WO2017171980A2 - Frein de bouche pour arme à feu - Google Patents

Frein de bouche pour arme à feu Download PDF

Info

Publication number
WO2017171980A2
WO2017171980A2 PCT/US2017/013887 US2017013887W WO2017171980A2 WO 2017171980 A2 WO2017171980 A2 WO 2017171980A2 US 2017013887 W US2017013887 W US 2017013887W WO 2017171980 A2 WO2017171980 A2 WO 2017171980A2
Authority
WO
WIPO (PCT)
Prior art keywords
port
muzzle brake
bore
ports
diameter
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.)
Ceased
Application number
PCT/US2017/013887
Other languages
English (en)
Other versions
WO2017171980A3 (fr
Inventor
David A.T. LAKE
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.)
Wiph LLC
Original Assignee
Wiph LLC
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 Wiph LLC filed Critical Wiph LLC
Publication of WO2017171980A2 publication Critical patent/WO2017171980A2/fr
Publication of WO2017171980A3 publication Critical patent/WO2017171980A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F41A21/32—Muzzle attachments or glands
    • F41A21/36—Muzzle attachments or glands for recoil reduction ; Stabilisators; Compensators, e.g. for muzzle climb prevention
    • 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
    • F41A21/28—Gas-expansion chambers; Barrels provided with gas-relieving ports
    • 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

  • the present invention relates to a muzzle brake for a firearm.
  • a jet of gas escapes from a firearm's muzzle after the bullet's "uncorking" event.
  • This jet of gas is responsible for the large majority of the firearm's recoil force.
  • the gas jet can amount to >90% of the recoil force born by the shooter.
  • Other factors that contribute to or otherwise affect recoil force include: firearm mass, bullet mass and velocity (energy), barrel length (time under pressure), and cartridge chambering (gun powder volume).
  • a firearm such as an AR-15 rifle chambered for 5.56 NATO or .223 Remington cartridges (or similar), can benefit greatly from a properly designed muzzle device that acts to attenuate the recoil force caused by the gas jet.
  • Prior muzzle brakes have recognized that such brakes may perform one of three functions performed by a brake.
  • the first is flow.
  • the brake can direct propellant gas to escape along a prescribed path.
  • the second is foul.
  • the device can simply catch or retard propellant gas or can serve to make the gas's escape or direction more inefficient.
  • Third is scavenging.
  • the brake serves to divert gas in any direction other than the bullet's direct linear path.
  • Such brakes scavenging brakes use the bullet itself as an obstruction at each of a number of baffles formed in the brake.
  • Prior brakes may perform only one of these functions or may not effectively perform any of the functions. Accordingly, there is a need for a muzzle brake that effectively exploits all three functions of a muzzle brake.
  • FIG. 1 is a perspective view of a muzzle brake in accordance with the
  • embodiments of present invention showing the rear, top and right sides of the muzzle brake.
  • FIG. 2 is a perspective view of a muzzle brake in accordance with FIG. 1 showing the front, top and right sides of the muzzle brake.
  • FIG. 3 is a view the top of a muzzle brake in accordance with FIG. 1.
  • FIG. 4 is a view the rear of a muzzle brake in accordance with FIG. 1.
  • FIG. 5 is a view the side of a muzzle brake in accordance with FIG. 1.
  • FIG. 6 is a view the front of a muzzle brake in accordance with FIG. 1.
  • FIG. 7 is a view the side of a muzzle brake in accordance with embodiments of the invention.
  • FIG. 8 is a cross-sectional view along the line A-A as shown in FIG. 7.
  • FIG. 9 is a cross-sectional view along the line B-B as shown in FIG. 7.
  • FIG. 10 is a view the side of a muzzle brake in accordance with embodiments of the invention.
  • FIG. 11 is a cross-sectional view along the line C-C as shown in FIG. 10.
  • FIG. 12 is a cross-sectional view of the detail D as shown in FIG. 11.
  • FIG. 13 is a view the top of a muzzle brake in accordance with embodiments of the invention.
  • FIG. 14 is a perspective view as seen from the perspective line F-F as shown in
  • FIG. 15 is a perspective view of the detail G as shown in FIG. 14.
  • FIG. 16 is a view the side of a muzzle brake in accordance with embodiments of the invention.
  • FIG. 17 is a cross-sectional view along the line H-H as shown in FIG. 16.
  • FIG. 18 is a perspective view of a muzzle brake in accordance with FIG. 16 showing the front, top and right sides of the muzzle brake.
  • bore refers to holes, chambers, cavities or the like formed in a solid body.
  • Such bores may be formed by a boring action, such as drilling, but they are not limited to being formed in any specific manner and may be formed by any other appropriate process as would be understood by one of ordinary skill in the art.
  • Embodiments of the present invention allow the propellant gasses to expand within an interior volume of the muzzle brake before escaping and being harnessed and directed to act on the surrounding atmosphere.
  • Embodiments of the present invention may be designed to exploit all three functions of a muzzle brake.
  • the port and chamber geometry may allow for efficient flow of escaping gas, and present sufficient surface area as a blast baffle at each chamber to fowl escaping high-pressure gasses.
  • the bullet may spend sufficient time within the brake structure for the brake to effectively scavenge residual energy from acting directly against the bullet.
  • embodiments of the present invention may include geometry that is keyed to and unique to each caliber of ammunition.
  • embodiments of the present invention include a muzzle brake 100.
  • the muzzle brake comprises a forward end 102 and a rearward end 104.
  • the muzzle brake has a generally cylindrical surface extending along a central axis parallel and coaxially with a central axis of the barrel bore of the firearm with which the muzzle brake is used.
  • the muzzle brake 100 outer surface 105 may include flattened upper 106 and lower 108 surfaces that separate curved side surfaces 105.
  • a central through bore 110 extends through the muzzle brake 100 along the central axis of the brake.
  • the inside diameter of the through bore 110 may be from 0.030 to 0.060 inches larger than the outside diameter of the bullet being used by the firearm. More preferably, the inside diameter of the through bore 110 is from 0.015 to 0.030 inches larger than the outside diameter of the bullet being used by the firearm.
  • the diameter of the through bore is separated from an outside surface 105 of the muzzle brake by a sidewall 126.
  • the rearward end of the muzzle brake may comprise a mounting bore 112 extending into the body of the brake that is aligned with but larger than the through bore 110.
  • the inside diameter of the mounding bore 112 may include threads 114 for engaging with threads formed on an outside diameter of a firearm barrel or muzzle to securely attach the muzzle brake to the firearm.
  • the rearward end 104 of the muzzle brake may also include a rear section 116 with an outer surface having a smaller diameter than the cylindrical outer side surfaces 105 of the remainder of the brake.
  • a chamfered section 118 may transition between the rear section 116 and the remainder of the brake outer side surfaces 105.
  • the diameter of the rear section 116 may be tangent with the upper 106 and lower 108 flattened surfaces so that when viewed from the side, the muzzle brake has continuous upper and lower profiles, as shown, for example, in FIG. 5.
  • ports 120 may be bored or otherwise formed into side surfaces 105 of the muzzle brake 100.
  • the ports may be formed such that a central axis of each port may be present at an angle that is rearward of perpendicular to the through bore 110.
  • the exhaust opening 122 of each port at the muzzle brake side surface 105 is rearward of the intake opening 124 that connects with the through bore 110.
  • the angle is between 10 and 25 degrees rearward of perpendicular relative to the through bore.
  • the ports 120 are located in horizontally and symmetrically opposed pairs, one port in each pair extending through a sidewall (126) on opposite sides of a vertical central plane 128 of the muzzle brake.
  • Each port may comprise two parallel bores 130a, 130b.
  • the parallel port bores 130a, 130b are formed symmetrically on opposite sides of a horizontal central plane 129 of the muzzle brake.
  • a centerline 132a, 132b of each boar is tangent to the diameter 1 1 1 of the through bore 1 10.
  • the resultant 4-bore pattern may be repeated multiple times along the length of the brake body. In preferred embodiments, the 4-bore pattern is repeated between three and six times. FIGS. 7-8, for example, show the 4-bore pattern repeated six times.
  • the ports 120 are formed such that their termination extends beyond the central plane 128 so that the bottom or terminal surfaces 134 of the ports will intersect.
  • the ports 120 extend between 0.000 inches and 0.020 inches past the central plane 128.
  • the diameter of bores 130a, 130b of the ports 120 may be greater than the diameter of the through bore 1 10.
  • the diameter of the port bores is between 0.040 and 0.100 inches larger than the diameter of the through bore 1 10.
  • .204-.260 caliber ammunition may use a bore diameter of 5/ ⁇ 6 th of an inch
  • .270-.338 caliber ammunition may use a bore diameter use a 3/8* of an inch.
  • the bottom of each port bore has a spherical surface 140.
  • This spheroid termination 140 into the through bore 110 and incidental intersection with adjacent ports results in a chamber that allows for a 360 degree (radially symmetrical) "blow” of propellant gas. As this gas escapes, it encounters a positive "knife edge” or acute angles leading away in all directions from the through bore and into the ports 120. Such edges or acute angles are formed, for example, at the intersection 142 of port pairs formed on opposite sides of the muzzle brake (FIG. 11), at the intersection 144 between adjacent bores 130a, 130b in the same port (FIG. 15), at the intersection 146 between a port 120 and the through bore 110 (FIG. 8) and at the intersection 148 between the surface of the through bore 110 and the spherical ends 140 of two opposing ports 120 (FIG. 8).
  • the contour of the chambers formed by ports 120 is such that the escaping gas will flow away from the through bore 110 readily and efficiently. Also, the contour allows the escaping gas to accelerate before it escapes from the interior of the muzzle brake through the ports. The accelerated gas may act on the surrounding atmosphere and create rearward thrust that tends to propel the firearm forward in opposition to and thereby mitigating recoil forces.
  • FIGS. 7-15 are intended to show the geometry of embodiments of the present invention that is created by the intersection of ports 120 with through bore 110.
  • FIG. 8 shows a cross-sectional view along the vertical central plane (128) of the muzzle brake 100.
  • FIGS. 11 and 12 show a cross-sectional view along a vertical plain (illustrated by line C-C in FIG. 10) that is parallel to, but offset from, the vertical central plane (128).
  • the plane of the cross-sectional view shown in FIGS. 11 and 12 extends parallel to the intersection between ports 120 and a surface of the through bore 110.
  • FIGS. 14 and 15 show a perspective view parallel to the centerline (132a, 132b) of the bores 130a, 130b that form ports 120.
  • FIGS. 14- 15 present a view directly into ports 120 but at an angle that is rearward of perpendicular to the through bore 1 10 as described above.
  • embodiments of the present invention may comprise a scavenging tube 150.
  • the scavenging tube comprises an extension of the through bore 110 beyond a forward end of the ports 120.
  • the scavenging tube 150 may serve to increase the effectiveness of an array of ports 120 positioned nearer to or adjacent the muzzle of the firearm. The operational pressure and thus resultant effect of the nearer ports is highest.
  • the extended tube of the scavenging tube serves to maintain positive pressure behind the bullet, and maintain a dwell time under pressure at the ports. This structure and its effect have been observed to enhance the brake's function.
  • the scavenging tube may also reduce the amount of energy that is allowed to follow the bullet on it path of travel. Such energy retained behind the bullet, and in the same direction, would contribute to the recoil impulse of the rifle.
  • ports 120 comprise two overlapping cylindrical bores 130a, 130b as described above.
  • ports 120 may be used and that more or fewer bores may be used within each port. It should also be recognized that other bore shapes may be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Braking Arrangements (AREA)
  • Retarders (AREA)

Abstract

Frein de bouche pour arme à feu comprenant des orifices percés ou autrement formés dans des surfaces latérales du frein de bouche. Les orifices peuvent être formés de telle sorte qu'un axe central de chaque orifice peut être présent selon un angle qui est situé à l'arrière de la perpendiculaire au trou traversant. De cette manière, l'ouverture d'échappement de chaque orifice au niveau de la surface latérale de frein de bouche se trouve à l'arrière de l'ouverture d'admission qui est reliée au trou traversant. Les orifices sont situés dans des paires opposées horizontalement et symétriquement, un premier orifice de chaque paire s'étendant dans une paroi latérale sur des côtés opposés d'un plan central vertical du frein de bouche. Chaque orifice peut comprendre deux trous parallèles. Une ligne centrale de chaque trou est tangente au diamètre du trou traversant. Le fond de chaque trou d'orifice présente une surface sphérique 140. Cette fin sphéroïde dans le trou traversant et l'intersection consécutive avec des orifices adjacents entraîne des angles aigus au niveau de chaque bord qui s'éloigne du trou traversant et dans les orifices.
PCT/US2017/013887 2016-01-19 2017-01-18 Frein de bouche pour arme à feu Ceased WO2017171980A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662280471P 2016-01-19 2016-01-19
US62/280,471 2016-01-19

Publications (2)

Publication Number Publication Date
WO2017171980A2 true WO2017171980A2 (fr) 2017-10-05
WO2017171980A3 WO2017171980A3 (fr) 2017-11-09

Family

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Family Applications (1)

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PCT/US2017/013887 Ceased WO2017171980A2 (fr) 2016-01-19 2017-01-18 Frein de bouche pour arme à feu

Country Status (2)

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US (1) US20190017770A1 (fr)
WO (1) WO2017171980A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2695972C1 (ru) * 2018-12-10 2019-07-29 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Дульный тормоз
US11112201B2 (en) 2019-07-29 2021-09-07 Sturm, Ruger & Company, Inc. Ported barrel system for firearms
US20220099402A1 (en) * 2020-07-28 2022-03-31 Denis Emestovich Lvov Muzzle brake-compensator (dtc) with a system for interrupting the supersonic gas fl
US11543205B2 (en) * 2020-08-07 2023-01-03 Blackpowder Products, Inc. Muzzle brake for muzzle-loading firearm
US20230032661A1 (en) * 2021-08-02 2023-02-02 WHG Properties, LLC Firearm muzzle brake
USD1084197S1 (en) 2021-08-02 2025-07-15 WHG Properties, LLC Muzzle brake

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH711541A2 (en) * 2015-07-09 2017-03-31 Schärer Christian Mouthpiece for a projectile firing device.
US11280572B2 (en) * 2016-03-10 2022-03-22 James Norman Griffitts Barrel stabilizing and recoil reducing muzzle brake with guiding ribs
US10126085B2 (en) * 2016-05-27 2018-11-13 Mark A. Deros Muzzle device
CN110081771B (zh) * 2019-06-19 2024-08-06 李笑 一种带有拨片的膛口制退器
CN112556492B (zh) * 2020-11-30 2022-03-22 南京理工大学 一种可以改变制退效率的半开腔式制退器
USD1088170S1 (en) * 2023-09-01 2025-08-12 Bear Creek Arsenal, LLC Muzzle break

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545285A (en) * 1982-06-15 1985-10-08 Mclain Clifford E Matched expansion muzzle brake
US5305677A (en) * 1993-04-23 1994-04-26 Kleinguenther Robert A Muzzle brake-bullet stabilizer
US6820530B2 (en) * 2001-12-07 2004-11-23 George M. Vais Extended chamber muzzle brake
US6752062B2 (en) * 2001-12-07 2004-06-22 George M. Vais Muzzle brake
US7143680B2 (en) * 2003-04-08 2006-12-05 Bender Terrence D Recoil and muzzle blast dissipator
US7032339B1 (en) * 2004-09-27 2006-04-25 Roger Bounds Lateral projection muzzle brake
US8087337B1 (en) * 2009-03-03 2012-01-03 Cary William R Recoil compensation and climb arrester
US8166861B2 (en) * 2010-03-18 2012-05-01 Raytheon Company Shock reduction muzzle brake
US20120246987A1 (en) * 2011-04-01 2012-10-04 Anthony Stephen D Recoil, sound and flash suppressor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2695972C1 (ru) * 2018-12-10 2019-07-29 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Дульный тормоз
US11112201B2 (en) 2019-07-29 2021-09-07 Sturm, Ruger & Company, Inc. Ported barrel system for firearms
US20220099402A1 (en) * 2020-07-28 2022-03-31 Denis Emestovich Lvov Muzzle brake-compensator (dtc) with a system for interrupting the supersonic gas fl
US11732990B2 (en) * 2020-07-28 2023-08-22 Denis Emestovich Lvov Compensating muzzle brake (CMB) with supersonic gas stream interruption system
US11543205B2 (en) * 2020-08-07 2023-01-03 Blackpowder Products, Inc. Muzzle brake for muzzle-loading firearm
US20230032661A1 (en) * 2021-08-02 2023-02-02 WHG Properties, LLC Firearm muzzle brake
US11774206B2 (en) * 2021-08-02 2023-10-03 WHG Properties, LLC Firearm muzzle brake
USD1084197S1 (en) 2021-08-02 2025-07-15 WHG Properties, LLC Muzzle brake

Also Published As

Publication number Publication date
US20190017770A1 (en) 2019-01-17
WO2017171980A3 (fr) 2017-11-09

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