Buffers And Brakes Patents (Class 89/198)
  • Patent number: 10948254
    Abstract: The installation space dimensions of a weapon system in the tower are complied with, and a loading space diameter of a caliber-larger weapon barrel is approximately maintained in relation to the smaller caliber. The required larger loading space volume for the caliber increase is predominantly achieved by an extension of the loading space of the caliber-larger weapon barrel relative to a loading space of the caliber-smaller weapon barrel itself. Since the loading space diameter of a larger caliber remains virtually unchanged, the outer dimensions of the caliber-larger weapon barrel also remain virtually unchanged compared to the outer dimensions of the caliber-smaller weapon barrel in the region of the loading part.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: March 16, 2021
    Assignee: Rheinmetall Waffe Munition GmbH
    Inventors: Berthold Baumann, Andreas Blache, Stefan Radczinsky, Heiner Schmees, Florian Schwieger
  • Patent number: 10852083
    Abstract: A buffer extension assembly may include a body having at least one face and a cylindrical surface. The body may be disposed between and contact at least one of a buffer and a bolt carrier group such that the body increases both the effective mass and the effective length of the buffer. The body includes at least one hole extending along a length of the body.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: December 1, 2020
    Inventors: James Matthew Underwood, Larry Cullen Underwood
  • Patent number: 10788282
    Abstract: The installation space dimensions of a weapon system in the tower are complied with, and a loading space diameter of a caliber-larger weapon barrel is approximately maintained in relation to the smaller caliber. The required larger loading space volume for the caliber increase is predominantly achieved by an extension of the loading space of the caliber-larger weapon barrel relative to a loading space of the caliber-smaller weapon barrel itself. Since the loading space diameter of a larger caliber remains virtually unchanged, the outer dimensions of the caliber-larger weapon barrel also remain virtually unchanged compared to the outer dimensions of the caliber-smaller weapon barrel in the region of the loading part.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: September 29, 2020
    Assignee: RHEINMETALL WAFFE MUNITION GMBH
    Inventors: Berthold Baumann, Andreas Blache, Stefan Radczinsky, Heiner Schmees, Florian Schwieger
  • Patent number: 10775121
    Abstract: In some embodiments, a firearm comprises a lower receiver, a bolt carrier, a buffer sleeve and a buffer. The lower receiver is arranged to support a hammer and an auto-sear. The bolt carrier comprises a body and a striker moveable with respect to the body between a first position and a second position. The buffer sleeve is arranged to contact the bolt carrier and to contact a buffer spring. The buffer sleeve defines an internal cavity and comprises open ends. The buffer is oriented in the internal cavity and extends through the buffer sleeve. The buffer is arranged to contact the striker and move the striker to the second position.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: September 15, 2020
    Assignee: In Ovation LLC
    Inventor: Terrence Dwight Bender
  • Patent number: 10712108
    Abstract: A buffer assembly to reduce recoil in a firearm includes a main body that is hollow from an opening extending from the end of the main body to about a shoulder that engages a recoil spring. An end cap is insertable into the opening and has a central hole, with a first larger diameter through a first portion and a second smaller diameter through a second portion. An operational rod has a first portion with a larger diameter and a second portion with a smaller diameter, sized to slidingly fit in the second smaller diameter hole of the end cap. The first portion's diameter is larger than the second smaller diameter of the end cap, providing a stop for the operational rod such that the operational rod cannot slide out of the end cap, and the second portion extends out from the end cap and terminates in a bumper.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: July 14, 2020
    Inventor: Andrew David Cozad
  • Patent number: 10704854
    Abstract: In some embodiments, a firearm mechanism comprises a bolt carrier comprising a bolt carrier cavity, a buffer comprising a buffer cavity and a weight arranged to travel between the bolt carrier cavity and the buffer cavity. The buffer cavity comprises a damping mechanism comprising a reduction in a cross-sectional size of the buffer cavity. In some embodiments, the damping mechanism and weight comprise a valve arrangement arranged to pressurize the buffer cavity and damp kinetic energy carried by the weight.
    Type: Grant
    Filed: January 26, 2019
    Date of Patent: July 7, 2020
    Assignee: In Ovation LLC
    Inventor: Terrence Dwight Bender
  • Patent number: 10634441
    Abstract: The present disclosure presents a barrel assembly for a firearm. The barrel assembly includes a barrel having an internal bore and an external surface, and a recoil spring lug affixed to an outside surface of the barrel. The barrel assembly also includes a slide moveably mounted relative to the barrel, and a recoil spring biased on the recoil spring lug and the slide.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: April 28, 2020
    Assignee: American Classic Arms, LLC
    Inventors: David Theodore Fumia, Ronald Herman Kohlstaedt
  • Patent number: 10619955
    Abstract: A spring system for blowback action is provided with a control piece (2) and pusher piece (3) supported so that it can be displaced on the guide rod (7). On its end, a buffer (4) is arranged with a buffer spring (6). The guide rod (7) is also used for guiding the closing spring (8). Between the control piece (2) and pusher piece (3) there are five rollers (10) in a recess (9) of the guide rod (7), and these rollers cause a delay of the action during the blowback after the discharge of a shot.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: April 14, 2020
    Assignee: Wyssen Defence AG
    Inventor: Juerg Wyssen
  • Patent number: 10352636
    Abstract: In various embodiments, a buffer retention system may comprise a body, a retention tab and a spring. The body may comprise a generally cylindrical portion and a partially annular guide portion. The generally cylindrical portion may define a channel. The partially annular guide portion may be operatively coupled to the cylindrical portion. The retention tab may be installable in the channel. The retention tab may be configured to protrude through the partially annular guide portion. The spring may be installable within the channel. The spring may be configured to position the retention tab through the partially annular guide portion.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: July 16, 2019
    Assignee: PATRIOT ORDNANCE FACTORY, INC.
    Inventor: Frank L. DeSomma
  • Patent number: 10184739
    Abstract: A firearm bolt assembly for a self-loading firearm has an elongated frame defining a frame axis, a bolt connected to a forward end of the frame, a plurality of separate weights connected to the frame, and the weights being movable at least slightly with respect to the frame and to each other for movement along the axis. There may be a resilient spacer element between adjacent weights. There may be a resilient spacer element between one of the weights and a portion of the frame. The spacer element may be an O-ring. The weights may be connected to a rear portion of the frame. The weights may be tubular bodies each defining a bore. A portion of the frame may be received within the bore. The frame may define a rear portion having a first diameter, and a flange forward of the rear portion having a larger second diameter.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: January 22, 2019
    Assignee: J & K IP ASSETS, LLC
    Inventor: John Paul Gangl
  • Patent number: 10054378
    Abstract: A black rifle including a receiver with a bolt carrier movably located therein, a receiver extension tube connected to the receiver, the receiver extension tube including an aperture disposed at an end of the receiver extension tube, and a buffer assembly having an interface surface configured to interface with bolt carrier and being configured to reciprocate through the aperture within the receiver extension tube, the buffer assembly including an open fluid passage, through the buffer assembly, that is sized and shaped for enabling movement of the bolt carrier relative to the receiver and effect automatic or semi-automatic fire when the receiver extension is at least partially filled with water.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: August 21, 2018
    Assignee: TCC Solutions
    Inventor: Casimir Pawlowski
  • Patent number: 9995553
    Abstract: An adjustable buffer optionally including at least some of a buffer element having an elongate buffer element body portion, wherein the buffer element body portion includes an externally threaded portion; a collar nut having a collar nut aperture formed therethrough, wherein at least a portion of the collar nut aperture is internally threaded so as to interact with the externally threaded portion of the buffer element body portion, and wherein one or more collar nut recesses are formed in the collar nut; and a locking collar having a locking collar aperture formed therethrough, wherein the locking collar aperture is formed so as to accept at least a portion of the buffer element body portion therethrough, wherein the locking collar includes one or more locking collar protrusions, and wherein the one or more locking collar protrusions are mateable with the one or more collar nut recesses.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: June 12, 2018
    Inventor: Paul A. Oglesby
  • Patent number: 9970722
    Abstract: A recoil buffer system having a buffer element, wherein the buffer element extends from a first buffer element end to a second buffer element end; a shoulder extending from a portion of the buffer element; a spacer, wherein the spacer extends from a first spacer end to a second spacer end, wherein the spacer is slidable along at least a portion of the buffer element; a first recoil spring, wherein the first recoil spring extends from a first end of the first recoil spring to a second end of the first recoil spring; and a second recoil spring, wherein the second recoil spring is positioned between the shoulder and the first spacer end of the spacer, and wherein the first recoil spring is positioned such that a first end of the first recoil spring is abutted against and extends from the second spacer end of the spacer.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: May 15, 2018
    Assignee: Battle Arms Development, Inc.
    Inventor: Matthew Babb
  • Patent number: 9625232
    Abstract: A buttstock assembly configured to work in conjunction with a compact buffer assembly consisting of a buffer tube, spring and bolt carrier with an integral buffer is provided. The buttstock assembly, buffer tube and bolt carrier are configured to work with AR15/M16 type firearms and their derivatives. By incorporating the buffer onto the bolt carrier, which is used in conjunction with a buffer tube of reduced length, the overall length of the host firearm is reduced by approximately 3.2 inches. No permanent modification need be made to the host firearm in order to utilize the compact buffer assembly and buttstock assembly disclosed herein.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: April 18, 2017
    Assignee: LWRC International LLC
    Inventor: Jesus S. Gomez
  • Patent number: 9404718
    Abstract: A method and apparatus for firing a plurality of disrupter loads in arbitrary order at the discretion of the user is disclosed. The loads may be of the same or different types. Both liquid and solid projectiles may be fired. Further, the disrupter may be operated by a user at safe standoff distance from a robotic mount with the aid of control, targeting, ranging and recoil systems.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: August 2, 2016
    Assignee: Vadum Inc.
    Inventors: Jesse Hart Shaver, Aaron Lael Walker, Michael Joseph Trapani, Jennings Gary Edge, Todd Nichols
  • Patent number: 9291414
    Abstract: A buttstock assembly configured to work in conjunction with a compact buffer assembly consisting of a buffer tube, spring and bolt carrier with an integral buffer is provided. The buttstock assembly, buffer tube and bolt carrier are configured to work with AR15/M16 type firearms and their derivatives. By incorporating the buffer onto the bolt carrier, which is used in conjunction with a buffer tube of reduced length, the overall length of the host firearm is reduced by approximately 3.2 inches. No permanent modification need be made to the host firearm in order to utilize the compact buffer assembly and buttstock assembly disclosed herein.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: March 22, 2016
    Assignee: LWRC International LLC
    Inventor: Jesus S. Gomez
  • Patent number: 9267747
    Abstract: Systems, mechanisms and methods are disclosed herein for absorbing recoil within a firearm. A first recoil absorption mechanism and second recoil absorption mechanism may be moved relative to each other in response to one or more recoil forces. At a certain point, the second recoil absorption mechanism moves toward and collides with the first recoil absorption mechanism. These forces, which are in part translated to the springs, reduce the amount of recoil experienced by the user of the firearm.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: February 23, 2016
    Inventor: Carl Eugene Caudle
  • Patent number: 9194650
    Abstract: Disclosed is a firearm configuration for a handgun. The firearm configuration is designed to reduce the recoil forces encountered by a user upon firing the weapon. Recoil forces are reduced by lowering the firearm's center of mass and by aligning a recoiling mass with the user's arm and trigger finger. The various detail of the present disclosure, and the manner in which they interrelate, will be described in greater detail hereinafter.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: November 24, 2015
    Inventor: William A. Hangen
  • Patent number: 9038525
    Abstract: A firearm can have a bolt having a plurality of locking lugs that are configured to have a shear area that is at least approximately 1.3 times that of a standard M16/M4. A piston can be formed on the bolt and can have a plurality of rings that are configured to cooperate with the piston to mitigate gas leakage past the piston. Each of the rings can have a key formed thereon and a gap formed therein such that the gap of one ring is configured to receive at least a portion of the key of another ring. The bolt carrier can have a double cut cam.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: May 26, 2015
    Assignee: ArmWest, LLC
    Inventors: Leroy James Sullivan, James McGarry, Robert L. Waterfield, Paul N. Latulippe, Jr.
  • Patent number: 8955422
    Abstract: A modified bolt carrier for automatic recoil rifles and pistols preferably includes a shortened bolt carrier, a shortened buffer tube, a modified bolt key and an end cap. The shortened buffer tube is shortened by cutting-off a straight portion of a prior buffer tube. The modified bolt key includes a prior art bolt key, a rod yoke, a pair spring rods, a pair of compression springs, a spring support disc and a spring plug. The spring plug is biased outward from the shortened bolt carrier with the pair of compression springs. The modified bolt key is attached to the shortened bolt carrier and retained in upper and lower receivers of an automatic recoil rifle or pistol. The bolt spring is slipped over the spring plug and the bolt spring is retained by securing the end cap to the lower receiver with a lock pin.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: February 17, 2015
    Inventor: Theodore R. Schumacher
  • Publication number: 20140373708
    Abstract: A vibration-dampening polymeric sleeve is provided for installation within the tubular receiver extension of an AR-10 derivative assault rifle before the action spring and buffer are installed therein. The presence of the sleeve dampens noise and vibration caused by the action spring of an AR-10 derivative assault rifle slapping against the cylindrical wall of the receiver extension. For one embodiment of the sleeve, a generally rectangular sheet of laminar polymeric plastic material equipped with tabs at the rear thereof, that is rolled into a tube. The tabs, which are inwardly bent, are held against the closed, rear end of the receiver extension by the action spring, whether the spring is fully compressed or only partially compressed. For an alternative embodiment, the sleeve, a solvated liquid polymer compound is sprayed into the cylindrical chamber of an axially-rotating receiver extension and allowed to dry.
    Type: Application
    Filed: February 3, 2014
    Publication date: December 25, 2014
    Inventors: Thomas Lee Wood, William Jeremy Wood
  • Patent number: 8899142
    Abstract: A convertible gas piston conversion system for the AR-15, AR-10, or their variant rifle platforms is provided to convert the platform from a direct impingement gas system to a piston driven operating system. The conversion system includes a gas block having a barrel bore and two piston cylinder bores one on either side of the gas block. One of the piston cylinder bores is for utilization of the AR-15 rifle and the other of the piston cylinder bores is for utilization of the AR-10 rifle, making this piston system convertible for either the AR-15, AR-10, or any of their variant rifle platforms. A piston cylinder is inserted into the gas block via the piston cylinder bore and a piston is actuated inside the piston cylinder to cycle the rifle. A connecting link is coupled between the piston and an op-rod making the gas systems length adjustable by simply replacing the connecting link.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: December 2, 2014
    Inventor: Charles B. Cassels
  • Patent number: 8887617
    Abstract: In a recoil-spring device (100) in a handgun equipped with a breech and a recoil spring (110) in the form of a spiral spring, whose rear end abuts a rear stop member (123) on a recoil spring rod (120) and whose front end is mounted for movement along the recoil-spring rod (120) with contraction of the recoil spring (110), support in an uncomplicated recoil-spring eyelet is achieved in that the front end of the recoil spring (110) abuts, at least indirectly, a rear contact surface (132) of a contact element (131) that is mounted for movement along said contact-spring rod (120), while the front contact surface (133) is in contact with an internal surface of the breech of the handgun.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: November 18, 2014
    Assignee: Carl Walther GmbH
    Inventors: Wulf-Heinz Pflaumer, Franz Wonisch, Enrico Rau
  • Patent number: 8800424
    Abstract: A captured spring assembly for a firearm has a rod having a forward and rearward ends, a movable buffer that defines an aperture that receives the forward end of the rod and is operable to reciprocate between a forward battery position and a rearward retracted position, a coil spring that encompasses the rod, wherein the forward end of the rod has a limit element having a head that is larger in diameter than the rod, wherein the buffer has an internal limit element that is larger in diameter than the rod, and wherein the internal limit element has at least one portion that is smaller in diameter than the limit element head, but also larger in diameter than the rod. There may be a spring stop attached to the rearward end of the rod that is large enough for the spring to bear against and the buffer to strike against.
    Type: Grant
    Filed: June 2, 2012
    Date of Patent: August 12, 2014
    Assignee: J & K IP Assets, LLC
    Inventors: John P. Gangl, Dave A. Adolfson
  • Patent number: 8752474
    Abstract: A firearm such as a pistol includes a barrel which rotates and travels linearly relative to a frame of the pistol and a slide which travels linearly relative to the barrel and frame. The barrel has at least one stop located at a muzzle end for engaging at least one stop on the slide when the barrel is in a first rotational position to prevent linear movement of the slide relative to the barrel, which stops permit the slide and said barrel to move linearly relative to one another when the barrel is in a second rotational position. Another aspect of the invention comprises a control surface which is located on a barrel of a firearm. Yet another aspect of the invention comprises such features associated with a rotating, rather than tipping, firearm barrel. Yet another aspect of the invention comprises a replaceable energy buffer for a firearm.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: June 17, 2014
    Inventor: Chester F. Vanek
  • Patent number: 8752472
    Abstract: A reduced recoil weapon includes a housing and a receiver translatably disposed in the housing. A barrel is fixed to the receiver. A pair of recoil rods has first ends that are fixed to the receiver and are translatable with respect to the housing. Recoil springs are disposed around each recoil rod with first ends of the recoil springs abutting a forward surface of the housing. A bolt and bolt carrier are translatably disposed in the receiver. A bolt carrier return spring is disposed in the housing between the bolt carrier and a rear surface of the housing. Gas pressure from a gas piston on the barrel translates an operating rod toward the bolt carrier. An operating rod spring disposed in the receiver biases the operating rod toward the gas piston.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: June 17, 2014
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Hansen Lukman, Kevin Russell
  • Patent number: 8707850
    Abstract: A rifle with an upper receiver and a barrel attached to the upper receiver and including a bolt carrier, and operating, buffer, and cooling systems. The operating system includes a cylinder and a piston coupled to receive propelling gases from the barrel. As the piston moves between retracted and extended positions the bolt carrier is moved between closed and open positions. The bolt carrier includes a weight movable within a guide frame between rearward and forward limits. The buffer system includes a compression spring in a tube attached to the upper receiver in abutting engagement with the bolt carrier. A partially fluid filled cylinder is attached to a coil of the spring and includes a piston and shaft. The piston is formed so that fluid in the cylinder restricts movement in one direction and allows free movement in a second direction.
    Type: Grant
    Filed: September 3, 2012
    Date of Patent: April 29, 2014
    Inventor: Robert Bruce Davies
  • Patent number: 8689672
    Abstract: A convertible gas piston conversion system for the AR-15, AR-10, or their variant rifle platforms is provided to convert the platform from a direct impingement gas system to a piston driven operating system. The conversion system includes a gas block having a barrel bore and two piston cylinder bores one on either side of the gas block. One of the piston cylinder bores is for utilization of the AR-15 rifle and the other of the piston cylinder bores is for utilization of the AR-10 rifle, making this piston system convertible for either the AR-15, AR-10, or any of their variant rifle platforms. A piston cylinder is inserted into the gas block via the piston cylinder bore and a piston is actuated inside the piston cylinder to cycle the rifle. A connecting link is coupled between the piston and an op-rod making the gas systems length adjustable by simply replacing the connecting link.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: April 8, 2014
    Inventor: Charles Blue Cassels
  • Patent number: 8651010
    Abstract: The invention relates to the trigger and firing mechanisms for pistols. The inventive pistol comprises a frame (1), a barrel (2) with a cartridge chamber (3), a cartridge feeding mechanism (4), a fired case removing mechanism and a breech block return spring (12). The breech block (13) is slidable parallel to the barrel axis and comprises a firing mechanism, which consists of a firing spring stop (14), a firing spring (15), a striker (16) having a firing pin tip (17), a cocking notch (18) and rest pads for a firing spring (19) and for a striker spring (20). The breech block (13) includes a mechanism for sinking the firing pin tip (17) in a position, which makes possible the chambering of a cartridge, said mechanism having a striker spring (21), the force of which in a precompressed condition is greater than the precompressed force of the firing spring (15). The striker spring stop (22) is installed in the breech block (13) for fixing the precompressed force of the striker spring (21).
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: February 18, 2014
    Inventor: Volodymyr Igorovych Smirnov
  • Publication number: 20140026745
    Abstract: A method and apparatus providing for a buffer for the movement of pistol slide against the frame. Wherein said buffer system minimally diminishes the rebound of said pistol slide such that the pistol is still functional with respect to proper blowback operation. Wherein said buffer fits the form of frame and directs pressure from glide rod radially.
    Type: Application
    Filed: July 26, 2012
    Publication date: January 30, 2014
    Inventor: Shanyao Lee
  • Publication number: 20130319217
    Abstract: A captured spring assembly for a firearm has a rod having a forward and rearward ends, a movable buffer that defines an aperture that receives the forward end of the rod and is operable to reciprocate between a forward battery position and a rearward retracted position, a coil spring that encompasses the rod, wherein the forward end of the rod has a limit element having a head that is larger in diameter than the rod, wherein the buffer has an internal limit element that is larger in diameter than the rod, and wherein the internal limit element has at least one portion that is smaller in diameter than the limit element head, but also larger in diameter than the rod. There may be a spring stop attached to the rearward end of the rod that is large enough for the spring to bear against and the buffer to strike against.
    Type: Application
    Filed: June 2, 2012
    Publication date: December 5, 2013
    Inventors: John P. Gangl, Dave A. Adolfson
  • Patent number: 8539706
    Abstract: A frame is adapted to be held by a user. A barrel is coupled to the base. A slide is slidably received on the barrel and adapted for rearward movement in response to firing. A full-time spring is operable for abating recoil during the entire rearward movement of the slide including primary and secondary portions of the rearward movement. A recoil reducer includes a part-time spring. The part-time spring is operable for abating recoil during the primary portion of the rearward movement. The recoil reducer also includes an engager. The engager is operable in response to movement of the slide between the primary and secondary portions of the rearward movement to terminate operation of the part-time spring.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: September 24, 2013
    Inventors: Thomas J. Vieweg, Virgil Tripp
  • Patent number: 8485082
    Abstract: A firearm barrel that reduces muzzle climb and recoil by tapping a portion of the discharge products near the breech and venting them toward the muzzle end of a firearm. Some discharge products have also have an upward component to reduce muzzle climb, some have a downward or sideways component to lessen the effect of the upwardly directed discharge products on a top mounted accessory such as a telescopic sight.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: July 16, 2013
    Inventor: Edward Masaki
  • Patent number: 8430015
    Abstract: A buffer tube for a firearm, which is not an M16-type firearm, the buffer tube including a recoil mitigation tube, a recoil piston reciprocatingly mounted inside the recoil mitigation tube, and a recoil absorbing mechanism disposed in the recoil mitigation tube and engaging the recoil piston.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: April 30, 2013
    Inventor: Sagi Faifer
  • Patent number: 8418389
    Abstract: A recoil-reducing weapon may include a housing and a receiver translatably disposed in the housing. A barrel may have one end fixed to the receiver and be translatable with respect to the housing. A spring stop may be fixed to the barrel forward of the housing and a spring may be disposed between the spring stop and a front of the housing. An operating group with a gear rack may be translatably disposed in the receiver. A longitudinal member may have one end fixed to the operating group. A counter-mass may have a second gear rack and an opening therein for receiving the longitudinal member. A second spring may be disposed around the longitudinal member. One end of the second spring may bear against the operating group and another end of the second spring may bear against the counter-mass. A pinion gear may be rotatably fixed to the receiver and operable to mesh with the gear rack and the second gear rack.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: April 16, 2013
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Hansen Lukman, James R. Connolly, Kevin Russell
  • Publication number: 20120297971
    Abstract: The present invention is directed to a bushing that allows for adaptation of a single spring guide rod assembly into handgun with dual spring guide rod assemblies to further allow for greater customization and control of the gun upon recoil when the chambered cartridge is discharged.
    Type: Application
    Filed: December 29, 2010
    Publication date: November 29, 2012
    Inventor: Willard Lester
  • Patent number: 8307941
    Abstract: A seismic gun system for surveying underground geological topology, the seismic gun system comprising a projectile, a seismic gun body, a barrel, and a guide tube. The projectile includes an outer tubular jacket and a frangible material in its interior. A exterior surface of the tubular jacket is textured to regulate tubular jacket disruption. The barrel includes a breach end and a muzzle end. The breach end is connectable to the seismic gun body for receiving the projectile into said barrel and said muzzle end directing the projectile towards the bottom of a bore hole. The guide tube has an upper end and a terminal end. The upper end of the guide tube is connectable to the muzzle end of the barrel. The guide tube has walls to direct the projectile towards the bottom of the bore hole when aimed therein.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: November 13, 2012
    Inventors: Chris Luchini, Richard Morley
  • Patent number: 8297175
    Abstract: A rifle with an upper receiver and a barrel attached to the upper receiver and including a bolt carrier, and operating, buffer, and cooling systems. The operating system includes a cylinder and a piston coupled to receive propelling gases from the barrel. As the piston moves between retracted and extended positions the bolt carrier is moved between closed and open positions. The bolt carrier includes a weight movable within a guide frame between rearward and forward limits. The buffer system includes a compression spring in a tube attached to the upper receiver in abutting engagement with the bolt carrier. A partially fluid filled cylinder is attached to a coil of the spring and includes a piston and shaft. The piston is formed so that fluid in the cylinder restricts movement in one direction and allows free movement in a second direction.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: October 30, 2012
    Inventor: Robert Bruce Davies
  • Patent number: 8215224
    Abstract: A recoil brake includes a control rod disposed in a central opening in a piston and cylinder assembly. A fluid passage leads from the piston to the control rod. A long stroke body is fixed to the piston and defines a long stroke orifice around the control rod. A short stroke body is removably disposed in the long stroke orifice. The short stroke body defines a short stroke orifice around the control rod, the short stroke orifice being smaller than the long stroke orifice. The recoil brake may be used with a 120 mm gun.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: July 10, 2012
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard W. Tortorici, Jr., Ronald Gast, Edward Hyland, Richard W. Tortorici, III
  • Patent number: 8104568
    Abstract: A seismic gun assembly comprising a barrel and guide tube assembly for delivering a projectile to the bottom of a bore hole with a non-line-of-sight section. The guide tube being either a large diameter guide tube or a tight fitted guide tube. The large diameter guide tube allowing the projectile to perform shallow angle bounces to reach the bottom of a non-line-of-sight bore hole. The tight fitted guide tube allows the projectile to ride the inner wall of the guide tube to reach the bottom of a non-line-of-sight bore hole. The projectile comprises an outer jacket and a frangible core. The seismic gun barrel assembly additionally comprises a fluid exclusion puck for preventing fluids from entering the guide tube, a suppressing collar for suppressing seismic noise, and a method for modulating recoil.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: January 31, 2012
    Inventors: Chris Luchini, Richard Morley
  • 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
  • Patent number: 8037806
    Abstract: A rifle with an upper receiver and a barrel attached to the upper receiver and including a bolt carrier, and operating, buffer, and cooling systems. The operating system includes a cylinder and a piston coupled to receive propelling gases from the barrel. As the piston moves between retracted and extended positions the bolt carrier is moved between closed and open positions. The bolt carrier includes a weight movable within a guide frame between rearward and forward limits. The buffer system includes a compression spring in a tube attached to the upper receiver in abutting engagement with the bolt carrier. A partially fluid filled cylinder is attached to a coil of the spring and includes a piston and shaft. The piston is formed so that fluid in the cylinder restricts movement in one direction and allows free movement in a second direction.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: October 18, 2011
    Inventor: Robert B. Davies
  • 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
  • Patent number: 7681351
    Abstract: A hydraulic recoil buffer assembly for a firearm having a receiver and a fixed or collapsible stock assembly including an end cylinder adapted to be secured to the pistol grip or receiver of the firearm and slidably translatable with respect to the extension tube, and a hydraulic shock absorption assembly operative to produce a hydraulic resistance to a rearward movement of the end cylinder during recoil of the firearm. The hydraulic shock absorption assembly has an orifice restricted fluid flow passage and a piston head that compresses a return spring as the end cylinder moves rearward against a recoil coil spring. The recoil buffer assembly stores a portion of the recoil energy through compression of the recoil spring and the return spring, and dissipates a portion of the recoil energy through the resistance provided by fluid flow through the orifice restricted flow passage.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: March 23, 2010
    Assignee: Enidine, Inc.
    Inventors: Brian C. Bucholtz, William W. Shurmatz, Gregg F. Johannes
  • 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: 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: 7530299
    Abstract: A muzzle brake includes three primary structural components, namely a main body, a baffle, and an end cap. The components are preferably integrally fabricated into a single piece device, or alternatively may be fabricated separately and assembled. A muzzle brake in accordance with the present invention comprises a generally cylindrical muzzle brake assembly attachable to the muzzle end of a firearm. The muzzle brake assembly forms two expansion chambers, each of which is bounded by a peripheral sidewall defining opposing left and right vent apertures and a converging end wall. The end walls define axially aligned openings sized slightly larger than the diameter of the projectile for allowing the projectile to pass from the firearm muzzle, through the muzzle brake, and onward down the target line toward the intended target. The first chamber defines opposing left and right vent apertures for venting gases generally upward and rearward to reduce muzzle jump.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: May 12, 2009
    Inventor: Charles Poff
  • Patent number: 7493845
    Abstract: A recoil mechanism for a gun with a frame, a barrel and a slide, has a cylinder with a rear with external flange and an internal diaphragm spaced forwardly of the flange and between a rear chamber and a front chamber in the cylinder. A nut is fixed to the frame and an axle has a rear end threaded to the nut and extends in the cylinder. The axle has a collar trapped in the front chamber by the diaphragm. A first spring around the cylinder, has a front end abutting the slide and a rear end abutting the flange. A second spring extending at least partly in the rear chamber has a rear end abutting the nut and a front end abutting the diaphragm. A third spring in the front chamber, is shorter in length than the front chamber. A recoil adjusting plug is used with or without the recoil mechanism.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: February 24, 2009
    Inventor: Dimitrios Mantas
  • Patent number: 7478495
    Abstract: A weapon includes a receiver having a bolt carrier assembly therein; a buttstock disposed behind the receiver, the buttstock having a tubular opening adjacent an end of the bolt carrier assembly; a larger diameter spring disposed in the tubular opening; a smaller diameter spring disposed in the larger diameter spring; a rod disposed in the rear end of the smaller diameter spring; a bumper attached to the rod; and a cap disposed in the front end of the spring, the cap having a head wherein a front side of the head engages the end of the bolt carrier assembly and a front end of the larger diameter spring bears against a rear side of the head.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: January 20, 2009
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Ronny Alzamora, John Heinsohn, Brian Donovan, Kevin Russell, Adam Foltz
  • Patent number: 7343844
    Abstract: An anti-recoil system for counteracting recoil in firearms and weapons using a gas actuated piston assembly is disclosed. A recoil piston is acted upon by gas pressure routed from the receiver/barrel. High pressure gas causes forward movement of the recoil piston thereby generating a force opposing the recoil generated upon firing. A shock absorbing bumper connected to the piston engages the weapon's rearwardly moving bolt assembly. The bolt assembly forces the recoil piston rearward and compresses the bumper and expanded gas in the recoil piston chamber thereby absorbing additional recoil forces. Upon reaching a rear most position a gas relief valve is opened allowing venting of the compressed gases at which point the bolt operating main spring propels the bolt assembly forward, stripping the top round out of the ammunition magazine, loading the next round, locking the bolt and freeing the firing pin to fire the next round.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: March 18, 2008
    Inventor: Charles Poff, Jr.