Breech Block, Barrel Or Hammer Disconnected Patents (Class 89/141)
  • Patent number: 10337818
    Abstract: A modification to a trigger assembly for an AK style firearm having a trigger with sear and a disconnector pivotally coupled to the trigger, includes a secondary disconnector pivotally coupled to the trigger rearward of the disconnector and movable between a limiting position toward the disconnector and a non-limiting position away from the disconnector. A selector bar is movable between a front position, engaging the trigger to prevent rotation thereof, a middle position allowing the secondary disconnector to be biased into the limiting position engaging the disconnector, and a back position engaging the secondary disconnector and retaining the secondary disconnector in the non-limiting position against the bias and spaced from the disconnector.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: July 2, 2019
    Inventor: John Burton Sampson, Jr.
  • Patent number: 10288373
    Abstract: A firearm includes a sear with a sear tip, the sear movable between a stop-fire position, wherein a discharge mechanism is held by the sear tip against movement that would result in firing of a round, and a fire position, wherein the discharge mechanism is released by the sear tip to permit movement of the discharge mechanism to fire a round. The firearm includes a sear return delay mechanism delaying the return of the sear tip to the stop-fire position from the fire position.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 14, 2019
    Assignee: OHIO ORDNANCE WORKS, INC.
    Inventors: Thomas M. Hardman, Robert W. Landies, III, Joshua G. Hershberger, Gary T. Hershberger
  • Patent number: 9377260
    Abstract: A rotational safety device for a firearm is provided that replaces a traditional cross bar safety device. The safety device is easier to operate and easier for a firearm user to assess whether the firearm can be fired than previous safety systems. The safety device of the present technology involves setting a safety to “fire” or to a no fire or “safety on” position by causing a safety member installed within a trigger mechanism to rotate about an axis. The safety device may include a recessed portion that may be rotationally positioned to face a trigger to allow the trigger to be completely depressed. The safety device may also include one or more locking positions in a range of rotation, physical limits on the range of rotation such as pins that engage surfaces of a firearm, and may be used with a variety devices to provide rotation.
    Type: Grant
    Filed: January 12, 2014
    Date of Patent: June 28, 2016
    Assignee: S2 LLC
    Inventors: Andrew Locher, Jason Jennings
  • Patent number: 7676974
    Abstract: In an automatic rifle which has been converted for non-military purposes to be semi-automatic by the removal of parts that allow its automatic function, additional suppressing elements are provided to ensure that the interruptor remains depressed until the bolt carrier fully passes the striker catch before the striker catch is engaged by the interruptor. This prevents premature connection of the striker catch and the interruptor, which could prevent sufficient striker spring pressure so that the next round can be fired. In one embodiment the trigger mechanism is fitted with an additional suppressing element (10) formed as a side push plate 7 on the bridge (6) of bolt carrier (5).
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: March 16, 2010
    Assignee: Tomas Quis
    Inventor: Vladimir Zemanek
  • Patent number: 7578227
    Abstract: A fire control mechanism provides semi-automatic, burst, fully automatic, and safe modes for a firearm. The fire control mechanism includes first, second and third shafts. A hammer is rotatably mounted on the first shaft and biased for rotation about the first shaft in a first direction. An auto sear is mounted on the second shaft and engageable with the hammer. A semi disconnect is mounted on the second shaft and engageable with the hammer. A primary sear is mounted on the third shaft and engageable with the hammer.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: August 25, 2009
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Adam M. Jacob
  • Patent number: 6976416
    Abstract: A firing mechanism includes a hammer, an electrical solid-state full auto sear positioned to engage the hammer in a first electrical state and to disengage from the hammer in a second electrical state, and a controller connected to the electrical solid-state full auto sear for causing the electrical solid-state full auto sear to change from the first electrical state to the second electrical state. The controller may include circuitry for causing the electrical solid-state full auto sear to change from the first electrical state to the second electrical state at a predetermined rate, a predetermined number of times, or for a predetermined period of time. The hammer may include a retractable hammer bent for engagement with the electrical solid-state full auto sear, and the electrical solid-state full auto sear may include a piezoelectric device.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: December 20, 2005
    Assignee: Crystal Design, LLC
    Inventor: George D. Ealovega
  • Patent number: 6415702
    Abstract: A 1911A1 model style handgun that includes a double action trigger assembly. The hammer of the handgun is cocked and released by a drawbar mounted internally to the frame. The handgun also includes a grip mounted safety device to prevent accidental discharging of the handgun and a device to de-cock the handgun without discharging a chambered round.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: July 9, 2002
    Assignee: Angelotti, Inc.
    Inventors: Atilla Szabo, Borislav B. Vulanovic
  • Patent number: 6142057
    Abstract: A tubular weapon with a weapon tube (1) guided inside a cradle tube (2) which is mounted stationary in axial direction. In order to provide such a tubular weapon with a cooling system (12) between the weapon tube and the cradle tube (1, 2) and to avoid the occurrence of sealing problems in the transition region between the weapon tube and the cradle tube, the cooling system (12) has at least one cooling line (11), which is positioned spirally around the weapon tube (1), and which is connected rigidly to the cradle tube (2).
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: November 7, 2000
    Assignee: Rheinmetall W & M GmbH
    Inventor: Helge Schulze
  • Patent number: 6142058
    Abstract: A weapon comprising a combination lethal weapon and less lethal gas-powered weapon mounted below the lethal weapon. The less lethal weapon which fires projectiles is independently operable when dismounted and included bolt, gas supply and magazine features.
    Type: Grant
    Filed: November 11, 1998
    Date of Patent: November 7, 2000
    Inventors: Wayne R. Mayville, Thomas E. Wergen
  • Patent number: 6135005
    Abstract: A two-barrel gun for firing two types of ammunition includes a single breech locking mechanism for both barrels. The gun includes a selector lever for activating one of two bolts associated with the two barrels, and a single trigger for firing ammunition from a chamber associated with the activated bolt. The gun further includes two magazines for feeding ammunition to the chambers, and a pump-action forearm for ejecting spent ammunition and for loading a new round of ammunition into the chamber associated with the activated bolt. The single breech locking mechanism extends forwardly of the chambers, and the actual breech locking engagement occurs in front of the bolts. Therefore, the receiver section of the gun can be made more compact, and can more easily accommodate other essential components.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: October 24, 2000
    Assignee: Hesco, Incorporated
    Inventor: David Dobbins
  • Patent number: 6125735
    Abstract: A fully automatic self-loading weapon is disclosed. The weapon has a functional part that can be moved by the release of a round, and a connectable and disconnectable single-shot device which, when activated, causes release of one shot for every actuation of the weapon trigger. To restrict the number of rounds of a burst to only two rounds, after release of one round with the single-shot device disconnected, the movement of the functional part automatically activates the single-shot device so that only a single additional round is released.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: October 3, 2000
    Assignee: Heckler & Koch GmbH
    Inventor: Manfred Guhring
  • Patent number: 6012374
    Abstract: An automatic combination rifle with a large caliber automatic rifle system and a normal caliber automatic rifle system that include respective triggering arrangements which are connected with a single, movable trigger lever with the use of an activated change-over mechanism. Each triggering arrangement comprises a movable release mechanism to control the respective trigger function. The change-over mechanism establishes a selective connection with one of the release mechanisms for cooperative movement with the trigger lever.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: January 11, 2000
    Assignee: Heckler & Koch GmbH
    Inventors: Rudolf Brandl, Heinz Matt
  • Patent number: 5915937
    Abstract: A substantially nonbonded composite/metallic gun barrel is disclosed. The gun barrel has a metallic liner and a composite casing disposed thereabout. Unlike composite/metallic gun barrels of the prior art, the embodiments of the present invention provide little if any bonding between the composite casing and the metallic liner so as to decrease the warping of the gun barrel caused by the differing thermal expansion coefficients of the composite material and the metallic liner. In accordance with one aspect of the invention, a short binding layer is used to hold the composite casing to the metallic liner adjacent the chamber which holds a cartridge to be fired. The short layer prevents rotation of the casing and the liner with respect to one another, while preventing little risk of warping. In accordance with another aspect of the invention, a holding pin is inserted in the gun barrel to prevent the metallic liner and the composite casing from rotating relative one another.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: June 29, 1999
    Assignee: Roland J. Christensen Family Limited Partnership
    Inventor: Roland Christensen
  • Patent number: 5913261
    Abstract: A trigger arrangement for an automatic weapon with switch-over between continuous firing and single-shot modes includes a hammer, a breechblock, a latch, a pivotably mounted trigger, and a firing lever. In the single-shot mode, the firing lever engages the hammer and retains it in tension while the trigger is depressed. When the continuous firing mode is selected, the firing lever is moved to an inactive position and retained by an engaging element. The engaging element is preferably a slider which is controlled by a safety and firing cessation roller that is actuated by an operating lever.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: June 15, 1999
    Assignee: Heckler & Koch GmbH
    Inventors: Manfred Guhring, Helmut Danner
  • Patent number: 5883329
    Abstract: A barrel assembly (10) includes barrel (12), projectile assemblies (14) axially disposed within the barrel, propellant charges (16), ignition means (18), and control means (20). Projectile assemblies (14) are sequentially fired from the barrel. Also disclosed is an arming system, a barrel construction, means for preventing compression of the propellant charges and means for ensuring sealing between the projectile assembly and the barrel.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: March 16, 1999
    Inventor: James Michael O'Dwyer
  • Patent number: 5852253
    Abstract: The present invention relates to a personal firearm system characterized by the fact that it comprises at least two launch barrels (300, 500) and damper means (400) associated with at least a main barrel (300) and adapted to limit the recoil force generated thereby on firing.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: December 22, 1998
    Assignee: Etienne Lacroix Tous Artificess.A.
    Inventors: Jean Baricos, Guy Valembois, Michel Castarede
  • Patent number: 5837921
    Abstract: A composite gun barrel 10 with active cooling having a breech end and a dharge end. The barrel includes an outer jacket 11 having radially inwardly projecting ports 15 proximate the breech end 25 extending inwardly from the outer diameter of the jacket, and an inner liner 13 inside the jacket and extending beyond the discharge end of the jacket prestressed by autofrettage to form a permanent integral assembly. The inner liner has a circumferentially located annular space 17, the ports being in operable communication with the annular space. A plurality of circumferentially spaced longitudinal channels 19 on the liner extend from the annular space to a location 21 beyond the discharge end of the jacket. The liner includes a shoulder 23 located between the breech end of the barrel and the inwardly projecting ports for locating the jacket on the liner.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: November 17, 1998
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Christopher S. Rinaldi, Jeffrey W. Haas, Edward J. Hyland, James A. Neese
  • Patent number: 5726375
    Abstract: A gun barrel shrouding system is capable of significantly reducing the infrared signature of a gun barrel, without directly cooling the gun barrel. A shroud is placed around the gun barrel, but the shroud does not contact the gun barrel. Air is circulated through the shroud to cool the shroud itself, but the very hot gun barrel is only partially cooled by the air as the air exits from the shroud. Since the shroud does not contact the gun barrel, the shroud may be manufactured of a lightweight and simple design, and the recoil action of the gun barrel upon firing do not need to be compensated for by the shroud.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: March 10, 1998
    Assignee: McDonnell Douglas Helicopter
    Inventors: Nathan G. Adams, Kal V. Geiler
  • Patent number: 5703318
    Abstract: A gun mount system is described which is capable of firing long range protiles under rapid firing conditions with gun tube and recoil system replaceability under field conditions.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: December 30, 1997
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Anthony R. Franchino, Steven McDonald
  • Patent number: 5692334
    Abstract: A substantially nonbonded composite/metallic gun barrel is disclosed. The gun barrel has a metallic liner and a composite casing disposed thereabout. Unlike composite/metallic gun barrels of the prior art, the embodiments of the present invention provide little if any bonding between the composite casing and the metallic liner so as to decrease the warping of the gun barrel caused by the differing thermal expansion coefficients of the composite material and the metallic liner. In accordance with one aspect of the invention, a short binding layer is used to hold the composite casing to the metallic liner adjacent the chamber which holds a cartridge to be fired. The short layer prevents rotation of the casing and the liner with respect to one another, while preventing little risk of warping. In accordance with another aspect of the invention, a holding pin is inserted in the gun barrel to prevent the metallic liner and the composite casing from rotating relative one another.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: December 2, 1997
    Assignee: Roland J. Christensen Family Limited Partnership
    Inventor: Roland J. Christensen
  • Patent number: 5675105
    Abstract: A firing abort and hang fire safety system for a small or medium caliber multi-barrel automatic weapon includes a device to immobilize the revolving assembly (100) of the weapon in rotation. This device includes a shock-absorbing device mounted coaxially to the revolving unit of the weapon, a control device integral in rotation with the revolving unit and able to translate, further to the misfire of a round of ammunition or to the activation of an external control, to compress the shock-absorbing means device and absorb the rotational kinetic energy of the revolving unit of the weapon. The backspring of the shock-absorbing means device thereafter causing the revolving unit of the weapon to rotate in the opposite direction before stopping.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: October 7, 1997
    Assignee: CTA International
    Inventors: Georges Simon, Patrice Pichot
  • Patent number: 5661254
    Abstract: Described is a system (10) for protecting a target such as an armoured vehicle, a bunker or the like from missiles. The protective system (10) has a launching container (12) with at least one launching tube (36) for an associated fragmentation projectile (38), mounted adjustably on a base portion (14). A sensor arrangement (26, 28) is provided for detecting the target to be combatted and aligning the launching container (12) with the target to be combatted. A control device (32) for a drive arrangement (24) is connected together with the sensor arrangement (26, 28) by way of a signal processing device (30). The drive arrangement (24) serves for aligning the launching container (12) with respect to the base portion (14). The/each fragmentation projectile has a special fragmentation filling (40) and a fuse device (44) for controlling the time of detonation.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: August 26, 1997
    Assignee: Diehl GmbH & Co.
    Inventors: Raimar Steuer, Karl Rudolf
  • Patent number: 5650586
    Abstract: An anti-buckle fitting for a large caliber gun barrel, the fitting being constituted by an envelope that surrounds the barrel at a distance therefrom and of a length that is substantially equal to the outside portion of the barrel, the fitting comprising a front ring fixed near the free end of the barrel and a back ring fixed near the fume extractor of the barrel, and wherein the envelope is in the form of two half-shells assembled together by link means.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: July 22, 1997
    Assignee: Giat Industries
    Inventors: Patrick Balbo, Philippe Grelat, Guy Malassenet, Fabienne Mandereau
  • Patent number: 5623114
    Abstract: An improved trigger mechanism for weapons having full automatic fire capability. Exertion of a first predetermined trigger pressure enables the disconnector to engage the hammer in a semi-automatic fire mode. Exertion of a second, greater trigger pressure disables the disconnector, enabling a full automatic mode of fire.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: April 22, 1997
    Inventor: Terry A. Soper
  • Patent number: 5559303
    Abstract: A plurality of magazines each receive an array of pyrotechnic devices. The magazines are latched to a fire control and support assembly which automatically engages the fire control circuit to each device of each magazine. The circuit ignites all devices of all the magazines in a given serial sequence. The system, under control of an operator, when turned off, may be restarted at the beginning of a selected sequence, at the point where the last device was ignited and continue the sequence or at selected different portions of devices. Different size devices can be ignited by one circuit using different magazines all coupled to one unit. Safety features also include delay ignition after startup and sounding an alarm before any device is ignited. A CPU is enabled by a fire command signal and disabled by internal programmed instructions. The CPU is periodically enabled in a device ignition cycle by external timing signals initiated by the CPU when enabled.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: September 24, 1996
    Assignee: Joanell Laboratories, Inc.
    Inventors: Joseph L. La Mura, Ronald C. Wallenburg
  • Patent number: 5490343
    Abstract: A safety for the defensive weapon set forth in U.S. Pat. No. 3,352,046 is disclosed. The safety incorporates an elongated lever which moves between safe and firing positions. The lever is mounted on a pivot pin. A pair of dished areas serve as locking detents. A spring loaded hemispheric member rides against the lever and locks the levers so that the lever is prevented from movement accidentally and can only be moved by hand operation of the lever between safe and firing positions.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: February 13, 1996
    Inventors: Thornton E. Cory, John N. Gold, Jr.
  • Patent number: 5475940
    Abstract: A firearm. The rear end of the barrel is directly adjacent to the frontmost point traveled by a slide. The slide travels back and forth inside the weapon's housing. The outside of the barrel is fastened directly or by way of an intermediary to a housing. The area inside the housing (12) and immediately behind the rear end (22) of the barrel (16) communicates with the atmosphere through at least one gas-escape port (26 or 26' & 20).
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: December 19, 1995
    Assignee: Heckler & Koch
    Inventors: Ernst Mauch, Manfred Guhring
  • Patent number: 5450686
    Abstract: A plurality of magazines each receive an array of pyrotechnic devices. The magazines are latched to a fire control and support assembly which automatically engages the fire control circuit to each device of each magazine. The circuit ignites all devices of all the magazines in a given serial sequence. The system, under control of an operator, when turned off, may be restarted at the beginning of a selected sequence, at the point where the last device was ignited and continue the sequence or at selected different portions of devices. Different size devices can be ignited by one circuit using different magazines all coupled to one unit. Safety features also include delay ignition after startup and sounding an alarm before any device is ignited. A CPU is enabled by a fire command signal and disabled by internal programmed instructions. The CPU is periodically enabled in a device ignition cycle by external timing signals initiated by the CPU when enabled.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: September 19, 1995
    Assignee: Joanell Laboratories, Inc.
    Inventors: Joseph L. La Mura, Ronald C. Wallenburg
  • Patent number: 5440963
    Abstract: A bolt assembly is provided for a double-barrel firearm, such as a rifle or a shotgun. The bolt assembly is adapted to fit in the receiver of the double-barrel firearm. The bolt assembly comprises a bolt body which connects to first and second breech bolts, and which also couples to a bolt collar. The bolt collar has a bolt handle for operating the bolt assembly. The bolt body and breech bolts have recesses for accepting first and second firing pin assemblies. The firing pin assemblies include first and second cocking pieces, which are both cocked by means included in the bolt collar. Once cocked, the cocking pieces can be released independently of each other for firing using trigger means. Pulling the bolt assembly rearwards ejects the fired cartridges through an ejection port on the receiver. The receiver also includes a cartridge injector port which couples to a magazine capable of storing additional cartridges.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: August 15, 1995
    Inventor: Jozsef Szecsei
  • Patent number: 5400691
    Abstract: A rigid thermal sleeve 5 mountable over at least part of a gun barrel 3 in such a way that it is symmetrical about a longitudinal plane A--A to provide a reduced thermal image and radar cross section. The sleeve 5 comprises thermally insulating material 13 between an inner skin 15 and an outer skin 17. The outer skin 17 is arranged to have two mutually convergent planar faces 7,9, each one of which makes up at least 15% of the outer surface of the sleeve 5 and which have a mutual line of convergence extending externally and longitudinally of the sleeve 5.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: March 28, 1995
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventors: William K. Suttie, Edgar H. Vickers
  • Patent number: 5381721
    Abstract: A release unit for launching countermeasures from a vehicle. A first module in the form of a central body mounted on the vehicle. The first module includes at least three openings: a first opening facing the vehicle when the first module is mounted on the vehicle, and second and third openings directed obliquely with respect to the first opening in substantially opposite directions from each other. The directions the second and third openings face are separated by 60.degree.-120.degree.. A second module and a third module in the form of release cassettes are received respectively by the second and third openings and removably fixed by with a locking member. A plurality of countermeasures are launched from the release units. Each release cassette includes a plurality of countermeasure openings for receiving the countermeasures. The countermeasure openings in each cassette are aimed substantially in the same direction.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: January 17, 1995
    Assignee: NobelTech Electronics
    Inventors: Peter Holmstrom, Sven Pettersson
  • Patent number: 5355768
    Abstract: A select fire automatic pistol comprising: a frame; a slide with a breech-block in the rear which slides on the frame over the barrel to form a cartridge receiving chamber; a floating barrel in the slide having a cartridge receiving rear; a trigger safety lever for preventing the movement of the trigger to the activating position; a magazine drop safety to stop the trigger moving to the activated position when the magazine is not fully seated; a trigger bar connected to the trigger including an ledge for displacement of the firing pin backwards to the rear position; a firing pin including a foot on its rear for engagement with the trigger bar ledge and having a spring threadled on the rear of the firing pin for propelling same forward into the cartridge chamber to fire a cartridge and a spring threadled on the front of the firing pin urging same backwards to stop it entering the cartridge chamber if the pistol is dropped; an ejector plate to eject the empty shells, create a safety zone and stabilize the ledge
    Type: Grant
    Filed: May 19, 1993
    Date of Patent: October 18, 1994
    Inventor: Edward K. Felk
  • Patent number: 5299487
    Abstract: A weapons system (10) with at least one barrel (12) is provided, wherein the barrel is arranged on a weapon carrier (14) which is mounted by trunnions (16) between cradle supports (18), and its elevation is adjustable. A separate ammunition container (26, 28), which is connected to the corresponding barrel (12) by an ammunition feed canal (22, 24), is associated with the barrel (12). The ammunition feed canal (22, 24) has a rigid first canal partial section (36, 44) and a rigid second canal partial section (38, 46), which are connected to one another via arc-shaped connection end sections (40, 42; 48, 50). The connection end sections (40, 42; 48, 50) are provided at the corresponding trunnion (16) such that the connection between the barrel (12) and the associated ammunition container (26, 28), and consequently excellent ammunition feed, are guaranteed in any desired elevation position.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: April 5, 1994
    Assignee: Mauser-Werke Oberndorf GmbH
    Inventors: Roland Bertiller, Helmut Reudelsterz, Friedhelm Kersting
  • Patent number: 5269214
    Abstract: A projector assembly of a defensive projecting device for containing a plurality of projectiles for defending a given object, the assembly including a plurality of projectors combined into a unitary magazine block which can be slid into a magazine carrier having a bottom plate and a magazine shoe, and locked in place. The magazine carrier is mounted on the object to be defended.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: December 14, 1993
    Assignee: Buck Werke GmbH & Co.
    Inventors: Wolfgang Badura, Harald Watzinger, Kurt Adamek
  • Patent number: 5259289
    Abstract: A munitions launcher comprising a plurality of ejector assemblies each suitable for receiving a munition, and a base made of thermoplastic material molded over a portion of the periphery of the various ejector assemblies and over the rear thereof.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: November 9, 1993
    Assignee: Etienne Lacroix Tous Artifices S.A.
    Inventors: Francis Peries, Herve Tustes
  • Patent number: 5245905
    Abstract: A continuous bore evacuation system for aspirating the noxious gas products associated with the firing of tank rounds and for cooling all or part of the gun barrel between rounds. The bore evacuator employs an annular container which is fixed to the exterior surface of the gun barrel, preferably just ahead of the powder chamber. A plurality of canted ports lead from the container into the bore so that gas products can fill the container after a projectile passes the ports, and a compressed gas can be pumped in through check-valves to continuously clear the bore of gas products after launch. The ports may be arranged in a cochlear manner so that the flow of gas is substantially helical. In another embodiment, an aerosol solvent is injected into the compressed gas to prevent accumulation of propellant residue within the container, check-valves, and bore evacuator holes.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: September 21, 1993
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Mark L. Bundy
  • Patent number: 5202530
    Abstract: A light armor piercing weapon, which is hand carried by a single man, is provided for firing or launching armor piercing rocket propelled projectiles. A propellent pack is worn or carried by the soldier along with a launching rifle. Unsymmetrical dimethylhydrazine is provided as a propellent and inhibited red fuming nitric acid, Type IIIa, is provided as an oxidant in a combustion chamber in the rifle. The explosive combination of the propellent and oxidant propels the projectile out of a smooth bore barrel and simultaneously ignites the solid propellent in the projectile. The projectile is provided with a disposable sabot which seals the projectile within the smooth bore. The projectile is provided from a spiral drum magazine which is gear driven by a mechanical coupling with a reciprocating breech block within the rifle. The reciprocating breech block in turn is gear driven by a gas driven piston communicated with the barrel.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: April 13, 1993
    Inventor: Mark L. Stephens
  • Patent number: 5198600
    Abstract: A mount for rifles is provided, located under the barrel to allow the rifles to carry accessories such as lights, lasers, grenade and flare launchers thereon which mount fits existing rifle configurations without modification to the basic rifle components.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: March 30, 1993
    Assignee: Havis-Shields Equipment Corporation
    Inventor: David J. E'Nama
  • Patent number: 5189245
    Abstract: A thermally and mechanically stable muzzle reference system collimator asbly. The assembly comprises a muzzle reference system collimator and an adaptor plate to adapt the muzzle reference system collimator to the muzzle of a gun. The muzzle reference system collimator and adaptor plate are made up of materials having a low coefficient of thermal expansion. The adaptor plate is bonded to the gun barrel through materials which are capable of absorbing, rather than transmitting, the shock of firing to the muzzle reference system collimator and its fragile internal optical components.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: February 23, 1993
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Mark L. Bundy
  • Patent number: 5117734
    Abstract: A rifle bore cooler is disclosed which is designed to be removably attachable to the end of a rifle barrel. The device includes a ventilating fan which may be battery powered and which may be selectively activated to either blow ambient air into the rifle bore or, alternatively, to pull hot air therefrom.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: June 2, 1992
    Inventor: Richard A. Rhoads
  • Patent number: 5062346
    Abstract: The heat protective covering comprises at least two concentric and cylindrical plate layers (6, 7) fixedly mounted round for instance a gun barrel (1). Rows of holes (12, 13, 14, 15) are shaped along and in, respectively, the upper and lower lines of generatrix of each plate layer (6, 7). The heat protective covering ensures that the bore or the central axis of for instance the gun is completely parallel to the line of sight irrespective of wind and weather from one side, such as a strong sunlight, wind or a heavy shower from one side.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: November 5, 1991
    Assignee: Dansk Industri Syndikat A/S
    Inventors: Niels F. Greve Hansen, Jorn H. Greve Hansen
  • Patent number: 5060552
    Abstract: A rail gun (10) comprising two spaced apart elongate co-extensive rail electrodes (11,12) having confronting surfaces which are of toothed cross-section configuration. Alternate tooth flanks (21) have the outlets of a plurality of nozzles (24) located therein. The nozzles (24) direct helium into the gap (14) between the rail electrodes (11,12). The helium provides electrode (11,12) cooling as well as providing less resistance to armature (15) acceleration than would be the case with air.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: October 29, 1991
    Assignee: Rolls-Royce Business Ventures Limited
    Inventor: Graham A. Reynolds
  • Patent number: 4982648
    Abstract: An arrangement for cooling the gun barrel of a combat tank wherein the gun barrel is provided with helical cooling channels on its outer surface, and an insulation layer on at least the inner circumferential surfaces of the cooling channels. This reduces the IR signature of the gun barrel during combat and avoids deformation of the barrel under the influence of radiation from the sun.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: January 8, 1991
    Assignee: Battelle-Institut e.V.
    Inventors: Johannes Bol, Manfred Schildknecht
  • Patent number: 4941394
    Abstract: The trigger mechanism of a hand-held automatic firearm comprises a catch lever, which is pivoted on a transverse axis and is provided at its forward end with a pivoted catch pawl, which in a catching position engages a catching lug of a slider to arrest the slider as it moves forwardly from a rear position, to which the slider, which constitutes a part of a firing mechanism of the firearm, has moved against spring force when a round has been discharged. In order to provide such a firearm which has a trigger mechanism which is reliable in operation and can be made at low cost, the catch lever is adapted to be locked in its catching position against the force of a catch lever spring, the catch pawl is pivoted to the catch lever by means which permit a longitudinal movement of the catch pawl and the catch pawl is pivotally supported at its other end on an abutment, which is fixed to the receiver of the firearm.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: July 17, 1990
    Assignee: Steyr-Daimler-Puch AG
    Inventors: Ulrich Zedrosser, Walter Schwarz
  • Patent number: 4884490
    Abstract: In order to cool the barrel inner wall of a weapon barrel of a firing weapon at a predetermined location, typically at the rear end region of the weapon barrel, one or more cooling fluid channels are arranged at the barrel wall of the weapon barrel. The cooling fluid channels open at the barrel inner wall. By means of an apparatus which can be actuated by the gas pressure of the propellant gases, there is injected into the interior of the weapon barrel a dosed quantity of cooling fluid after the firing of each cartridge or ammunition round. This apparatus preferably comprises a piston arrangement having a first piston of larger diameter and which is subjected to the gas pressure of the propellant gases and a second piston of smaller diameter at which impinges the cooling fluid.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: December 5, 1989
    Assignee: Werkzeugmaschinenfabrik Oerlikon-Buhrle AG
    Inventor: Ernst Hurlemann
  • Patent number: 4882973
    Abstract: The present invention relates to a multiple function combined weapon, adapted to be used in different uses, characterized in that it comprises a weapon body, supporting a first shot gun or rifle barrel, of reduced length, with the magazine arranged in the central portion of the body. Under the first barrel a second barrel is arranged, of a machine gun type of weapon, the magazine of which is arranged at the front portion of the body. Between the two magazines two triggers are provided which can be actuated for a selective firing, either with the top barrel or with the bottom barrel.
    Type: Grant
    Filed: June 1, 1988
    Date of Patent: November 28, 1989
    Inventor: Armando Piscetta
  • Patent number: 4882974
    Abstract: A method for increasing the hitting probability of multi-barreled machine weapons, especially for four-gun or gatling-type weapon systems. Through a spreading apart of the middle of hitting point locations of the individual weapon barrels, there can be achieved an improvement in the characteristics of the firing spread. This is attained in that the middle hitting point location of the individual weapon barrels is spread apart in such a manner about the middle hitting point location of all of weapon barrels of a weapon system, that the density of hits remains almost constant at a restrictedly increasing deviation from the middle of the hitting point location of all the weapon barrels. The middle hitting point location of the individual weapon barrels can be spread apart by the amount of the average standard deviation of the diring spread of the individual weapon barrels from the middle hitting point location of all weapon barrels of a weapon system.
    Type: Grant
    Filed: December 14, 1988
    Date of Patent: November 28, 1989
    Assignee: Mauser-Werke Oberndorf GmbH
    Inventors: Ingolf Reuter, Dietrich Hoffmann, Harald Weisser
  • Patent number: 4876943
    Abstract: To permit single firing in a machine gun by a mechanical method, a trip lever is moved by a control surface attached to the weapon housing during the weapon recoil after triggering a shot. This motion causes the trip lever to disengage a coupling on the crankshaft. Because of this, the trigger plate can return to its starting position by means of spring force, independently of the position of the cocking lever. The recoil breech can then be caught by the trigger in the weapon housing. If the cocking lever is moved back, it again couples because of the spring.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: October 31, 1989
    Assignee: Mauser-Werke Oberndorf GmbH
    Inventors: Gerhard Bilger, Helmut Mader, Erich Matzagg
  • Patent number: 4867039
    Abstract: A semiautomatic gun which can be used to fire two types of ammunition comprises first and second bolts and a selector assembly operated by a user of the gun. The selector assembly selectively permits loading and firing of one type of ammunition. The gun has only a single trigger for firing either of the bolts selected by the selector assembly and the gun may be a combination of a shotgun and rifle or any other desired configuration. Each of the bolts are movable in a forward and rearward direction when fired and have bolt lock-up bearings for preventing such movement at other times. A reciprocable forestock is provided with a forestock lock release. The forestock can be pumped by the operator to initially load a round of ammunition into the chamber selected by the selector assembly.
    Type: Grant
    Filed: March 23, 1988
    Date of Patent: September 19, 1989
    Assignee: Special Service Arms Mfg. Inc.
    Inventor: David R. Dobbins
  • Patent number: 4841836
    Abstract: A gun tube thermal shroud for reducing temperature gradients across the gun tube caused by asymmetric external and internal heat flux distributions, which includes an inner layer of high thermal conductivity extending about and along the gun tube in intimate thermal contact with the gun tube. In the preferred embodiment, this inner layer is formed of aluminum wire which is tightly wound about the gun tube and which is embedded in a thermally conductive flexible adhesive. The shroud also includes a middle layer of thermal insulating material and an outer layer of high thermal conductivity material, which may be formed in the same manner as the inner layer.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: June 27, 1989
    Inventor: Mark L. Bundy