WO2018152299A1 - Frein de bouche de canon de réduction de recul et de stabilisation de tube d'arme - Google Patents

Frein de bouche de canon de réduction de recul et de stabilisation de tube d'arme Download PDF

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Publication number
WO2018152299A1
WO2018152299A1 PCT/US2018/018319 US2018018319W WO2018152299A1 WO 2018152299 A1 WO2018152299 A1 WO 2018152299A1 US 2018018319 W US2018018319 W US 2018018319W WO 2018152299 A1 WO2018152299 A1 WO 2018152299A1
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WO
WIPO (PCT)
Prior art keywords
vent
muzzle brake
inner cavity
central axis
bore
Prior art date
Application number
PCT/US2018/018319
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English (en)
Inventor
James Norman Griffitts
Original Assignee
James Norman Griffitts
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 James Norman Griffitts filed Critical James Norman Griffitts
Priority to EP18755078.5A priority Critical patent/EP3583374A4/fr
Publication of WO2018152299A1 publication Critical patent/WO2018152299A1/fr

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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

Definitions

  • the present general inventive concept pertains to firearms, and more particularly, to muzzle brakes of the type designed to control firearm recoil, barrel lift, and lateral deflection of hand guns, high power rifles, mounted guns, and other firearms during and after discharge of a projectile therefrom by capturing high pressure gas generated during discharge of the projectile and using the high pressure gas and atmospheric pressure gas that rushes back into the firearm barrel to fill the partial vacuum left in the firearm barrel due to the inertia of the high pressure gas leaving the barrel of the firearm.
  • Firearms utilizing a barrel design such as for example cannons, muskets, rifles, hand guns, and the like (hereinafter, collectively, "firearms") date back many centuries.
  • a propellant such as for example gun powder
  • these firearms are capable of propelling projectiles a great distance at a high velocity in a desired direction.
  • Internal Ballistics of Guns is the science of turning the potential energy of a propellant into kinetic energy by burning, and thus releasing, hot high pressure gas to propel a projectile from a gun barrel.
  • Firing a projectile from the barrel of a firearm exerts a shock force over a very short time duration, and is experienced as recoil, also known as "kick back."
  • recoil or rapid acceleration of the firearm imparted toward the breech end of a firearm by firing a projectile, imparts energy to the individual or mechanism holding the firearm and can be mild to devastating to the individual or mechanism holding the firearm, depending on the amount of energy involved, the mass and velocity of the propellant, the mass and velocity of the atmospheric air in front of the projectile, the mass and velocity of the projectile, and the mass of the firearm.
  • the shock force generated by firearm recoil can have a detrimental effect on the firearm and the optics or other sighting system used on the firearm.
  • the muzzle brake is typically attached to the muzzle end of a firearm by threading the exterior of the firearm barrel muzzle and threading the interior of the muzzle brake.
  • This mounting method has long been established as a preferred method of attaching the muzzle brake to the muzzle end of a firearm barrel.
  • the thread size is dependent on the caliber of the firearm and the diameter of the barrel, whereas a larger caliber firearm typically requires a larger thread size on the muzzle end of the barrel and a corresponding larger internal thread in the end of the attachment muzzle brake body.
  • a muzzle brake of this design may be removed and reattached at will.
  • Alternate methods of attachment such as silver solder, press fitting, and clamping to the external diameter of the muzzle end of the firearm are also known.
  • the present general inventive concept augments a firearm in the form of a precision muzzle brake exhibiting refinement of control of the kinetic energy of the atmospheric gas as it is being expelled in front of the projectile and the kinetic energy of the gas produced by the burning propellant behind the projectile to both reduce the recoil of the firearm and stabilize the firearm.
  • Various embodiments of the firearm muzzle brake constructed in accordance with the present general inventive concept are of an advanced precision design that substantially reduces the recoil of a firearm, vertical deflection of the barrel, and the lateral movements of the firearm.
  • Various embodiments of the present general inventive concept may be achieved by providing an advanced firearm muzzle brake utilizing various modern alloy metals such as, chrome-molybdenum steel, precipitation hardening 17-4 stainless steel, 416 stainless steel, and other materials as appropriate in the manufacture of modern firearms.
  • Various embodiments of a muzzle brake may be created as a device to be attached to the muzzle end of firearm, or alternatively may be created as an integral part of a firearm barrel.
  • Various embodiments of a muzzle brake can be created in a variety of external and internal configurations, such as cylindrical, oval, square, and rectangular, but it will be recognized that the present general inventive concept is not limited to these forms.
  • a firearm muzzle brake constructed in accordance with several features of the present general inventive concept features a gas capture chamber disclosing a chamber superior in size to the firearm barrel bore, with a caliber specific orifice end plate distal of the firearm barrel muzzle.
  • the orifice end plate and the gas capture chamber are precision machined with a plurality of openings designed to capture and utilize the column of gas preceding the projectile and exiting the muzzle of the bore of the firearm.
  • a plurality of openings into the gas capture chamber are provided, each opening extending at an angle towards the breech of the firearm.
  • the many openings into the gas capture chamber form geometry conducive to the exploitation of the captured high pressure gas, thereby creating forward thrust on the muzzle brake and firearm, and thus reducing recoil.
  • the number, geometric forms, and distribution of these openings also control muzzle rise and lateral movement when firing.
  • each of the openings defines a truncated socket form that presents a small area to capture part of the column of high pressure gas preceding the projectile exiting the muzzle of the bore of the firearm.
  • the preferred form of the openings is cylindrical in shape with a spherical truncated socket form that does not penetrate to the full diameter of the cylindrical opening, thereby leaving a truncated spherical nozzle at the interface between the opening and the interior wall of the gas capture chamber.
  • the "First Event of the Internal Ballistics processes,” or “First Event,” is where the majority of the column of high pressure gas preceding the projectile is captured by the gas capture chamber and utilized by the muzzle brake to reduce the recoil, muzzle rise, and lateral movement of the firearm.
  • First Event as a projectile leaves the bore of a firearm and travels through the muzzle brake, the column of high pressure gas preceding the projectile is acting as a fluid, and the muzzle brake utilizes the kinetic energy of this fluid to counter the recoil by acting against the caliber specific orifice end plate until the projectile exits the muzzle brake.
  • the restriction at the orifice causes a substantial portion of the high pressure gas to be diverted into the major truncated socket forms and out and rearward by the forward most openings in the muzzle brake, whereupon this diverted high pressure gas imparts energy in a forward direction to the muzzle brake and to the firearm, thereby reducing recoil, muzzle rise, and lateral movement.
  • “Second Event” is the restriction of the high pressure gases at the orifice end plate, whereby this forces a portion of the column of gas acting as a fluid to be expelled through the minor truncated socket forms that are the next set of openings towards the breech. A diminished portion of the column of high pressure gas acting as a fluid is expelled through the next set of minor truncated socket forms that are the next set of opening towards the breech. The process continues as each portion of high pressure gas is expelled from the muzzle brake. This process of stages reduces the recoil at the beginning, and throughout all the stages, to reduce the recoil, muzzle rise, and lateral movement. [0018] The "Main Event of Internal Ballistics," or “Main Event,” now follows.
  • the projectile exiting the bore of the firearm is followed by a column of hot high pressure gas acting as a fluid, and is now captured by the gas capture chamber and is utilized by the caliber specific orifice end plate to reduce recoil, muzzle rise, and lateral movement as the projectile exits the muzzle brake of the firearm.
  • Part of this captured hot high pressure gas is expelled out through, and rearward, by the major truncated socket forms and associated openings, imparting more forward thrust on the firearm.
  • the second part of this "Main Event of Internal Ballistics" is the restriction of the caliber specific orifice end plate, causing pressure to build in the muzzle brake and forces a portion of the column of hot high pressure gas acting as a fluid to be expelled by the next set of truncated socket forms and openings toward the breach of the firearm reducing recoil, muzzle rise, and lateral movement.
  • the third part of this event process is a diminished portion of the column of hot high pressure gas acting as a fluid to be expelled at the next set of truncated socket forms and openings. The process continues as each portion of hot high pressure gas is expelled from the muzzle brake. This process of events propels the firearm forward, further reducing the recoil. All these forces are utilized to reduce the recoil, muzzle rise, and lateral movement.
  • the muzzle brake has an unusual and inventive way of capturing the column of high pressure gas heretofore not utilized, first as high pressure gas preceding the projectile, then as hot high pressure gas following the projectile, and then acting by redirecting both to create thrust within the muzzle brake forcing it forward against the recoil and down against the associated muzzle rise and lateral movement.
  • two separate events are utilized to propel the firearm forward, reducing recoil, muzzle rise, and lateral movement. These two events are followed by a third event:
  • the "Third Event of the Internal Ballistics processes,” or “Third Event,” occurs when, as the last of the hot high pressure gas exits the caliber specific muzzle end plate orifice, and through the truncated socket forms. Because all of the hot high pressure gas has exited the muzzle brake at supersonic speed, due to inertia, a "partial vacuum” now exists in the firearm barrel and muzzle brake, and atmospheric gas then begins to rush back into the muzzle brake and firearm barrel at supersonic speed through the truncated socket forms and the caliber specific end plate orifice.
  • the muzzle brake end plate with a caliber specific orifice acts as a restriction point for the atmospheric gas to fill the "partial vacuum" in the muzzle brake and firearm barrel.
  • the plurality of truncated socket forms through the muzzle brake body penetrating into the gas capture chamber allow a very fast intake of atmospheric gas to fill the muzzle brake and firearm barrel, and in this moment the truncated socket forms "working in reverse gas flow” pull the muzzle brake and firearm forward, further reducing the recoil.
  • FIG. 1A is a cross-sectional view of a muzzle brake body, in attachable and removable form, for a firearm disclosing an internal gas capture chamber utilizing a plurality of precision radially skewed vents with truncated socket end forms, partially penetrating the gas capture chamber wall and significantly penetrating the caliber specific muzzle brake exit orifice end plate.
  • FIG. IB is an end view of the portion of the muzzle brake body shown in cross-section in FIG. 1A
  • FIG. 2A is a partial cross-section view of a firearm barrel for the muzzle brake to be attached to.
  • FIG. 2B is a cross-sectional view of a muzzle brake body, in attachable and removable form, for a firearm disclosing an internal gas capture chamber utilizing a plurality of precision radially skewed vents with truncated socket end forms, partially penetrating the gas capture chamber wall and significantly penetrating the threaded caliber specific insert orifice end plate of the muzzle brake.
  • FIG. 2C is an end view of the portion of the muzzle brake body shown in cross-section in FIG. 2B
  • FIG. 3A is a cross-sectional view of a muzzle brake body, as an integral part of the firearm barrel, disclosing an intemal gas capture chamber utilizing a plurality of precision radially skewed vents with truncated socket end forms, partially penetrating the gas capture chamber wall and significantly penetrating the caliber specific muzzle brake exit orifice end plate.
  • FIG. 3B is a cross-sectional view in the plane along line 3B-3B of the muzzle brake body shown in FIG. 3A.
  • FIG. 4 is a cross-sectional view of a muzzle brake body, as an integral part of the firearm barrel, with a projectile entering the intemal gas capture chamber utilizing a plurality of internal precision radially skewed vents with truncated socket end forms, partially penetrating the gas capture chamber wall and significantly penetrating the caliber specific muzzle brake exit orifice end plate.
  • FIG. 5 is a cross-sectional view of a muzzle brake body, as an integral part of the firearm barrel, with a projectile exiting the intemal gas capture chamber utilizing a plurality of precision radially skewed vents with truncated socket end forms, partially penetrating the gas capture chamber wall and significantly penetrating the caliber specific muzzle brake exit orifice end plate.
  • FIG. 6 is an enlarged partial vertical cut cross-sectional view for clarity, of a muzzle brake body exhibiting the internal gas capture chamber utilizing a plurality of precision radially skewed vents with truncated socket end forms, partially penetrating the gas capture chamber wall and significantly penetrating the caliber specific muzzle brake exit orifice end plate.
  • FIG. 7 is a cross-sectional view of a muzzle brake body in attachable and removable form for a firearm disclosing an internal gas capture chamber utilizing a plurality of precision radially skewed vents with truncated socket end forms, partially penetrating the gas capture chamber wall and significantly penetrating the caliber specific muzzle brake exit orifice end plate being as an integral part of the muzzle brake depicting one of many possible alternate vent and truncated socket forms.
  • FIG. 8A through FIG. 8E are cross-sectional views of a firearm barrel without a muzzle brake, and a depiction of its reaction when discharged.
  • FIG. 9A through FIG. 9D are cross-sectional views of a firearm barrel with a muzzle brake, and a depiction of its lack of reaction when discharged.
  • FIG. 10A is a cross-sectional view of another embodiment of a muzzle brake body, in attachable and removable form, for a firearm disclosing an internal gas capture chamber utilizing a plurality of rows of precision radially skewed vents with truncated socket end forms, partially penetrating the gas capture chamber wall and significantly penetrating the caliber specific muzzle brake exit orifice end plate.
  • FIG. 10B is a rearward end view of the muzzle brake body of FIG. 10A.
  • FIG. IOC is a cross-sectional view in the plane along line IOC- IOC of the muzzle brake body shown in FIG. 10A.
  • FIG. 10D is a cross-sectional view in the plane along line 10D-10D of the muzzle brake body shown in FIG. 10A.
  • FIG. 1A illustrates one embodiment of muzzle brake 1 constructed in accordance with various features of the present general inventive concept.
  • a muzzle end of a firearm barrel 70 is illustrated.
  • the firearm barrel 70 defines a substantially cylindrical bore 75 defining rifling therein and opens outwardly to a muzzle end 81 (see FIG. 2A) thereof.
  • the illustrated muzzle end 81 defines a plurality of external threads of the type commonly used to attach any of various firearm accessories thereto.
  • a muzzle brake 1 having a generally internally and externally cylindrical shape and having a first end defining an internally threaded 80 opening adapted to mate with and engage the external threads of the externally threaded muzzle end 81 of the firearm barrel 70 in order to secure the muzzle brake 1 to the firearm barrel 70.
  • the internally threaded 80 first end of the muzzle brake 1 opens to an internal cavity of the muzzle brake 1 defining a substantially cylindrical gas capture chamber 3.
  • the gas capture chamber 3 defines a central axis which, when the muzzle brake 1 is secured to the firearm barrel 70 via the first end threads 80, is held coaxial with a centerline 121 of the bore 75.
  • the diameter of the cylindrical gas capture chamber 3, which is perpendicular to the central axis thereof, is sized superior to the cross-sectional diameter of the bore 75, such that the cross-sectional width of the gas capture chamber 3 is superior in size to the bore 75.
  • I defines an end plate 2 having an internal face wall 8 forming a forward end of the gas capture chamber 3.
  • the end plate 2 further defines a substantially cylindrical orifice 7 coaxial with the central axis of the gas capture chamber 3 and the centerline 121 of the bore 75.
  • the orifice 7 is sized to closely conform to the outer diameter of a projectile 100 fired from the firearm barrel 70.
  • An external rim of the orifice 7 defines a 60 degree chamfer 9 extending annularly thereabout, and opening to a forward, outer surface of the end plate 2.
  • the muzzle brake 1 utilizes an end plate that is an integral part of the body of the muzzle brake.
  • a plurality of vent ports 4 are defined in radially skewed
  • Each of the vent ports defines generally an opening extending from an external side surface of the body of the muzzle brake 1 radially inwardly toward the central axis of the gas capture chamber 3 and slightly forward toward the muzzle brake second end, such that each vent port extends at a 105 degree angle 10 relative to the center line 121 of the bore of the firearm and the central axis of the gas capture chamber 3.
  • a first set of vent ports 4 extends in a radially skewed 11 pattern about the central axis of the gas capture chamber 3.
  • Each vent port 4 of this first, forward most set extends from a forward portion of the external side surface of the body of the muzzle brake 1 into the intersection between the forward end of the gas capture chamber 3 and the end plate 2 face wall 8. At this location, each of the vent ports 4 terminates inwardly with the formation of a major truncated socket form 5 which is defined at least partially by the end plate 2 and intersects with the end plate inner face wall 8.
  • additional sets of vent ports 4 are provided along the length of the muzzle brake 1, each such vent port 4 extending from the external side surface of the body of the muzzle brake 1 radially inwardly and into the gas capture chamber 3.
  • Each of these additional sets of vent ports 4 extends in a radially skewed 11 pattern about the central axis of the gas capture chamber 3, and each of these sets of vent ports 4 is circumferentially skewed in relation to the immediately preceding and subsequent sets of vent ports.
  • each of these vent ports 4 extends approximately to the curved interior side surface of the gas capture chamber 3, whereupon each of these vent ports 4 terminates inwardly with the formation of a minor truncated socket form 6 which intersects with, and opens to, the curved interior side surface of the gas capture chamber 3.
  • each vent port 4 defines a generally cylindrical shape
  • each corresponding major truncated socket form 5 defines a portion of a semi- spherical shape which intersects both with respective interior surfaces of the vent port 4 and with an interior rim of the end plate orifice 7.
  • each of the minor truncated socket forms 6 defines a truncated spherical shape which intersects both with respective interior surfaces of the vent port 4 and with an interior side surface of the gas capture chamber 3.
  • suitable shapes exist for the vent ports 4 and the major and minor truncated socket forms 5, 6, and such alternate shapes may be used without departing from the spirit and scope of the present general inventive concept.
  • FIG. IB there is shown a cross-sectional view of a muzzle brake 1 being externally and internally cylindrical in shape and having a gas capture chamber 3 superior in size to the bore 75.
  • the muzzle brake 1 features a threaded 90 gas capture chamber insert end plate 2 exhibiting a plurality of radially skewed (11, FIG. 3B) precision angle 10 vent ports 4, introduced at a 105 degree angle 10 relative to the center line 121 of the bore of the firearm and the direction of the path (131, FIG. 9A) of the projectile 100.
  • major truncated socket forms 5 are formed at and in conjunction with said 105 degree angle 10 vent ports introduced substantially into said gas capture chamber 3 end plate 2 face wall 8 of the threaded 90 gas capture chamber 3 insert end plate 2.
  • the illustrated muzzle brake 1 which is externally and internally cylindrical in shape and having a gas capture chamber 3 that features and exhibits a plurality of radially skewed (11, FIG. 3B), precision angle 10 introduced vent ports 4 at said 105 degree angle 10 relative to the center line 121 of the bore of the firearm and the direction of said path (131, FIG. 9A) of said projectile 100, minor truncated socket forms 6 are formed at and in conjunction with said 105 degree angle 10 vent ports 4.
  • the muzzle brake 1 is internally threaded 80 for attachment to any appropriately externally threaded 81 muzzle end of a firearm barrel 70 of compatible size and caliber and is thus an attachment and accessory that can be attached or removed from the firearm.
  • the gas capture chamber 3 within said muzzle brake 1 captures the high pressure gas acting as a column of fluid that is forced into the gas capture chamber 3. This is the First Event acted on by said muzzle brake 1 in the chain of events relating to the Internal Ballistics of a firearm.
  • the gas capture chamber 3 that features a threaded 90 gas capture chamber, insert end plate 2 exhibiting a plurality of radially skewed (11, FIG. 3B), precision angle 10 vent ports 4.
  • Said vent ports 4 are by design introduced at a said 105 degree angle 10 relative to the center line 121 said bore 75 of the firearm and in the direction of the path (131, FIG. 9A) said projectile 100.
  • Said vent ports 4 at said 105 degree angle 10 define said major truncated socket forms 5 at and in conjunction with said 105 degree angle 10 vent ports 4 substantially introduced into the said gas capture chamber 3 end plate 2, internal face wall 8 of the threaded 90 gas capture chamber 3 insert end plate 2.
  • Alternate design of said vent ports 4 at said 105 degree angle 10 are to be contemplated in this comprehensive Physics teaching of muzzle brake Dynamics as to, The Study of Motion: The branch of mechanics that deals with motion and the way in which forces produces this motion.
  • Said vent ports 4 at said 105 degree angle 10 can, by design, be introduced at any angle from an angle of 90 degrees up to an angle of 135 degrees towards the breech of the firearm relative to said center line 121 of the bore 75 of the firearm and the direction of the path (131, FIG. 9A) of said projectile 100.
  • the preferred embodiment of the muzzle brake 1 invention discloses a gas capture chamber 3 that distinctly and for clarity exhibits a plurality of radially skewed (11, FIG. 3B), precision angle 10 introduced vent ports 4 at said 105 degree angle 10 and that define minor truncated socket forms 6 at and in conjunction with said 105 degree angle 10 vent ports 4.
  • Said minor truncated socket forms 6 preferably fail total penetration into the said gas capture chamber 3 interior wall thereby exhibiting vent ports 4 at said 105 degree angle 10 with a nozzle shaped truncated socket form 6 at the internal diameter interface with said gas capture chamber 3.
  • Said minor truncated socket forms 6 can, by design, penetrate in depth by varying amounts into said gas capture chamber 3 at the internal diameter interface, and can be on the order of 10 percent penetration, and up to 99.9 percent penetration at the internal diameter interface of said gas capture chamber 3.
  • FIG. 3A illustrates an alternate, monolithic embodiment of a muzzle brake 25 with a barrel blend form 20 of the muzzle brake 25.
  • the gas capture chamber 3 first captures the highly compressed column of Atmosphere gas in the firearm bore 75 and said gas capture chamber 3 as it precedes the projectile 100 prior to the projectile 100 entering into the gas capture chamber 3 of the monolithic embodiment muzzle brake 25. Whereas this is the beginning of the First Event in the chain of events that reduce recoil, muzzle rise, and lateral movement in the firearm.
  • FIG. 4 what is shown is a cross-sectional view of the alternate embodiment of the monolithic muzzle brake, that is, a cross-sectional view of the firearm barrel 70 with integral muzzle brake 25, featuring a monolithic embodiment and being in a cylindrical form with said gas capture chamber 3.
  • a projectile 100 beginning to exit the firearm barrel bore 75.
  • the firearm muzzle brake 25 accomplishes a series of events that first captures the highly compressed column of atmospheric gas preceding the projectile 100 prior to said projectile 100 passing through the said gas capture chamber 3 of said muzzle brake 25.
  • the highly compressed column of atmospheric gas preceding the projectile 100 attains a high pressure of approximately 20,000 pounds per square inch, and has nearly equalized with the hot high pressure expanding gas in the firearm barrel bore 75 that is propelling the projectile 100 forward, this compressed column of atmospheric gas acts within the gas capture chamber 3 by impacting the gas capture chamber 3 end plate wall 8 and is then restricted by the orifice 7.
  • this column of high pressure atmospheric gas imparts substantial energy to the end plate wall 8.
  • This high pressure gas is then diverted into said major truncated socket forms 5 and out exhaust port vents 4 at said 105 degree angle 10 resulting in more energy being imparted to the muzzle brake, thereby reducing recoil.
  • the second and more substantial mass and energy of the hot high pressure gas following the projectile is forced into the major truncated socket forms 5 and is expelled from the vent ports 4 at said 105 degree angle 10, and then the following hot high pressure gas is forced into and acts upon said minor truncated socket forms 6 and out exhaust port vents 4 at said 105 degree angle 10, thereby imparting force in the forward direction and thus further reducing the recoil of the firearm.
  • the projectile 100 enters and substantially fills and restricts the orifice 7.
  • the expanding hot high pressure gas is unable to exit, or at least is severely restricted from exiting, the gas capture chamber 3 through the orifice 7.
  • the expanding hot high pressure gas nonetheless exerts significant pressure on the interior face wall 8 of the end plate 2.
  • the expanding hot high pressure gas is forced through the major truncated socket forms 5 and is expelled from the vent ports 4 associated therewith, and additional hot high pressure gas is forced through the minor truncated socket forms 6 and is expelled from the vent ports associated therewith.
  • the gas expelled through the various vent ports 4 results in significant force being imparted in the forward direction of the firearm barrel 70 and associated muzzle brake 25, thereby further reducing the recoil of the firearm.
  • the projectile 100 now exits the muzzle brake orifice 7 end plate (2 FIG. 2B).
  • the firearm barrel bore 75 and the muzzle brake 25 gas capture chamber 3 and exhaust ports 4 have exhausted all the hot high pressure gas and with completion of this event, due to the inertia of the hot high pressure gas there now exists a "partial vacuum" in the firearm barrel bore 75 and in the muzzle brake 25 and associated vent ports 4.
  • vent ports 4 at said 105 degree angle 10 offer substantially less resistance to the atmospheric gas flow into the muzzle brake 25 with said gas capture chamber 3 and firearm barrel bore 75 than does the caliber specific orifice 7.
  • FIG. 9A through FIG. 9D a firearm barrel equipped with a muzzle brake
  • FIG. 5 On consideration of findings, is the belief that, the projectile 100 flight path 131 is stabilized on exiting the muzzle brake 25 orifice 7, and is influenced by orifice 7 and the 60 degree included angle chamfer 9. This small distance of projectile flight path 131 through orifice 7 and 60 degree chamfer 9 has the effect of realigning and damping the minute wobble of the projectile axis 141 of projectile 100 upon leaving the muzzle brake orifice 7 60 degree included angle chamfer 9.
  • FIG. 8A through FIG 8E there is depicted a firearm barrel 70 without a muzzle brake attached.
  • FIG. 8A depicts initiation of firing before any movement has begun.
  • the centerline 141 of the projectile 100 is aligned with the centerline 121 of the firearm bore 75 and with the intended flight path 131 of projectile 100.
  • the firearm barrel 70 begins to exhibit the effect of recoil and barrel rise.
  • the projectile 100 and centerline 141 are still aligned with the centerline 121 of the bore 75 and the flight path 131 of the projectile 100.
  • the firearm barrel 70 now exhibits the continuing effects of recoil, whereas the hot high pressure gas is being expelled from the bore 75 of the firearm, whereby the ensuing turbulence exerts asymmetrical force to the base of proj ectile 100 causing further disruption to the stability of the projectile 100 and causing the centerline of the projectile 141 to be pushed further out of alignment with the intended flight path 131 and greater inaccuracy.
  • the gyroscopic effect of the spin imparted to the projectile 100 by the rifling in the firearm bore 75 will begin to stabilize the projectile after going through several oscillations.
  • FIG. 9A through FIG. 9D Citing FIG. 9A through FIG. 9D, with an embodiment of a muzzle brake 1 attached to the firearm barrel 70, very little movement due to recoil is imparted to the firearm barrel 70. Thus, the base of the projectile 100 is not pushed off the centerline of the flight path 131 to nearly as great an extent, thereby not disrupting the intended flight path 131 of the projectile 100 and improving the accuracy of the system.
  • the plurality of radially skewed, precision angle 10 introduced vent ports 4 are disposed about the entire circumference of the muzzle brake 1, such that the various ports 4 cooperate to define an array of vents surrounding the circumference of the gas capture chamber 3.
  • the present general inventive is not limited to such configurations.
  • the various ports 4 are arranged in longitudinally-extending rows of two or more rows extending along the longitudinal dimension of the muzzle brake 1.
  • FIGS. 10A-10D One such embodiment is illustrated in FIGS. 10A-10D herein, in which one embodiment of a muzzle brake is identified at la.
  • four rows of vent ports 4 are provided, with each row extending generally along a longitudinal dimension of the muzzle brake la. More specifically, in the illustrated embodiment, a first pair of rows of vent ports 4a and a second pair of rows of vent ports 4b are provided.
  • each row of vent ports of the first pair 4a is disposed and extends along one of respective opposite horizontal longitudinal centerlines 200a, 200b of the gas capture chamber 3 of the muzzle brake la, at locations radially horizontal about the bore centerline.
  • each vent port 4 of the first pair of rows 4a defines a central bore axis that extends along a horizontal center plane of the muzzle brake la, coplanar along the bore centerline, and at an angle of approximately 105 degrees with the bore centerline.
  • each row of vent ports of the second pair 4b extends along a plane which extends radially outwardly from the bore centerline and intersects with one of opposite longitudinal lines 202a, 202b along the body of the muzzle break la.
  • the longitudinal lines 202a, 202b each extend along portions of the body of the muzzle break la located radially above the horizontal longitudinal centerlines 200a, 200b.
  • the longitudinal lines 202a, 202b are at horizontally coplanar locations along the muzzle brake la in relation to one another, and are radially offset above a corresponding one of the horizontal longitudinal centerlines 200a, 200b by an angle, ⁇ .
  • each individual vent port 4 of each second pair of rows 4b is disposed at a longitudinally offset location along its respective longitudinal line 202a, 202b between a pair of corresponding vent ports 4 of the corresponding row of the first pair of rows 4a.
  • each row of the first pair 4a cooperates with a corresponding row of the second pair 4b to define a respective one of two left and right sets of rows of vent ports.
  • a first row of vent ports 4a extends along horizontal longitudinal centerline 200a
  • a second row of vent ports 4b extends along longitudinal centerline 202a.
  • a first row of vent ports 4a extends along horizontal longitudinal centerline 200b
  • a second row of vent ports 4b extends along longitudinal centerline 202b.
  • An angle ⁇ is defined by the intersection of a plane extending from the horizontal longitudinal centerline 200a to the bore centerline, and a plane extending from the bore centerline to the longitudinal line 202a.
  • the same angle ⁇ is defined by the intersection of a plane extending from the horizontal longitudinal centerline 200b to the bore centerline, and a plane extending from the bore centerline to the longitudinal line 202b.
  • This configuration is useful, for example, in an application in which the muzzle brake la is secured to a bore of a firearm in which the natural recoil thereof tends to urge the bore in a rearward-and-upward direction, such, for example, as commonly occurs with many common designs of handguns and rifles.
  • vent ports may be used, and the specific locations of rows above or below the horizontal longitudinal plane of the muzzle brake, as well as the angle ⁇ of offset between corresponding rows 4a, 4b of vent ports, may vary from embodiment to embodiment in order to optimize the relative magnitudes of forward and/or downward and/or upward forces exerted by the muzzle brake la.
  • two rows 4a, 4b of vent ports are provided along each of opposite sides of the muzzle brake la, and the angle ⁇ of offset between corresponding rows is approximately 30 degrees.
  • numerous other configurations of vent ports exist which may be utilized without departing from the spirit and scope of the present general inventive concept.
  • the number of rows of vent ports, and the number of vent ports per rows may vary, for example, to correspond with a specific bore and with a specific energy output of a desired firearm in order to counteract the specific recoil characteristics imparted by the firearm.
  • more or fewer rows of vent ports may be used, and the vent ports may be arranged in other configurations, in addition to or in the alternative to rows, in order to achieve a desired distribution of force along the muzzle brake 1 to oppose recoil of the firearm.
  • Other angles of radial offset between the various rows 4a, 4b of vent ports may be employed without departing from the spirit and scope of the present general inventive concept.
  • Second Event, and the Third Event utilize a percentage of the captured kinetic energy from each event to reduce recoil, muzzle rise, and lateral movement that would be lost by direct venting in prior art inventions, as they do not utilize the novel and substantial high pressure gas controlling functions of the caliber specific orifice 7 end plate 2 and the gas capture chamber 3 with major truncated socket forms 5 and the minor truncated socket forms 6 of the current invention.
  • the Science of Internal Ballistics one must, with due diligence and research, identify all the various components, actions, events, and forces in play propelling a projectile 100 out of the barrel 70 of a firearm and those forces that can be used to reduce or eliminate recoil, muzzle rise and lateral movement.

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  • General Engineering & Computer Science (AREA)
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Abstract

L'invention concerne un frein de bouche de canon pour fusils, armes de poing, mitrailleuses et artillerie de grande puissance, offrant une capacité de stabilisation de tube d'arme et de réduction du recul, en capturant des gaz contre une plaque d'extrémité d'orifice et en redirigeant lesdits gaz tant hors du frein de bouche de canon que dans le frein de bouche de canon pour remplir le vide partiel laissé par les gaz haute pression sortants, au moyen de formes de douille tronquées majeures, et dans une moindre mesure, avec l'utilisation de formes de douille tronquées mineures, et leurs orifices d'aération associés dans un motif asymétrique qui équilibre la levée de la bouche de canon et le recul contre les gaz attendus et récupérés.
PCT/US2018/018319 2017-02-15 2018-02-15 Frein de bouche de canon de réduction de recul et de stabilisation de tube d'arme WO2018152299A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18755078.5A EP3583374A4 (fr) 2017-02-15 2018-02-15 Frein de bouche de canon de réduction de recul et de stabilisation de tube d'arme

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762459338P 2017-02-15 2017-02-15
US62/459,338 2017-02-15

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WO2018152299A1 true WO2018152299A1 (fr) 2018-08-23

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5675107A (en) * 1995-01-18 1997-10-07 Giat Industries Muzzle brake for medium or large caliber cannons
US5844162A (en) 1996-03-13 1998-12-01 Renner; Roger J. Muzzle venting in muzzleloading rifles
US20040244571A1 (en) * 2003-04-08 2004-12-09 Bender Terrence Dwight Recoil and muzzle blast dissipator
US20140165438A1 (en) * 2011-12-12 2014-06-19 Sturm, Ruger & Company, Inc. Matched muzzle brake-weight system for firearms
US20150192379A1 (en) * 2014-01-08 2015-07-09 Rock River Arms, Inc. Muzzle Brake For Firearm

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR656608A (fr) * 1927-07-04 1929-05-10 Anciens Ets Skoda Frein de bouche
US5476028A (en) * 1994-10-28 1995-12-19 Seberger; Oswald P. Gun muzzle brake

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5675107A (en) * 1995-01-18 1997-10-07 Giat Industries Muzzle brake for medium or large caliber cannons
US5844162A (en) 1996-03-13 1998-12-01 Renner; Roger J. Muzzle venting in muzzleloading rifles
US20040244571A1 (en) * 2003-04-08 2004-12-09 Bender Terrence Dwight Recoil and muzzle blast dissipator
US20140165438A1 (en) * 2011-12-12 2014-06-19 Sturm, Ruger & Company, Inc. Matched muzzle brake-weight system for firearms
US20150192379A1 (en) * 2014-01-08 2015-07-09 Rock River Arms, Inc. Muzzle Brake For Firearm

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3583374A4 *

Also Published As

Publication number Publication date
EP3583374A1 (fr) 2019-12-25
EP3583374A4 (fr) 2021-01-06

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