Choke Devices Patents (Class 42/79)
  • Patent number: 10036605
    Abstract: Adjustable stabilizing attachments for a firearm and, more particularly, to adjustable stabilizing devices that may be attached to the muzzle end of the firearm to assist in reducing forces exerted during firing, such as lateral shift, vertical displacement, or longitudinal twisting as well as assisting in suppression of muzzle flash, reduction in recoil and/or firing noise and concomitant firing concussion are herein disclosed. The multi-position devices are useful for, inter alia, adapting a firearm's capabilities to meet the needs of firing situations presented to the user, without the need to switch to alternative devices.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: July 31, 2018
    Inventor: Kurt A. Kosman
  • Patent number: 9810501
    Abstract: A gun standoff device may include an elongated body having crenulations at a first end and an attachment mechanism at a second end. The crenulations at the first end may provide a plurality of radially disposed teeth about the circumference of the first end. The attachment mechanism may allow attachment of the elongated body to a gun barrel, a gun magazine, or other gun component.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: November 7, 2017
    Inventor: Frank Edward McNitt
  • Patent number: 9797672
    Abstract: A tunable muzzle compensator for a weapon such as a firearm that includes a tube that extends the barrel of the weapon by fitting over the muzzle or is directly integrated into the barrel. This center tube, or modified barrel includes one or more holes along its length. One or more removable sections that have gas exit ports at various predetermined angles fit over the center section. Removable sections can be rotated to either turn off top holes on the center tube or to choose different angles of gas discharge The total effect of all the removable sections represents a particular tuning for the weapon. The weapon can be very quickly tuned on the range or in the field to compensate for weight of the projectile, the charge, and the shooting style by simply replacing and/or reversing removable sections with sections that have different angles of discharge.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: October 24, 2017
    Inventor: Brian Wilson
  • Patent number: 9518794
    Abstract: Interchangeable choke tube for the shot load of smoothbore shotgun which causes to the shot load gradually initial tightening of progressive form, expansion and final retightening (7), featuring internally initial tightening of progressive form section (8) followed by expansion section (9) and which is followed by final retightening section (10), which achieves the improvement of the effectiveness of the shot as, first, the initial tightening of progressive form section (8) featured applies to the shot charge, as it passes through it, vertical lateral pressure which splits the aggregates of shot pellets and second, the expansion section (9) which follows causes ameliorative rearrangement of the shot pellets as they are deploying in a space with larger diameter and, in this way, and their smoother entrance into the final retightening section (10) with result the improvement of their distribution within their pattern, something that is not happening with the hitherto existing ones.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: December 13, 2016
    Inventor: Christos Sotiropoulos
  • Patent number: 9513078
    Abstract: A firearm barrel accessory that quick connects and disconnects to a firearm barrel by rotating is described. The accessory may be a firearm suppressor with a silencer barrel, a mount retention ring located inside the silencer barrel that includes longitudinal grooves that lead to circumferential grooves that have a first radial side and a second radial side. The firearm barrel is attached to a muzzle break that may include a plurality of lugs that fit into longitudinal grooves. After placement in the longitudinal grooves, the silencer barrel and mount retention ring are rotated/twisted about the silencer barrel longitudinal axis so that the circumferential grooves move relative to the lugs until the lugs contact the second radial side, at which point the mount retention ring ceases to rotate while the silencer barrel continues to rotate. A ratchet retention ring may exert tension on the mount retention ring in the rearward direction.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: December 6, 2016
    Assignee: Precision Tooling Products, LLC
    Inventors: Joshua S. Fulton, Timothy C. Fulton
  • Patent number: 9297600
    Abstract: A firearm choke tube includes a cylindrical body, a choke interrupted thread section, and a locking tab. The choke interrupted thread section is positioned on an outer surface of the cylindrical body and configured to threadably engage an interrupted thread section of a barrel of a firearm to limit longitudinal movement of the cylindrical body relative to the barrel. The locking tab protrudes from the outer surface of the cylindrical body and is configured to interface with a detent formed in the barrel to limit rotational movement of the cylindrical body relative to the barrel.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: March 29, 2016
    Assignee: BROWNING
    Inventor: Nicholas P. Schafer
  • Patent number: 8978286
    Abstract: A firearm choke tube includes a cylindrical body, a choke interrupted thread section, and a locking tab. The choke interrupted thread section is positioned on an outer surface of the cylindrical body and configured to threadably engage an interrupted thread section of a barrel of a firearm to limit longitudinal movement of the cylindrical body relative to the barrel. The locking tab protrudes from the outer surface of the cylindrical body and is configured to interface with a detent formed in the barrel to limit rotational movement of the cylindrical body relative to the barrel.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: March 17, 2015
    Assignee: Browning
    Inventor: Nicholas P. Schafer
  • Patent number: 8893421
    Abstract: A muzzle attachment for a shotgun is disclosed including a first portion that has a first end, a second end, a central axis extending from the first end to the second end, and a through bore extending from the first end to the second end, concentric about the axis. The muzzle attachment also includes a second portion having a pair of opposing extensions defining a gap therebetween. Each extension has a base adjacent the second end of the first portion and a distal end extending away from the base. Additionally, the gap has a narrow end adjacent the base, a wide end adjacent to the distal end, and a pair of opposing lateral sides extending along a projection of the axis. Each of the sides includes a webbing disposed at the narrow end; wherein each webbing has an inner surface, an outer surface, and a radial thickness which tapers from the narrow end to the wide end.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: November 25, 2014
    Assignee: Paradigm SRP, LLC
    Inventor: Joseph Todd Degidio
  • Patent number: 8844187
    Abstract: A weapon barrel of an automatic firearm contains a muzzle that is set into flexural oscillations by firing, with a damping device for damping the flexural oscillations by frictional processes between a radially projecting friction ring disposed on the muzzle and at least one friction element loaded by of a spring element. Wherein at least one friction element loaded by a separate spring element acts on both sides of the friction ring respectively and is supported so as to be axially movable relative to the muzzle.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: September 30, 2014
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventors: Axel Pfersmann, Rainer Himmert
  • Patent number: 8752324
    Abstract: This invention is in relation to a shotgun choke tube made of aluminum in which sometimes this aluminum choke tube may be coated with an anodize, hard coating or plating of some sort to increase hardness, strength, lubricity, corrosion resistance, etc to the aluminum. The aluminum choke tube is composed of a cylindrical tube having a sealing face against the bore of the shotgun bore, multiple clearance diameters, an outside body diameter, threads and on the extended version choke tubes, there is a portion of diameter that extends outward beyond the end of the muzzle of the shotgun barrel. The inside diameters are comprised of tapers, sometimes straights and multiple geometries to act as somewhat of a funnel. The aluminum choke tube is held in place securely inside the shotguns barrel by means of usually a thread or other geometrical design created by the shotgun manufacturer.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: June 17, 2014
    Inventor: James Richard Muller
  • Publication number: 20140130391
    Abstract: A muzzle attachment for a shotgun is disclosed including a first portion that has a first end, a second end, a central axis extending from the first end to the second end, and a through bore extending from the first end to the second end, concentric about the axis. The muzzle attachment also includes a second portion having a pair of opposing extensions defining a gap therebetween. Each extension has a base adjacent the second end of the first portion and a distal end extending away from the base. Additionally, the gap has a narrow end adjacent the base, a wide end adjacent to the distal end, and a pair of opposing lateral sides extending along a projection of the axis. Each of the sides includes a webbing disposed at the narrow end; wherein each webbing has an inner surface, an outer surface, and a radial thickness which tapers from the narrow end to the wide end.
    Type: Application
    Filed: October 8, 2012
    Publication date: May 15, 2014
    Applicant: PARADIGM SRP, LLC
    Inventor: Paradigm SRP, LLC
  • Patent number: 8713839
    Abstract: A firearm with a barrel that uses an ammunition discharge chamber that includes improved throat located between the chamber's free bore and the rifle bore. The improved throat includes a relatively short, inward aligned first step, an intermediate elongated cylindrical body, and a longer, inward aligned second tapered step. Formed on the inside surfaces of the first step, the elongated body and the second step are rifling grooves and lands that gradually their depths and heights from rear to front direction. The two steps are tapered inward between 1.0 to 1.5 degrees. Using a short first step, an elongated cylindrical body with straight sidewalls, a longer second step with continuous grooves and lands that begin gradually in depth and height from rear to front directions, chamber pressure is reduced thereby enabling more gun powder to be used and bullet misalignment in the rifle bore is reduced.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: May 6, 2014
    Inventor: Shawn Carlock
  • Publication number: 20140096426
    Abstract: A firearm choke tube includes a cylindrical body, a choke interrupted thread section, and a locking tab. The choke interrupted thread section is positioned on an outer surface of the cylindrical body and configured to threadably engage an interrupted thread section of a barrel of a firearm to limit longitudinal movement of the cylindrical body relative to the barrel. The locking tab protrudes from the outer surface of the cylindrical body and is configured to interface with a detent formed in the barrel to limit rotational movement of the cylindrical body relative to the barrel.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 10, 2014
    Applicant: Browning
    Inventor: Browning
  • Publication number: 20140041274
    Abstract: A weapon barrel of an automatic firearm contains a muzzle that is set into flexural oscillations by firing, with a damping device for damping the flexural oscillations by frictional processes between a radially projecting friction ring disposed on the muzzle and at least one friction element loaded by of a spring element. Wherein at least one friction element loaded by a separate spring element acts on both sides of the friction ring respectively and is supported so as to be axially movable relative to the muzzle.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 13, 2014
    Applicant: DIEHL BGT DEFENCE GMBH & CO. KG
    Inventors: AXEL PFERSMANN, RAINER HIMMERT
  • Patent number: 8584391
    Abstract: A shotgun has a telescoping barrel made of concentric barrel sections slidably engaged together. These include at least an inner barrel section and an outer barrel section. A grip on the outer barrel section aids telescopic movement. A locking pin secures or releases the barrel sections. The barrel sections have protrusions that interfere with further outward movement once fully telescoped out. The grip may have a channel to permit a pistol grip to slide onto the grip. A second pistol grip may be connected to the trigger. The butt of the gun may slide out to make a shoulder rest. A butt plate is connected to a rod that slides into and out of the shotgun. The rod has teeth that engage a spring-loaded arm to secure the rod in an extended position. A compression or tension spring may bias the concentric barrel sections in an extended or shortened configuration.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: November 19, 2013
    Assignee: TTSG Associates
    Inventor: S. Mill Calvert
  • Patent number: 8458945
    Abstract: A shotgun choke system consisting of four zones, a the first zone being a compression or constriction zone; the second zone being a stabilization zone; the third zone being a second compression or constriction zone; and the forth and final zone being a second stabilization zone. The shot package is compressed and constricted into a tight, uniform shot delivery package, and the wad package is completely separated from the shot package. The shot package therefore leaves the barrel of the choke, first, while gasses from the shot escape through a muzzle break and the wad package exits following the shot package, drastically reducing recoil and improving the shot pattern over prior art choke embodiments.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: June 11, 2013
    Inventor: Jimmy Washam, Jr.
  • Patent number: 8276305
    Abstract: The invention relates to systems, methods and devices for controlling the dispersion of shot or other projectiles fired from a weapon such as a shotgun. Embodiments according to the invention employ an inner cylindrical chamber that is divided at a median transverse plane into forward and rear sections. The rear section of the chamber tapers toward the median transverse plane and includes a number of radial vents that open into an outer chamber that provides one or more gas bypass channels into the forward section of the tubular chamber. Alternatively, channels function as unitary vents and outer chamber to provide for a gas bypass. The forward section tapers toward a forward muzzle opening. When a multiple projectile load/wad is fired from the weapon, expanding gas is sealed behind the load until it has advanced past the radial vents at which point, gas is allowed to expand into the outer chamber resulting in a momentary pressure drop and reduced propulsion force behind the wad/load.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: October 2, 2012
    Inventors: Larry Leutenegger, Gerald E. Poe
  • Publication number: 20120240443
    Abstract: A shotgun choke system consisting of four zones, a the first zone being a compression or constriction zone; the second zone being a stabilization zone; the third zone being a second compression or constriction zone; and the forth and final zone being a second stabilization zone. The shot package is compressed and constricted into a tight, uniform shot delivery package, and the wad package is completely separated from the shot package. The shot package therefore leaves the barrel of the choke, first, while gasses from the shot escape through a muzzle break and the wad package exits following the shot package, drastically reducing recoil and improving the shot pattern over prior art choke embodiments.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 27, 2012
    Inventor: JIMMY WASHAM, JR.
  • Patent number: 8250962
    Abstract: A bullet velocity enhancing rifle attachment assembly a sleeve having a first end, a second end and a perimeter wall. The sleeve has an aperture therein extending into the first end and outwardly of the second end. The aperture is defined by an inner wall including a first portion adjacent to the first end, an second portion adjacent to the second end and a central portion positioned between the first and second portions. The central portion has an toroidal shape. A coupler attached to the second end of the sleeve is releasably engageable with a gun barrel to align the aperture with the gun barrel. Pressure from a front side of a bullet traveling down the gun barrel is forced into the central portion to travel around the toroidal shape and back into the aperture toward the first portion, behind the bullet, as the bullet travels through the central portion.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: August 28, 2012
    Inventors: Isaac Guenther, Tina Guenther
  • Patent number: 8186091
    Abstract: Exchangeable choke for a fire arm with a smooth gun barrel, whereby said choke is provided with mechanical coupling means to mount and dismount the choke, characterized in that the choke is equipped with additional sealing means so as to seal the choke, at least in one place, in relation to the gun barrel, as well as to prevent the choke from being unscrewed during the shooting.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: May 29, 2012
    Assignee: Browning International, Societe Anonyme
    Inventors: Joseph Mardaga, Thierry Dumortier
  • Patent number: 8186261
    Abstract: An adjustable muzzle brake in which an interior volume of the muzzle chamber can be varied without the use of tools which allows shooters to adjust the flow of the propellant gases and thereby allow shooters to determine and select the optimum recoil for their shooting preference.
    Type: Grant
    Filed: April 17, 2010
    Date of Patent: May 29, 2012
    Inventors: Robert McNeill, Russell Kath
  • Patent number: 8112931
    Abstract: A shotgun gas exchanger comprising a gas exchanger tube for connectively engaging with a shotgun barrel and a choke disposed in the gas exchanger having longitudinal axial channels on the exterior surface thereof, such that gas from the shotgun barrel flows through the longitudinal axial channels and gathers in front of the muzzle end of the choke to retard the release of pellets from a wadding cup exiting the muzzle.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: February 14, 2012
    Inventors: Bill R. Yost, Gregory S. Marcum
  • Publication number: 20120023799
    Abstract: A shotgun barrel of a construction that reduces recoil is provided. The shotgun barrel includes a smooth, non-rifled bore and a choke approximate the muzzle of the barrel. A plurality of vent holes through the barrel and extending into the bore in equal number and in alignment on opposing sides of the barrel along a length of the barrel that is inward of the choke, the sum of the transverse area of each of the plurality of vent holes not exceeding 50% of the muzzle area. A shotgun including the barrel of reduced recoil is also provided.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 2, 2012
    Inventor: JOHN PALMER
  • Patent number: 8104394
    Abstract: Flash suppressors having novel expansion features are disclosed. In one embodiment, a suppressor includes an attachment portion adapted to attach to a gun barrel, and a suppressor portion coupled to the attachment portion. The suppressor portion has a suppressor bore that is adapted to be aligned with a longitudinal axis of the gun barrel to allow a projectile from the gun barrel to pass therethrough. The suppressor bore is defined by at least one bore surface having at least one expansion groove disposed therein. The expansion groove may be partially-circumferentially disposed about the suppressor bore, or may include a plurality of expansion grooves. In another embodiment, a flash apparatus includes a suppressor portion having a plurality of longitudinally elongated members spaced apart about a circumference of the suppressor bore, each member being separated from adjacent elongated members by a longitudinal slot, at least one longitudinal slot having non-parallel sidewalls.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: January 31, 2012
    Assignee: B. E. Meyers
    Inventor: Brad E. Meyers
  • Publication number: 20120011757
    Abstract: A shotgun gas exchanger comprising a gas exchanger tube for connectively engaging with a shotgun barrel and a choke disposed in the gas exchanger having longitudinal axial channels on the exterior surface thereof, such that gas from the shotgun barrel flows through the longitudinal axial channels and gathers in front of the muzzle end of the choke to retard the release of pellets from a wadding cup exiting the muzzle.
    Type: Application
    Filed: April 14, 2009
    Publication date: January 19, 2012
    Inventors: Bill R. Yost, Gregory S. Marcum
  • Patent number: 8096222
    Abstract: The present invention relates to a silencer for reducing muzzle blast and noise of firearms or similar devices. The present silencer has a hollow cylindrical or other shape casing comprising front and rear end caps and an opening aligned along a longitudinal axis defining a passage for a projectile and propellant gases to emerge from the muzzle opening. A plurality of serially placed baffles of symmetrical or slanted orientation and intervening coaxial spacers are positioned within the casing and define a multitude of chambers among the baffles, spacers, and outer housing. The baffles shear propellant gases away from the projectile path and through openings or ports into additional chambers formed between the spacers and outer housing. The arrangement of baffles and spacers provides flow-impeding paths, dispersion, and controlled expansion of gases and lowers gas temperature to reduce audible noise and observable signature of the muzzle blast.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: January 17, 2012
    Assignee: Advanced Armament Corp., LLC.
    Inventor: Robert Silvers
  • Publication number: 20110289814
    Abstract: A choke to be used with a muzzle of a gun may include a housing which may include an inner surface and an outer surface, and the housing may include a substantially central bore. The inner surface may inwardly taper at the distal end of the choke, and the inner surface may include a first depression having a first dimension. The inner surface may include a second depression having a second dimension, and the inner surface may include a third depression having a third dimension. The inner surface may include a fourth depression having a fourth dimension, and the first dimension may be substantially equal to the third dimension. The second dimension may be substantially equal to the fourth dimension.
    Type: Application
    Filed: February 25, 2009
    Publication date: December 1, 2011
    Inventor: Douglas Ashby
  • Patent number: 8042448
    Abstract: A muzzle device configured to be attached to the muzzle region of a barrel. The muzzle device has a compensator region positioned longitudinally rearward from a flash suppression region. The muzzle device further is provided with adjacent compensator ports in communication by a longitudinally extending access vent.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: October 25, 2011
    Assignee: Primary Weapons
    Inventors: Dean Sylvester, Todd Tuttle
  • Publication number: 20110119983
    Abstract: This invention is in relation to a shotgun choke tube made of Aluminum in which sometimes this Aluminum choke tube may be coated with an anodize or hard coat of some sort to increase hardness, strength and lubricity. It is composed of a cylindrical tube having a sealing face, multiple clearance diameters, a body, outside diameter threads and on extended type choke tubes, a head diameter which extends outward lengthwise to extend beyond the muzzle face of the barrel of the shotgun. The inside diameters are comprised of different surface finishes, tapers, straights and geometries. The aluminum choke tube is held in place inside the muzzle end of a shotgun barrel by the threads and sealing face which depending on the shotgun manufacturer is machined to fit that specific shotgun barrel.
    Type: Application
    Filed: November 25, 2009
    Publication date: May 26, 2011
    Inventor: James Richard Muller
  • Publication number: 20110067284
    Abstract: A choke for use with a shotgun is provided. In accordance with one embodiment the choke has a body that defines a bore with a longitudinal axis therethrough. The body is configured for engagement with a shotgun, and the bore is positioned for traversal of a wad and shot therethrough and out of an end of the bore. The body has a circumference, an inner surface, and outer surface. The body defines at least one port for venting gas from the bore that extends from the inner surface to the outer surface. The shape of the port at the inner surface is asymmetrical.
    Type: Application
    Filed: January 11, 2008
    Publication date: March 24, 2011
    Inventor: Mark L. Andry
  • Patent number: 7895787
    Abstract: A choke for use with a shotgun is provided. In accordance with one embodiment the choke has a body that defines a bore with a longitudinal axis therethrough. The body is configured for engagement with a shotgun, and the bore is positioned for traversal of a wad and shot therethrough and out of an end of the bore. The body has a circumference, an inner surface, and outer surface. The body defines at least one port for venting gas from the bore that extends from the inner surface to the outer surface. The shape of the port at the inner surface is asymmetrical.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: March 1, 2011
    Inventor: Mark L. Andry
  • Patent number: 7874238
    Abstract: The present invention relates to a silencer for reducing muzzle blast and noise of firearms or similar devices. The present silencer has a hollow cylindrical or other shape casing comprising front and rear end caps and an opening aligned along a longitudinal axis defining a passage for a projectile and propellant gases to emerge from the muzzle opening. A plurality of serially placed baffles of symmetrical or slanted orientation and intervening coaxial spacers are positioned within the casing and define a multitude of chambers among the baffles, spacers, and outer housing. The baffles shear propellant gases away from the projectile path and through openings or ports into additional chambers formed between the spacers and outer housing. The arrangement of baffles and spacers provides flow-impeding paths, dispersion, and controlled expansion of gases and lowers gas temperature to reduce audible noise and observable signature of the muzzle blast.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: January 25, 2011
    Assignee: Advanced Armament Corp., LLC
    Inventor: Robert Silvers
  • Publication number: 20100275492
    Abstract: An apparatus for use with a shotgun that includes an assembly having an interchangeable choke and compensator, and a lock nut for securing the compensator in a selected alignment with the choke. The current invention allows for shotguns, chokes, and compensators to be used interchangeably while still maintaining the correct positioning of each part relative to the others.
    Type: Application
    Filed: November 3, 2008
    Publication date: November 4, 2010
    Inventors: Cliff Moller, Claudio Salassa, Julio Schmidt
  • Publication number: 20100050493
    Abstract: Exchangeable choke for a fire arm with a smooth gun barrel, whereby said choke is provided with mechanical coupling means to mount and dismount the choke, characterized in that the choke is equipped with additional sealing means so as to seal the choke, at least in one place, in relation to the gun barrel, as well as to prevent the choke from being unscrewed during the shooting.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 4, 2010
    Inventors: Mardaga Joseph, Dumortier Thierry
  • Patent number: 7661349
    Abstract: An apparatus and method for easily, quickly and reliably attaching a noise suppressor or other auxiliary device to the muzzle end of a firearm barrel and for easily, quickly and reliably removing the noise suppressor or other auxiliary device there from. My invention also provides for adjusting the host firearms point of impact by changing the orientation of the noise suppressor in relation to the host firearms bore.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: February 16, 2010
    Assignee: Advanced Armament Corp., LLC
    Inventor: Kevin Tyson Brittingham
  • Patent number: 7658186
    Abstract: A multi-purposes mechanism for shooting apparatus includes a gun body, a barrel, a shooting member, and a rear cap. The gun body comprises a hollow tube perpendicularly interconnecting with a first loading hole at a center portion of the hollow tube. A first stage is formed on an inner wall of the tube in front of the first loading hole. A second stage is formed on the inner wall of the tube in back of the first loading hole. The barrel is disposed in the tube before the first loading hole, and has a first engaging ring corresponding to the first stage of the tube. The shooting member is disposed in the tube after the first loading hole, and has a second engaging ring on an outer wall thereof corresponding to the second stage of the tube. The rear cap is connected to a rear end of the tube.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: February 9, 2010
    Assignee: Sunworld Industrial Co., Ltd.
    Inventor: Hsin-Cheng Yeh
  • Patent number: 7587969
    Abstract: The present invention relates to a silencer for reducing muzzle blast and noise of firearms or similar devices. The present silencer has a hollow cylindrical or other shape casing comprising front and rear end caps and an opening aligned along a longitudinal axis defining a passage for a projectile and propellant gases to emerge from the muzzle opening. A plurality of serially placed baffles of symmetrical or slanted orientation and intervening coaxial spacers are positioned within the casing and define a multitude of chambers among the baffles, spacers, and outer housing. The baffles shear propellant gases away from the projectile path and through openings or ports into additional chambers formed between the spacers and outer housing. The arrangement of baffles and spacers provides flow-impeding paths, dispersion, and controlled expansion of gases and lowers gas temperature to reduce audible noise and observable signature of the muzzle blast.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: September 15, 2009
    Inventor: Robert Silvers
  • Patent number: 7523581
    Abstract: The invention relates to systems, methods and devices for controlling the dispersion of shot or other projectiles fired from a weapon such as a shotgun. Embodiments according to the invention employ an inner cylindrical chamber that is divided at a median transverse plane into forward and rear sections. The rear section of the chamber tapers toward the median transverse plane and includes a number of radial vents that open into an outer chamber that provides one or more gas bypass channels into the forward section of the tubular chamber. The forward section tapers toward a forward muzzle opening. When a multiple projectile load/wad is fired from the weapon, expanding gas is sealed behind the load until it has advanced past the radial vents at which point, gas is allowed to expand into the outer chamber resulting in a momentary pressure drop and reduced propulsion force behind the wad/load.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: April 28, 2009
    Inventors: Larry Leutenegger, Gerald E. Poe
  • Publication number: 20080173166
    Abstract: A choke for use with a shotgun is provided. The choke includes a body that defines a bore with a longitudinal axis. The body is configured for engagement with a shotgun so that projectiles from the shotgun can traverse therethrough and out of an end of the bore. The body has a circumference and defines at least one port for venting gas from the bore through the circumference. The port is located within a first radial arc that extends 180° about the longitudinal axis. No ports are present for venting gas from the bore through the circumference that are located within a second radial arc that does not overlap the first radial arc and that extends 180° about the longitudinal axis. An associated method is also provided.
    Type: Application
    Filed: January 23, 2007
    Publication date: July 24, 2008
    Inventor: Mark L. Andry
  • Patent number: 7302774
    Abstract: Flash suppressors having novel expansion features are disclosed. In one embodiment, a suppressor apparatus includes an attachment portion adapted to attach to a gun barrel, and a suppressor portion coupled to the attachment portion. The suppressor portion has a suppressor bore therethrough that is adapted to be aligned with a longitudinal axis of the gun barrel to allow a projectile from the gun barrel to pass therethrough. The suppressor bore is defined by at least one bore surface having at least one expansion groove disposed therein. The expansion groove may be partially-circumferentially disposed about the suppressor bore, or may include a plurality of expansion grooves. In another embodiment, a flash apparatus includes a suppressor portion having a plurality of longitudinally elongated members spaced apart about a circumference of the suppressor bore, each elongated member being separated from adjacent elongated members by a longitudinal slot, at least one longitudinal slot having non-parallel sidewalls.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: December 4, 2007
    Inventor: Brad E. Meyers
  • Patent number: 7140140
    Abstract: Different colors are prepared for inner shapes that define different design ballistic patterns. Wear resistant coatings of the different colors are applied over outer surfaces of tube bodies having the design ballistic patterns corresponding to the colors of the wear resistant coatings to allow the design ballistic patterns to be identified by the colors of the wear resistant coatings.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: November 28, 2006
    Assignee: Tohoseiki Co., Inc.
    Inventor: Ryosuke Yoshitaka
  • Patent number: 6990764
    Abstract: A tube and ring assembly is provided for use with a shotgun barrel including a cylindrical tube, which may be a conventional choke tube or a carrier platform, with a first externally threaded portion at one end for threadingly engaging an internal thread in the shotgun barrel. A second externally threaded portion is provided on the tube which will remain exposed beyond the muzzle end of the shotgun barrel when the tube is fully threaded into engagement with the shotgun barrel. An internally threaded ring is also provided which is sized to be threadingly carried on an outside of the tube and to engage the second externally threaded portion of the tube such that the ring can be threaded onto the tube until it abuttingly engages the muzzle end of the shotgun barrel.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: January 31, 2006
    Assignee: Inpromarketing Corp.
    Inventor: Ronald N. Walker
  • Patent number: 6789343
    Abstract: An automatic choke system for automatically adjusting the amount of choke applied to a series of shots discharged from shotgun. The automatic choke system includes a tube assembly with a plurality of longitudinal slits within the distal end thereof, a collar unit attached about the tube assembly, and a swedge assembly slidably positioned between the tube assembly and the collar unit. A latch unit attached to the collar unit selectively allows the swedge assembly to move forwardly one position after each shot fired. The latch unit is operated by gas flow from the interior of the barrel of the shotgun during a shot.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: September 14, 2004
    Inventors: James P. Dietrich, Donald R. Hall
  • Patent number: 6782651
    Abstract: A breaching tool assembly is provided for use with a shotgun barrel including a cylindrical carrier tube with a first externally threaded portion at one end for threadingly engaging an internal thread in the shotgun barrel. A second externally threaded portion is provided on the carrier tube which will remain exposed beyond the muzzle end of the shotgun barrel when the carrier tube is fully threaded into engagement with the shotgun barrel. An internally threaded stand-off tube is also provided which is sized to be threadingly carried on an outside of the carrier tube and to engage the second externally threaded portion of the carrier tube such that the stand-off tube can be threaded onto the carrier tube until the stand-off tube abuttingly engages the muzzle end of the shotgun barrel.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: August 31, 2004
    Assignee: Inpromarketing Corp.
    Inventors: Ronald N. Walker, Douglas L. Burche
  • Publication number: 20040154209
    Abstract: A tube and ring assembly is provided for use with a shotgun barrel including a cylindrical tube, which may be a conventional choke tube or a carrier platform, with a first externally threaded portion at one end for threadingly engaging an internal thread in the shotgun barrel. A second externally threaded portion is provided on the tube which will remain exposed beyond the muzzle end of the shotgun barrel when the tube is fully threaded into engagement with the shotgun barrel. An internally threaded ring is also provided which is sized to be threadingly carried on an outside of the tube and to engage the second externally threaded portion of the tube such that the ring can be threaded onto the tube until it abuttingly engages the muzzle end of the shotgun barrel.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventor: Ronald N. Walker
  • Publication number: 20040154208
    Abstract: A breeching tool assembly is provided for use with a shotgun barrel including a cylindrical carrier tube with a first externally threaded portion at one end for threadingly engaging an internal thread in the shotgun barrel. A second externally threaded portion is provided on the carrier tube which will remain exposed beyond the muzzle end of the shotgun barrel when the carrier tube is fully threaded into engagement with the shotgun barrel. An internally threaded stand-off tube is also provided which is sized to be threadingly carried on an outside of the carrier tube and to engage the second externally threaded portion of the carrier tube such that the stand-off tube can be threaded onto the carrier tube until the stand-off tube abuttingly engages the muzzle end of the shotgun barrel.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventors: Ronald N. Walker, Douglas L. Burche
  • Publication number: 20030182838
    Abstract: A barrel with an adjustable bore diameter for use with a paint ball gun allowing the gun to fire paint ball pellets of different sizes. The barrel need not be removed from the gun in order to adjust the bore diameter, but rather an outer sleeve of the barrel is rotated to facilitate the change in the bore diameter. In one embodiment, the barrel includes an inner-bore sleeve, a barrel body having openings and force elements received in the openings. The barrel body and force elements are located between the inner-bore sleeve and outer sleeve. One embodiment includes recesses on an inner surface of the outer sleeve to rotationally index the force elements in the outer sleeve.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 2, 2003
    Inventor: Eric H. Kessler
  • Patent number: 6609324
    Abstract: An adjustable shotgun choke device for allowing the user to change the choke constrictions without unscrewing one choke and screwing another choke into the barrel of the shotgun. The adjustable shotgun choke device includes a tubular member having open ends and a bore extending therethrough with the tubular member being adapted to be threaded in a barrel of a shotgun; and also includes a sleeve member having a first end, a second end, and a bore extending therethrough with the sleeve member being removably attached to the tubular member.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: August 26, 2003
    Inventor: Henry J. Truitt, Jr.
  • Patent number: 6557290
    Abstract: The present invention is a light weight low profile variable shotgun bore choke that is easily manually adjusted by the user. To minimize the choke profile, the choke is connected to the shotgun through a threaded connection within the muzzle bore. External threads on a choke inner sleeve are configured to mate with standard threads found in existing prior shotgun barrel muzzles or with custom threads specifically formed. By using a threaded connection internal to the gun barrel, the overall radial dimensions of the choke are minimized thereby reducing the profile visible to the user. Weight is also reduced by a design which reduces radial dimensions and by use of light weight materials. The choke is adjusted by the user by manually rotating an outer adjustment sleeve with respect to an inner bore sleeve which is fixed to the shotgun barrel. The adjustment sleeve rotates through a range of choke conditions between two physical stops.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: May 6, 2003
    Inventor: Daniel F. Kumler
  • Publication number: 20020184810
    Abstract: A video scope assembly (10) for mounting on a firearm (F) for imaging, displaying, and recording a user's view when the user is aiming and/or shooting the firearm at a target in a line of sight is disclosed. The video scope assembly (10) includes a housing (12) mounted on firearm (F), and housing a lens assembly (14), a display (16), and a recorder (18). The lens assembly (14) includes at least one lens operable to capture an image of the area surrounding and including the line of sight. The display (16) communicates with the lens assembly (14) and is operable to display the image captured thereby. The recorder (18) communicates with the lens assembly (14) and is operable to record the image captured thereby.
    Type: Application
    Filed: June 6, 2001
    Publication date: December 12, 2002
    Inventor: Frederick A. Day