so that a round of ammunition of a particular caliber will pass through the bore 145 of the firearm barrel 140 and the muzzle brake bore 135. Therefore, the diameter of the muzzle brake bore 135 defined by an inner surface of the bore of a firearm barrel 13 may be configured according to the caliber of the intended firearm with which it may be used.
- the shape of the body 101 of the muzzle brake assembly 100 is generally symmetric with respect to the muzzle brake bore 135. Additional possible profile shapes of the muzzle brake bore also can be used and can include circular, triangular, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon, dodecagon, and the like.
- the muzzle brake assembly 100 may also be configured with optional auxiliary features such as a wire cutter 120, coupling mechanisms for connection to further accessories, or a standard muzzle crown geometry.
- the muzzle brake assembly 100 will be configured with a plurality of gas exhaust ports 105 arranged about the circumference of the body 101 of the muzzle brake assembly 100 and communicating with the muzzle brake bore.
- the ports 105 can be arranged in first and/or second, or upstream and downstream sets or groups of ports, and may be configured as extended cylindrical passages 106a, 106b, or of a different slotted shape, each including an inlet 107 opening into the muzzle brake bore 135, and an outlet 108 opening along the outer wall/surface 103 of the body.
- the ports 105 function as gas exhaust or venting passages projecting from and in communication with the inner volume defined by the muzzle brake bore 135 to permit an escape of gases caused by discharge of a round of ammunition from the firearm traversing through the muzzle brake bore 135.
- the escaping gas is illustratively shown by arrows 125a-125d in Fig. 4.
- the number of ports 105 relative to the muzzle brake bore 135 may be varied as needed and can be used in determining the profile shapes of the muzzle brake bore.
- the orientation of the ports 105 relative to the central axis 130 of the muzzle brake bore 135 generally may range from about 30° to about 150°, although other orientations also can be provided as needed. An about 45° to about 90° orientation may be preferred from a manufacturing perspective. However, other orientations also may be used to provide desired operational advantages, as described below.
- annular or circumferential rings or recesses 1 12 can be formed in the outer wall/surface of the body at spaced locations there along.
- these annular rings 1 12 can be formed as generally concave grooves 1 15a, 1 15b with a plurality of facets 1 10a, 1 10b being formed along adjacent upstream and downstream surfaces 1 16a/ 1 16b of the grooves 1 15a, 1 15b.
- the facets 1 10a, 1 10b may be arranged in a plurality of pairs around the circumference of the outer surface of the muzzle brake assembly 100. For example, as shown in Figs.
- facets 1 10a, 1 10b can comprise first and second facets, with the adjacent facets of each pair of facets can be formed at least partially opposing one another as shown in Figs. 2-3.
- Other sets of paired facets are shown in the figures, but for explanation simplicity only reference to paired facets 1 10a and 1 10b is described; although the principles are generally the same for the other facets and associated ports and passageways.
- the facets 1 10a, 1 10b may be formed at an angle in relation to the central axis
- the ports 105 will be formed within the facets 110a, 1 10b, with the passageways 106a-106d of the ports extending at a desired angle (i.e., in a range of from about 30° to less than 90° in relation to the axis 130) from their outlets 108 defined within the facets, to their inlet openings 107 communicating with the inner volume of the muzzle brake assembly 100 defined at least in part by the inner surface of the muzzle brake bore 135. As indicated in Figs.
- the ports generally will be positioned or oriented substantially perpendicular to the outward facing surfaces 1 13a/l 13b of their associated facets 1 lOa/l 10b.
- the orientation/angles of the facets further can assist in formation of the bores at desired angles with respect to the axis 130 of the muzzle brake, as well as in controlling spacing between the outlets of the ports as needed to achieve a desired intermixing of the gases exiting therefrom.
- the angle of the surfaces 1 13a/l 13b (Fig. 3) of the facets 1 10a, 1 10b may be substantially perpendicular to the axial axis 1 14a/l 14b of each passageway 106a, 106b for directing pressurized gas flows at substantially crossing directions as represented by arrows 125a-125d.
- the angle "y" formed between the two axial axis' 1 14a, 1 14b (and similarly between 1 14c and 1 14d) is illustrated as being about 90° in the embodiment of Fig. 3. However, this formed angle "y" may be at a non-90° angle that is more or less than 90° depending on the chosen angle of the passageways 106a, 106d in relation to the axis 130.
- Each passageway e.g., passageway 106a or 106c, may be oriented at angle to an adjacent or opposing passageway, e.g., passageway 106b or 106d (and other paired passageways) so that the outlet openings 108 of each port formed along the outer surface of the body of the muzzle brake assembly 100 for each passageway (in this example, the surface being associated with a respective facet 1 10a, 1 10b) is at least partially facing and opposing an outlet opening of the adjacent passageway of a corresponding port (e.g., at the other port of each pair of ports).
- Pressurized or compressed gases generated by firing a round of ammunition are vented or escape, at least in part, from the muzzle brake assembly 100 via the various paired sets of ports 105, such as the ports 105 configured in adjacent facets 1 10a, 1 10b.
- the mutually opposing ports 105 permit and foster an intermixing of the exiting compressed/pressurized gas flows (e.g., as represented by arrows 125a-125d) and tend to direct the gases away from the shooter from the paired ports 105, thereby providing at least any one or more of: a reduction in muzzle movement, reduction in sound and reduction in recoil effect.
- the spacing and orientation of the adjacent facets l l Oa/l l Ob along which the opposed pairs of ports 105 are located enables the facets 1 10a/ 1 10b opposite each port 105 to act as redirecting surfaces to help foster turbulence and create an eddying effect to the gases exiting the ports to further help direct the resultant pressure wave for such gases forwardly and away from the shooter as indicated in Fig. 7D.
- Figs. 7D As indicated in Figs.
- one of the passageways in this example, the downstream passageways 106b and 106d can be configured with a diameter that is the same or greater than its respective paired passageway 106a and 106c. That is, due to gas dynamics, the ports 105 having their inlets 107 (Fig.
- each paired set of ports is configured with a diameter that is greater than or equal to the diameter of the its corresponding/associated paired port nearer the proximal end 102a of the brake body (the end where a round enters the muzzle brake assembly 100 thus the gas flow pressures are at their highest in operation).
- This diameter difference relationship of paired ports and is illustrated in Figs. 2-3; and the diameter difference relationship of the corresponding paired passageways (e.g., 106a/106b and 106c/106d) generally is illustrated in Fig. 4.
- the diameter difference relationship of paired ports/passageways may compensate variances in flow rates for the escaping pressurized gases to provide for a substantially equivalent gas mass for each of the opposing flows because of the direction of flow of the compressed gases along the bore 135 of the muzzle brake assembly 100, with the gases exiting the upstream ports/passageways potentially being of a higher pressure.
- the resultant direction and shape of the pressure wave of the gases exiting the ports generally is changed such that the gas flow and the corresponding sound signature or wave is in a direction away from the shooter as shown in Fig. 7D, rather than being directed rearwardly as can occur with conventional muzzle brakes, such as shown in Figs. 7A-7C.
- the ratio of diameters of paired ports/passageways can be from about 3-4: 1 , within the distal port (the downstream port of each pair of ports which is further away from the shooter) upstream or paired having a longer diameter or size versus its proximal port/passageway, or greater to about 1:1 (distal port to paired proximal port/passageway), and with about 2: 1 (distal port to paired proximal port/passageway) being a preferred ratio.
- the "brake" effect accomplished by the muzzle brake assembly according to the present invention generally is created by the redirecting of the propellant gases in directions that generally are not generally parallel to the axis 130 of the barrel and muzzle brake bore 135.
- the force vectoring produced by the propellant gases is angled away from the bore of the firearm barrel and muzzle brake assembly axis 130 as indicated in Fig. 4, i.e., as noted, the direction and shape of the resultant pressure wave can change, from being generally concave and expanding toward the shooter as shown in Figs. 7A-7C, to a generally convex, forwardly moving shape wave as shown in Fig. 7D.
- This redirection of the propellant gases changes the force response of the gases as related by Newton's third law.
- the kinetic energy associated with the escaping gases is directed radially away from the barrel and muzzle brake centerline axis along substantially equally spaced radial paths so as to resist muzzle lift or jumping or other movement of the muzzle end of the barrel upon firing of the round of ammunition. Therefore, the energy available for transmission to the shooter via recoil also can be reduced.
- the acoustic signature may be reduced, or maintained to a substantially lower acoustic level (such as substantially the same decibel level, or less) as if no brake was being used or as compared to a standard brake design, by redirecting the propellant gases into opposing or nearly opposing or nearly opposing directions from different longitudinal locations along the length of the muzzle brake assembly 100. Still further, by redirecting the radial gases from different longitudinal locations, the spherical pressure waves generally produced from the various locations are destructively additive or mutually cancelling, thereby lessening the net effective pressure wave. Therefore, the acoustic signature as experienced by the shooter and those in proximity may be reduced or approaching a level as if no muzzle brake assembly was being used, depending on the geometry of the longitudinal and radial gas exits.
- a substantially lower acoustic level such as substantially the same decibel level, or less
- a resulting reduction in sound may be achieved by an effective cancelation (at least in part) of the sound waves exiting or caused by the escaping compressed/pressurized gases being directed at or crossing with the gas flows exiting from the opposed ports 105 of adjacent facets 1 10a, 1 10b (and similarly all the other paired mutually opposing ports) of the muzzle brake assembly 100, creating the intermixing of the gases such as shown in Fig. 7D.
- FIG. 7C further shows the rapidly expanded, enlarged pressure wave having a generally concave shape and moving rearwardly along the barrel of the firearm, i.e., toward the shooter.
- the pressure wave exiting the muzzle brake according to the present invention shown in Fig. 7D exhibits an opposite or forward expansion and movement of gases, expanding away from the shooter, in a generally convex configuration or pattern with respect to the shooter and potentially having a more limited expansion of the pressure wave shape or pattern. This provides a reduction in the sound signature associated with such a pressure wave.
- the following table discusses the differences in measured sound levels (by decibel) of a conventional AR15 style rifle (DPMS A2) fired (both with and without a flash hider) without a muzzle brake, fired with a .308 Miculek muzzle brake, an AAC Blackout muzzle brake, and a muzzle brake formed in accordance with the principles of the present invention (labeled "Cancelation Brake” in the table below.
- DPMS A2 conventional AR15 style rifle
- AAC Blackout muzzle brake a muzzle brake formed in accordance with the principles of the present invention
- the exiting of the compressed gases at an angle not perpendicular to the axis 130 also substantially reduces muzzle movement (i.e., muzzle jump). Reduction of muzzle movement often may be important to a shooter in a critical situation, such as to reacquire a target quickly, for example. Flash hiders such as referenced in the table above, while providing reduction of a visible flash of burning gases exiting the barrel (and possibly some minor sound reduction) generally are not designed to address the reduction of recoil and/or muzzle jump/movement as are muzzle brakes.
- the mutually opposing configuration of ports 105 accordingly further substantially reduces both muzzle jump/movement, as well as the peak recoil as felt by a shooter.
- this peak recoil reduction may be as much as about 25%, as compared with using no muzzle brake assembly.
- a graphical representation of the results of such peak recoil reduction tests is shown in Fig. 8. As the graph of Fig. 8 indicates, a range of peak recoil force reduction may be reduced by about 5% to about 40%, with typical achievable range of about 20% to about 25% reduction, compared with using no muzzle brake assembly or with the use of a flash hider only.
- the ports 105 of each pair of ports may be circumferentially offset from one another so that they are not directly opposing one another, rather by offsetting the ports 105 circumferentially somewhat by a predetermined distance (such as circumferentially offsetting/rotating facet 1 10a in relation to facet 1 10b, and similarly, the other facets around the grooves 1 15a, 1 15b), and/or varying the sizes of and/or gas volumes permitted through each of the ports to provide the desired recoil reduction and reduction of sound volume and/or frequencies (lower or higher).
- a predetermined distance such as circumferentially offsetting/rotating facet 1 10a in relation to facet 1 10b, and similarly, the other facets around the grooves 1 15a, 1 15b
- each pair of ports may be formed in an opposing relationship, but the pairs of ports of the upstream set or group of ports formed along the first or upstream annual ring 1 15a may be offset from the pairs of ports of the downstream set(s) or groups of ports formed along the second or downstream annular ring 1 15b, and/or a third annular ring 1 15c shown in Figs. 5-6.
- the principles herein may be achieved without the use of facets.
- the relative configuration of mutually opposing ports 105 may be achievable without use of facets and/or the annular rings or circumferential grooves 1 15a, 1 15b.
- the diameter of the ports 105 and associated passageways may be sized in accordance with or based on the amount of expected gasses that may be produced by a particular firearm and associated ammunition, so that venting rate of the gasses is appropriate for the intended ammunition and firearm.
- the number of opposing paired ports 105 may be decreased or increased based on caliber size and/or type of ammunition expected, while maintaining effective recoil reduction, sound reduction, and/or acceptable reduction in muzzle movement. This may be accomplished by changing the number of ports or increasing/decreasing the number of concentric ringed sets or circumferential grooves.
- FIG. 6 is a cross-sectional view of an additional embodiment exemplary muzzle brake assembly, configured according to principles of the disclosure, generally denoted by reference numeral 200.
- the muzzle brake assembly 200 is shown configured with three concentric rings or grooves 1 15a, 1 15b, 1 15c.
- the ports 105 of groove 1 15c and its associated facets 1 10a, 1 10b are shown as being offset circumferentially as compared with the ports 105 and its respective facets 1 10a, 1 10b of grooves 1 15a and 1 15b.
- This configuration may provide for ease of manufacturing of the associated passageways that extend from an outer surface, such as the respective associated facets of the muzzle brake assembly 200, to the muzzle brake bore 135, and this configuration may also provide for suitable orientations of the passageways so that they do not interfere with one another in the interior portions of the body of the muzzle brake assembly 200, for example.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2013240588A AU2013240588A1 (en) | 2012-01-06 | 2013-01-02 | Cancellation muzzle brake assembly |
EP13739299.9A EP2800941A2 (en) | 2012-01-06 | 2013-01-02 | Cancellation muzzle brake assembly |
CA2860764A CA2860764A1 (en) | 2012-01-06 | 2013-01-02 | Cancellation muzzle brake assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261583942P | 2012-01-06 | 2012-01-06 | |
US61/583,942 | 2012-01-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2013147959A2 true WO2013147959A2 (en) | 2013-10-03 |
WO2013147959A3 WO2013147959A3 (en) | 2013-11-28 |
Family
ID=48803590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2013/000008 WO2013147959A2 (en) | 2012-01-06 | 2013-01-02 | Cancellation muzzle brake assembly |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130227871A1 (en) |
EP (1) | EP2800941A2 (en) |
AU (1) | AU2013240588A1 (en) |
CA (1) | CA2860764A1 (en) |
WO (1) | WO2013147959A2 (en) |
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US9593900B2 (en) * | 2013-11-19 | 2017-03-14 | Stephen Paul Vossler | Muzzle brake |
US9377263B1 (en) * | 2014-02-24 | 2016-06-28 | Ferfrans Inc. | Muzzle brake concussion reducing device for firearms and associated muzzle brakes and compensators |
US10466004B2 (en) * | 2015-08-11 | 2019-11-05 | Drew Nolle Walker | Optimized flow compensator |
JP2019502892A (en) * | 2016-01-20 | 2019-01-31 | エヌジーツー ディフェンス、エルエルシー | Firearm suppressor |
US10816300B2 (en) * | 2016-03-10 | 2020-10-27 | James Norman Griffitts | Barrel stabilizing and recoil reducing muzzle brake |
US9885533B2 (en) * | 2016-03-10 | 2018-02-06 | James Norman Griffitts | Barrel stabalizing and recoil reducing muzzle brake |
US11280572B2 (en) | 2016-03-10 | 2022-03-22 | James Norman Griffitts | Barrel stabilizing and recoil reducing muzzle brake with guiding ribs |
US10422603B2 (en) | 2016-03-10 | 2019-09-24 | James Norman Griffitts | Barrel stabilizing and recoil reducing muzzle brake |
WO2018005853A1 (en) * | 2016-06-29 | 2018-01-04 | S.W.O.R.D. Manufacturing Inc. | Muzzle brakes including unvented portions and related firearms and methods |
USD827760S1 (en) | 2017-06-16 | 2018-09-04 | Spec Arms LLC | Firearm upper |
USD820937S1 (en) | 2017-06-16 | 2018-06-19 | Spec Arms LLC | Firearm lower |
USD828480S1 (en) * | 2017-06-16 | 2018-09-11 | Spec Arms LLC | Firearm handguard |
USD851201S1 (en) | 2017-12-01 | 2019-06-11 | Spec Arms LLC | Firearm handguard |
US10520272B1 (en) * | 2018-03-23 | 2019-12-31 | The United States Of America As Represented By The Secretary Of The Army | Cannon recoil inhibitor and impulse noise attenuator |
WO2019195649A1 (en) * | 2018-04-06 | 2019-10-10 | Baxter Cameron M | Sound suppressor |
US11085725B2 (en) * | 2019-01-29 | 2021-08-10 | Joshua Peter Moore | Firearm suppressor |
WO2021021900A1 (en) | 2019-07-29 | 2021-02-04 | Sturm, Ruger & Company, Inc. | Ported barrel system for firearms |
WO2021092663A1 (en) * | 2019-11-11 | 2021-05-20 | Bameks - 98 Ad | Suppressor |
US11614298B2 (en) | 2020-01-21 | 2023-03-28 | Polaris Capital Corporation | Firearm suppressor |
US11774206B2 (en) * | 2021-08-02 | 2023-10-03 | WHG Properties, LLC | Firearm muzzle brake |
US20230168058A1 (en) * | 2021-09-01 | 2023-06-01 | In Ovation Llc | Firearm Compensator |
USD1031902S1 (en) * | 2022-10-25 | 2024-06-18 | Palmetto State Armory | Muzzle brake with muzzle brake core |
US11703303B1 (en) * | 2023-03-10 | 2023-07-18 | Polaris Capital Corporation | Air gun moderator and multi-layer moderator core |
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US2212684A (en) * | 1937-03-06 | 1940-08-27 | Milton Roberts | Recoil controlling device |
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2013
- 2013-01-02 AU AU2013240588A patent/AU2013240588A1/en not_active Abandoned
- 2013-01-02 US US13/694,775 patent/US20130227871A1/en not_active Abandoned
- 2013-01-02 CA CA2860764A patent/CA2860764A1/en not_active Abandoned
- 2013-01-02 WO PCT/US2013/000008 patent/WO2013147959A2/en active Application Filing
- 2013-01-02 EP EP13739299.9A patent/EP2800941A2/en not_active Withdrawn
Non-Patent Citations (1)
Title |
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Also Published As
Publication number | Publication date |
---|---|
CA2860764A1 (en) | 2013-10-03 |
WO2013147959A3 (en) | 2013-11-28 |
AU2013240588A1 (en) | 2014-08-21 |
EP2800941A2 (en) | 2014-11-12 |
US20130227871A1 (en) | 2013-09-05 |
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