Tubular Patents (Class 102/503)
  • Patent number: 9885553
    Abstract: A hollow tube projectile and launch cup system comprises a cylindrical hollow tube with an inwardly chamfered leading end and a plurality of elongate vents spaced evenly around a cylindrical wall. The elongate vents are configured to have a semicircular leading edge and an elliptical trailing edge. The trailing edge is configured to extend at an acute angle from an inner perimeter of the cylindrical wall to an outer perimeter thereof. The disclosed launch cup comprises an outwardly chamfered leading end and a plurality of elongate exterior ribs spaced evenly around an otherwise cylindrical wall. The ribs are configured to extend longitudinally from the leading end toward the trailing end and blend into an anterior skirt on the trailing end. The trailing end is configured in a receptacle aft for explosive propulsion and the leading end is configured in a receptacle fore to receive the hollow tube projectile therein.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: February 6, 2018
    Inventor: Keith Allen Langenbeck
  • Patent number: 9200878
    Abstract: Ammunition which includes a bullet having an effective caliber that is larger than its nominal caliber, comprised of a bullet body with a longitudinal cavity in the forward end, and one or more bores extending from the cavity to bore openings on the exterior of the bullet. In use, target media is gathered in the cavity and ejected under force through the bore openings, increasing the damage done by the bullet. Preferably, the bullet cavity and bores are filled with a polymeric or elastomeric material.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: December 1, 2015
    Assignee: LWS Ammunition LLC
    Inventor: Lueder Seecamp
  • Patent number: 8893621
    Abstract: A projectile comprised of an ogive section, a bearing surface section and a boattail section. A cavity is formed inside the projectile from an aperture on the aft end of the boattail section and forward to about the transition point (shoulder) between the ogive section and bearing surface section. The cavity is centered about the centerline of the projectile and open on the aft end of the projectile.
    Type: Grant
    Filed: December 7, 2013
    Date of Patent: November 25, 2014
    Inventor: Rolando Escobar
  • Patent number: 8661983
    Abstract: In one embodiment, a less lethal munition including a ring airfoil projectile. The flight trajectory of the projectile has increased accuracy resulting from the aerodynamic stabilization of the projectile. In some embodiments, the projectile is both aerodynamically stabilized and spin stabilized.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: March 4, 2014
    Inventor: Kimball Rustin Scarr
  • Patent number: 8528481
    Abstract: In one embodiment, a less lethal munition including a ring airfoil projectile. The flight trajectory of the projectile has increased accuracy resulting from the aerodynamic stabilization of the projectile. In some embodiments, the projectile is both aerodynamically stabilized and spin stabilized.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: September 10, 2013
    Inventor: Kimball Rustin Scarr
  • Patent number: 8511232
    Abstract: Apparatus and methods for launching and fabricating projectiles. In some embodiments, one or more ring airfoil projectiles are launched from a gun. Yet other embodiments pertain to the launching of projectiles that disperse tracer or irritant chemicals upon impact. Yet other embodiments pertain to apparatus and methods for molding of munition components.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: August 20, 2013
    Inventor: Kimball Rustin Scarr
  • Patent number: 8327768
    Abstract: My Ring Airfoil Glider Expendable Cartridge and Glider Launching Method is form launching a reduced caliber ring airfoil glider from a conventional grenade launcher barrel with preferred application for less lethal use. A caseless ammunition base contains a primer communicating with a propellant in a rupture disk sealed chamber with a vent used to create, seal and channel propelling gas into a space behind a sabot mounted on a central guide on the base, whereupon releasing the gas, the sabot aligns, seals, pushes and rotates the glider in passage down the barrel, to a point of maximum velocity, whereon, the propelling gas is vented ahead of the glider by the central passage in the sabot as it leaves the guide, whereupon, the bore decelerates the sabot by friction freeing the glider to fly down the bore centered by a turbulent boundary layer of air until it exits the muzzle.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: December 11, 2012
    Inventor: Kimball Rustin Scarr
  • Publication number: 20120180361
    Abstract: Apparatus and methods for launching and fabricating projectiles. In some embodiments, one or more ring airfoil projectiles are launched from a gun. Yet other embodiments pertain to the launching of projectiles that disperse tracer or irritant chemicals upon impact. Yet other embodiments pertain to apparatus and methods for molding of munition components.
    Type: Application
    Filed: June 10, 2011
    Publication date: July 19, 2012
    Inventor: Kimball Rustin Scarr
  • Publication number: 20120073465
    Abstract: My Ring Airfoil Glider Expendable Cartridge and Glider Launching Method is form launching a reduced caliber ring airfoil glider from a conventional grenade launcher barrel with preferred application for less lethal use. A caseless ammunition base contains a primer communicating with a propellant in a rupture disk sealed chamber with a vent used to create, seal and channel propelling gas into a space behind a sabot mounted on a central guide on the base, whereupon releasing the gas, the sabot aligns, seals, pushes and rotates the glider in passage down the barrel, to a point of maximum velocity, whereon, the propelling gas is vented ahead of the glider by the central passage in the sabot as it leaves the guide, whereupon, the bore decelerates the sabot by friction freeing the glider to fly down the bore centered by a turbulent boundary layer of air until it exits the muzzle.
    Type: Application
    Filed: July 22, 2011
    Publication date: March 29, 2012
    Inventor: Kimball R. Scarr
  • Patent number: 8065961
    Abstract: In one embodiment, a less lethal munition including a ring airfoil projectile. The flight trajectory of the projectile has increased accuracy resulting from the aerodynamic stabilization of the projectile. In some embodiments, the projectile is both aerodynamically stabilized and spin stabilized.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: November 29, 2011
    Inventor: Kimball Rustin Scarr
  • Patent number: 7987790
    Abstract: My Ring Airfoil Glider Expendable Cartridge and Glider Launching Method is form launching a reduced caliber ring airfoil glider from a conventional grenade launcher barrel with preferred application for less lethal use. A caseless ammunition base contains a primer communicating with a propellant in a rupture disk sealed chamber with a vent used to create, seal and channel propelling gas into a space behind a sabot mounted on a central guide on the base, whereupon releasing the gas, the sabot aligns, seals, pushes and rotates the glider in passage down the barrel, to a point of maximum velocity, whereon, the propelling gas is vented ahead of the glider by the central passage in the sabot as it leaves the guide, whereupon, the bore decelerates the sabot by friction freeing the glider to fly down the bore centered by a turbulent boundary layer of air until it exits the muzzle.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: August 2, 2011
    Inventor: Kimball R. Scarr
  • Patent number: 7921779
    Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: April 12, 2011
    Assignee: Olin Corporation
    Inventors: Douglas D. Olson, Jack D. Dippold, Randant D. Huelsmann
  • Patent number: 7921780
    Abstract: A projectile (10) comprises a cylindrical body (12) with a first (leading) end (14) and a second trailing axially opposed end (16). An internal cavity (18) is formed between the ends (14 and 16) and holds a volume of propellant material (22). The first end (14) is closed by a nose (20) that is fixed to the body (12). The end (14) is sealed with a base seal (26) that seats a primer (24) for igniting the propellant (22). The primer (24) is located inboard of the second end (16) and the base seal (26) to reduce the likelihood of accidental activation. Seals (30) are formed about the body (12) for maintaining gas pressure of deflagrating propellant. The seals (30) may be formed integrally with the body (12) or separately from the body (12) and seated in respective grooves (40) formed circumferentially about the body (12).
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: April 12, 2011
    Assignee: Techventure Investments Pty Ltd
    Inventor: Leslie Mervyn Harrison
  • Patent number: 7905043
    Abstract: The boresight laser aiming system for firearms provides a laser aiming beam through the mechanical action (20), chamber, and barrel (36) of the operable firearm (10) and through a specially configured live rimfire cartridge within the chamber, enabling a marksman to place the laser upon the target and fire the weapon simultaneously. The laser device (12) may be installed concentrically with a light passage through the bolt (22), hammer, or other mechanism of the firearm, or may be offset with the light path guided by one or more reflective mirrors, prisms, etc. The firearm may comprise a rifle (10), semiautomatic pistol, revolver, etc. The live cartridge has concentric inner and outer tubes defining a toroidal explosive charge-containing chamber therebetween and a light passage through the innermost tube, and a bullet having a passage therethrough allowing light to pass through the live cartridge assembly when placed in the firearm chamber.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: March 15, 2011
    Inventor: David K. Hopkins
  • Publication number: 20100011648
    Abstract: The boresight laser aiming system for firearms provides a laser aiming beam through the mechanical action (20), chamber, and barrel (36) of the operable firearm (10) and through a specially configured live rimfire cartridge within the chamber, enabling a marksman to place the laser upon the target and fire the weapon simultaneously. The laser device (12) may be installed concentrically with a light passage through the bolt (22), hammer, or other mechanism of the firearm, or may be offset with the light path guided by one or more reflective mirrors, prisms, etc. The firearm may comprise a rifle (10), semiautomatic pistol, revolver, etc. The live cartridge has concentric inner and outer tubes defining a toroidal explosive charge-containing chamber therebetween and a light passage through the innermost tube, and a bullet having a passage therethrough allowing light to pass through the live cartridge assembly when placed in the firearm chamber.
    Type: Application
    Filed: February 29, 2008
    Publication date: January 21, 2010
    Inventor: David K. Hopkins
  • Patent number: 7581500
    Abstract: A ring airfoil projectile is defined by an annular body which defines a central passage. The body is constructed so that a center of pressure is substantially coincident with a center of gravity thereof. The body is preferably constructed of a nose section and tail section, the nose section of a material having a higher density than the material forming the tail section. The ring airfoil projectile is configured to deliver a payload to a target. Cavities extend inwardly from the outer surface of the airfoil, preferably in the nose section. The cavities accept payload or a strip containing payload. The ring airfoil projectile is configured to travel with minimum path dispersion, and to deliver the payload upon impacting a target.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: September 1, 2009
    Assignee: Flatau & Vanek, LLC
    Inventor: Abraham Flatau
  • Patent number: 7526999
    Abstract: The present disclosure relates to a less-lethal projectile device generally comprising a projectile, such as a rubber-encapsulated metal block, that is mated to a docking base by way of a mounting tube. The projectile may be milled with a cavity located in its rearward section for enabling the projectile to fit onto the mounting tube portion of the docking base through compression. The projectile captures a fired bullet and is propelled along the original path of the bullet. The disclosed system results in a normally lethal weapon being converted into a less-lethal blunt impact system.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: May 5, 2009
    Inventor: Bruce A. Timan
  • Patent number: 7500434
    Abstract: A ring airfoil style paintball comprises a ring airfoil carrying a visible marking agent. The marking agent is located in one more compartments in a nose portion of a body of the ring airfoil, or within one or more containers located in those compartments. The nose portion of the body of the airfoil is configured to rupture upon impacting a target, releasing the marking agent into contact with the target. Cartridges comprising a sabot containing the ring airfoil style paintball are launched from a launcher. The launcher includes a magazine for sequentially delivering cartridges for launch. A stripper associated with the launcher strips the sabot from the ring airfoil paintball, and an ejector ejects the stripped sabot from the launcher.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: March 10, 2009
    Inventors: Abraham Flatau, Chester F. Vanek
  • Patent number: 7430825
    Abstract: The invention is a multi-shot launcher adapted to launch ring airfoil projectiles. Each ring airfoil projectile is coupled to a sabot, the ring airfoil projectile and sabot mounted to a housing in a cartridge form. The cartridge has a length which is less than its diameter. The launcher includes a receiver defining a cartridge receiving area and a tubular passage through which the ring airfoil is launched from a fired cartridge. The launcher includes a trigger mechanism for firing a cartridge. The launcher includes an ejector for ejecting the housing of a spent cartridge from the receiving area and a loader for loading a new cartridge into the receiving area. The cartridge may be loaded from a magazine connected to the receiver.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: October 7, 2008
    Assignee: Flatau & Vanek, LLC
    Inventors: Chester Vanek, Abraham Flatau
  • Patent number: 7380504
    Abstract: A projectile reconfigures in flight from a launch configuration, in which the center of gravity is aft of the center of pressure, to a flight configuration, in which the center of gravity is forward of the center of pressure. The projectile includes a forward portion and an aft portion, and the reconfiguration involves movement of at least part of one of the portions relative to the other portion. The projectile may have an overall substantially conical shape when in the launch configuration. The forward portion may include a substantially conical nose, and a cylindrical central body attached to the nose. In the launch configuration, at least part of the central body may be located within a hollow in a base of the aft portion. The base may be slidable relative to the central body.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: June 3, 2008
    Assignee: Raytheon Company
    Inventor: Richard Dryer
  • Patent number: 7360491
    Abstract: A firearm projectile assembly apparatus disclosed herein comprises: a bullet; a hollow core running completely through the bullet from a front of the bullet subassembly to a rear of the bullet; a core material within at least part of the hollow core; and an expansion-inducing tip integral with the core material, and protruding forward of the front of the bullet; wherein: when the projectile assembly impacts with a target, the expansion-inducing tip drives the core material rearward relative to the hollow core, forcing the bullet to expand radially outwardly. Also disclosed for firearm projectile assembly apparatus is a pressure shield; and a non-discarding attachment of the pressure shield to the bullet, such that after the projectile assembly is fired from a firearm, the pressure shield does not discard from the bullet during the bullet's flight to a target. Also disclosed is a pressure shield comprising: a gas check; and various controlled air spaces.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: April 22, 2008
    Inventor: Craig M. Sanborn
  • Patent number: 7311046
    Abstract: The invention relates to a bullet for infantry ammunition comprising a bullet core (1), a bullet tip (13), and a metal case (2). The aim of the invention is to create a durable connection between the bullet core (1) and the metal case (2). To this end, the metal case (2) is a shell, which is open at the front and which is pulled onto the bullet core (1) from the rear. The bullet tip (13) projects away from the metal case (2), and a constriction (4) is provided on the bullet core (1). The case end (5) that is open at the front projects into this constriction.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: December 25, 2007
    Assignee: Ruag Ammotec GmbH
    Inventors: Heinz Riess, Erich Muskat, Erich Zeiher
  • Patent number: 7252038
    Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.
    Type: Grant
    Filed: July 3, 2006
    Date of Patent: August 7, 2007
    Assignee: Olin Corporation
    Inventors: Douglas D. Olson, Jack D. Dippold, Randant D. Huelsmann
  • Patent number: 7069863
    Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: July 4, 2006
    Assignee: Olin Corporation
    Inventors: Douglas D. Olson, Jack D. Dippold, Randant D. Huelsmann
  • Patent number: 7066092
    Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: June 27, 2006
    Assignee: Olin Corporation
    Inventors: Douglas D. Olson, Jack D. Dippold, Randant D. Huelsmann
  • Patent number: 7036434
    Abstract: A length of a rod of an axial kinetic energy projectile is increased as the projectile flies to the target. The projectile includes a nose, a rear, and a base rod. The base rod has a forward member, a rearward member, and a connection between the forward member and the rearward member which allows the forward member to move axially relative to the rearward member from a contracted position where the rod has a reduced length to an extended position where the rod has an increased length greater than the contracted length. Further, the base rod includes a locking mechanism which axially locks the forward member and the rearward member together when the forward member is moved from the contracted position to the extended position.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: May 2, 2006
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Daniel Vo, Leon Manole, Michael Donadio
  • Patent number: 6823798
    Abstract: Manufacturing processes for articles that are formed from compositions of matter that include powders containing tungsten and at least one binder, as well as articles formed thereby. In some embodiments, the processes include compacting the mixture of powders under a first pressure to yield a desired intermediate structure, then reshaping the structure under a second pressure that is lower than the first pressure to yield the desired article. The compacting steps may include punches and/or dies having different configurations and/or materials of construction. The composition of matter preferably is selected to reflow, or be reshaped, without fragmenting or otherwise disintegrating into discrete particles or particulate. In some embodiments, the compacted intermediate structure and/or final article has an extrusion constant of less than 30,000 psi. In some embodiments, the mixture of powders has an ASTM Hall flowmeter reading for fifty grams through a cone (without tapping) of less than 18 seconds.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: November 30, 2004
    Inventor: Darryl D. Amick
  • Patent number: 6779461
    Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and cover by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: August 24, 2004
    Assignee: Olin Corporation
    Inventors: Douglas D. Olson, Jack D. Dippold, Randant D. Huelsmann
  • Patent number: 6647890
    Abstract: A self-contained round of ammunition has a cartridge casing including a tubular body defining a cylindrical rifled bore and a base threadably attached to the casing body and forming a closure for a breech end of the rifled bore. A sabot which carries a ring airfoil projectile is constrained for limited axial movement within and relative to the bore from a loaded position adjacent the base to a fired position wherein an annular arresting lip integrally formed at the muzzle end of the cartridge body engages an annular abutment surface on the sabot. The lip defines a cylindrical muzzle opening having a diameter smaller than the diameter of the bore and larger than the major diameter of the projectile which may pass freely there through. The sabot in its loaded position cooperates with the base to form a pressure chamber therebetween for receiving gasses of explosion generated by a powder charge contained within the base and in communication with a primer mounted in the base.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: November 18, 2003
    Assignee: Guilford Engineering Associates, Inc.
    Inventor: David Findlay
  • Publication number: 20030097952
    Abstract: A self-contained round of ammunition has a cartridge casing including a tubular body defining a cylindrical rifled bore and a base threadably attached to the casing body and forming a closure for a breech end of the rifled bore. A sabot which carries a ring airfoil projectile is constrained for limited axial movement within and relative to the bore from a loaded position adjacent the base to a fired position wherein an annular arresting lip integrally formed at the muzzle end of the cartridge body engages an annular abutment surface on the sabot. The lip defines a cylindrical muzzle opening having a diameter smaller than the diameter of the bore and larger than the major diameter of the projectile which may pass freely there through. The sabot in its loaded position cooperates with the base to form a pressure chamber therebetween for receiving gasses of explosion generated by a powder charge contained within the base and in communication with a primer mounted in the base.
    Type: Application
    Filed: November 28, 2001
    Publication date: May 29, 2003
    Inventor: David Findlay
  • Patent number: 6499407
    Abstract: A method of packaging a multiplicity of infrared decoy foils into a canister having an aft end and a drive screw extending therein. The present method allows for the controlled dispensing and dispersal of the decoy foils from within the canister and comprises the initial step of assembling the decoy foils into at least one stack. The stack is advanced into the canister, with a preload being applied to at least a portion of the stack through the use of at least one separator plate cooperatively engaged to the drive screw. The preload applied to the decoy foils is of a force greater than or equal to that required to dispense the decoy foils from the canister.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: December 31, 2002
    Assignee: Meggitt Defense Systems
    Inventor: Roger D. Brum
  • Patent number: 6453820
    Abstract: A rotating tubular projectile for increasing the stability of the projectile and the accuracy of the firearm. The rotating tubular projectile includes a cylindrical body having an open first end. The cylindrical body has an axial passageway that extends through the open first end. Additionally, a spiraled airfoil is mounted in the axial passageway of the cylindrical body for impinging a flow of air flowing through the axial passageway. In one embodiment of the present invention the spiraled airfoil rotates the cylindrical body with respect to a longitudinal axis of the cylindrical body as it travels through the barrel and away from the firearm.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: September 24, 2002
    Inventor: Ralph D. Anderson
  • Patent number: 6360667
    Abstract: A projectile for missile intercepting machine guns or the like having a hollow projectile body which includes a front end part having an inside thereof shaved taperingly to make a wall thickness becoming smaller and smaller toward a front end, thereby forming a thin wall part. An outer edge of the front end of the thin wall part is cut to form an acute angle part. The acute angle part of the projectile body is adapted to bite and stick into a flying object or the like to surely shoot down the latter.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: March 26, 2002
    Assignee: Mutsuko Nishimura
    Inventor: Tiyouiti Nisimura
  • Patent number: 6257146
    Abstract: A projectile for firing from an ammunition shell. The projectile includes an elongated hollow body of a resilient material, the hollow body further having a trailing end, a mid-portion, and a leading end, the leading end being closed and the trailing end having an aperture providing access to the interior surface. A propellant is included near the leading end of the hollow body and against the interior surface of the elongated hollow body, so that the interior surface of the hollow body between the trailing end of the hollow body and the mid-portion of the hollow body defines a hollow space. The projectile is adapted for placement within the ammunition shell to allow firing of the projectile from a shotgun or the like.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: July 10, 2001
    Assignee: Stoneco, Inc.
    Inventor: Christopher P. Stonebraker
  • Patent number: 5915694
    Abstract: An aerial decoy comprising a fuselage having forward and aft ends. Disposed within the fuselage are a plurality of decoy discs. Rotatably connected to the forward end of the fuselage is a ram air turbine which is cooperatively engaged to the decoy discs such that the rotation of the ram air turbine facilitates the dispensation of the decoy discs from the aft end of the fuselage.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: June 29, 1999
    Inventor: Roger D. Brum
  • Patent number: 5616884
    Abstract: A propellant system is disclosed which includes a propellant applied to at least one surface of a substrate which is in the form of a strip. The propellant strip is adhesively attached to itself in a configuration which conceals propellant within the configuration and which allows the attached strip to peel away from itself under applied forces thereby resulting in smooth and continuous exposure of propellant for burning. The system is directed to use with ejectable projectiles which are slidably disposed within a canister or casing. The propellant system is interconnected between the projectile and the cannister which houses the projectile. The propellant is urged to peel, and thus expose propellant for burning, as the projectile is ejected from the canister. Alternatively, the propellant is telescoped and covered with a sleeve which peels away as the projectile is ejected.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: April 1, 1997
    Assignee: Thiokol Corporation
    Inventors: Mark A. Solberg, James A. Hartwell
  • Patent number: 5544586
    Abstract: A solid fuel ramjet tubular projectile has a generally tubular body fabried of dense material or suitable hardened material having a bore formed therethrough and having first and second ends. A plurality of partitions divide the bore into a plurality of separate combustion chambers. Each of the combustion chambers extends longitudinally substantially the length of the body. Solid fuel is formed upon the body within each of the combustion cheers. An inlet is formed at the first end of the body, into which air is received. The inlet is configured so as to substantially decelerate air entering the inlet at supersonic velocity to subsonic velocity prior to the air entering the combustion cheers. An outlet, through which combustion gases flow, is formed at the second end of the body. A mixing section is preferably formed intermediate the combustion chamber and the outlet so as to facilitate substantial mixing of the combustion gases from each combustion chamber prior to the combustion gases entering the outlet.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: August 13, 1996
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Joseph Huerta
  • Patent number: 5515787
    Abstract: An improved tubular projectile is described wherein an effective balance has been obtained between the design parameters of reduced mass/reduced aerodynamic drag, flight characteristics, and high energy transfer upon impact. An elongate tubular projectile is provided with an axial passageway, with a central section of generally uniform diameter and flared ends. Slots are cut into the leading end to assist with expansion upon impact. The tubular projectile can be used in sabot type, ammunition, full bore shotgun ammunition, and in conventional case type rifle ammunition.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: May 14, 1996
    Inventor: Derrick Middleton
  • Patent number: 5485787
    Abstract: A gas gun-launched, propulsion-assisted scramjet projectile adapted to be fired from a gun, preferably at velocities greater than Mach 5, includes a body with an external compression section, an internal compression section, a combustion section, a nozzle section, and means for channeling ambient fluid to an engine in one of the sections of the body, the channeling means and the body cooperating with the engine to produce thrust greater than drag when the projectile travels at velocities greater than Mach 5. The projectile further includes a plurality of circumferentially spaced stabilization fins located at the nozzle region of the body and a sabot assembly releasably secured to the rear portion of the body, where the sabot assembly includes a plurality of elements joined together about the body rear portion to form a housing for protecting the body rear portion from explosive gases in the barrel of the gun.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: January 23, 1996
    Assignee: Rockwell International Corporation
    Inventors: Kevin G. Bowcutt, Harry Shortland
  • Patent number: 5381445
    Abstract: A munitions cartridge transmitter capable of emitting an electromagnetic signal after discharge from a cartridge propelling device comprises a signal generator, an electromagnetic signal transmitter coupled to the generator, an antenna coupled to the transmitter, and a hollow cartridge for housing the generator, the transmitter, and the antenna. The transmitter is energized after discharge of the cartridge propelling device by a power source contained in the cartridge.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: January 10, 1995
    Assignee: General Electric Company
    Inventors: John E. Hershey, Menahem Lowy, Lionel M. Levinson, Amer A. Hassan, Richard L. Frey, Kenneth B. Welles, II, Michael Gdula, Robert J. Wojnarowski
  • Patent number: 5303632
    Abstract: A projectile propelling system includes a gun barrel filled with a gaseous propulsive mixture, a projectile having a front cone wall and a rear cone wall, and a driver for initially propelling the projectile in the gun barrel to an initial velocity above the detonation velocity of the gaseous propulsive mixture to produce a shock wave at the front cone wall followed by a detonation wave resulting from the reflection of the shock wave inside the barrel, which detonation wave is applied to the rear cone wall to increase the velocity of the projectile. The front cone wall and rear cone wall of the projectile are such as to create a "mach stem" in the form of a disc normal to the longitudinal axis of the projectile, of sufficiently high pressure and temperature to ensure ignition of the gaseous propulsive mixture.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: April 19, 1994
    Assignee: The State of Israel-Ministry of Defence
    Inventor: Yosef Kivity
  • Patent number: 5275110
    Abstract: A small arms projectile containing a series of vents or apertures in a geometric arrangement such that the projectile's leading edge is capable of penetrating the target without structural failure and depositing the majority of its residual energy in the target. In addition, the design of the body allows the projectile to be spin stabilized when fired from any suitable weapon.
    Type: Grant
    Filed: April 10, 1986
    Date of Patent: January 4, 1994
    Inventor: Abraham Flatau
  • Patent number: 5187325
    Abstract: There is described a cylindrical bullet or projectile having imbedded coaxially in lead or like bullet metal, a internal expansion control insert of copper or like bullet-jacketing metal. The insert has a cylindrical outer surface having a common cylindrical interface with the outer portion of the bullet. The inner surface of the insert has a star-shaped configuration constituted by lead-filled, axially-disposed, V-shaped channels the apices of which are adjacent the outer surface of the insert and the sides of which flare out symmetrically about radii to an intercept with the hollow core of the bullet which extends from a position at or near the base of the bullet as a cylindrical surface to a position at or near the nose of the bullet whereupon it extends on an inverted, frusto-conical surface to the nose-end of the bullet.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: February 16, 1993
    Inventor: Geary L. Garvison
  • Patent number: 5067406
    Abstract: A low-drag supersonic tubular projectile with self-contained thrust augmetion and capable of simultaneous dual internal air flows. One is a centrally located supersonic flow for providing low-drag characteristics, and the other a subsonic flow annularly arranged about the supersonic flow path, comprising a ramjet structure with solid fuel for deriving thrust augmentation enabling the projectile to achieve a terminal velocity which is substantially the same as or exceeding muzzle velocity.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: November 26, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Donald N. Olson, Joseph Huerta
  • Patent number: 5014624
    Abstract: A sabot for use with a spin stabilized projectile comprises a closed front end portion having lines or strips of weakness running along sides of the sabot which meet at a front end surface of the sabot, thereby providing a continuously extending line or region of weakness across the front end surface.Preferably, the sabot front end portion has at least three, desirably four or more, lines or strips of weakness running along the length of the front end portion. These lines or strips may meet at an intersection of lines or strips at the front end surface, but they preferably meet at a front end membrane region.Discarding sabots according to the present invention are especially suitable for use with tubular projectiles. These projectiles may for example be used in training ammunition rounds which are suitable for firing from the UK 30 mm RARDEN (UK Registered Trade Mark) Gun.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: May 14, 1991
    Assignee: Royal Ordnance plc
    Inventors: James E. Baxter, Robert D. Poole
  • Patent number: 4995318
    Abstract: A one piece interally rifled projectile having a cylindrical annular wing surrounding an teardrop-shaped axial core connected to such wing by three helical, canted, tapered vanes. The projectile has a smooth exterior surface, and may be equipped with an explosive charge. As the projectile passes through the air, it rotates so as to provide a stable long-range trajectory.
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: February 26, 1991
    Inventors: Harvey Stidston, Merritte W. Stidston
  • Patent number: 4945836
    Abstract: A high energy rapid expansion bullet for handguns, rifles and the like with greater killing power and protection from excessive gas pressures due to overloading of powder or obstruction in the gun barrel and without over penetration which could endanger bystanders. A standard bullet (e.g., 45 caliber, 9 MM) is provided with a through bore (draft hole) from the tip to the base of the bullet. The inner end of the bore has a conical seat spaced from the central portion of a malleable disc seal surrounded by an annular seat for the rim of the disc.Gases generated by firing of the bullet deform the disc into contact with the conical seat and wedge the base of the bullet outward to seal the gases in the barrel of the gun and pull the rim of the disc inward to aid in separating the disc from the bullet as soon as the bullet leaves the barrel. Excessive gas pressure such as could come from overloading (too much powder), ruptures the disc and vents the gases to the atmosphere.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: August 7, 1990
    Inventor: Daniel J. Michaels
  • Patent number: 4939997
    Abstract: Subcaliber ammunition, especially for utilization with cannon which are mounted on board aircraft, including a subcaliber projectile core and a propulsion mechanism. The propulsion mechanism is constructed as an inherently stable secondary projectile which flies at a readily estimatable trajectory. The propulsion mechanism continues to fly in the manner of a projectile subsequent to the separation thereof from the projectile core.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: July 10, 1990
    Assignee: Mauser-Werke Oberndorf GmbH
    Inventor: Dietrich Hoffman
  • Patent number: 4936218
    Abstract: A tubular projectile having a venturi throat configuration is disposed with rifling on the interior wall surfaces providing a highly aerodynamic projectile which can be used in smooth bore barrel artillery.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: June 26, 1990
    Inventor: William B. Wosenitz
  • Patent number: 4932306
    Abstract: A projectile is accelerated to hypersonic velocity in an initially closed barrel of a diameter considerably larger than the projectile diameter which is filled with a compressed fuel-oxidizer mixture. The projectile comprises a conical nose portion, an intermediate portion formed to generate oblique detonation waves, and a tapering tail portion provided with several radial vanes. The projectile is propelled by an initiator gun at supersonic speed through one of the intitially closed ends in the barrel, were the detonation waves cause detonation and combustion of the fuel-oxidizer mixture. The detonation results in a high pressure increase to the rear of the projectile accelerating it along the barrel and shooting it at the reached hypersonic speed through the other, initially closed end of the barrel into the open.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: June 12, 1990
    Inventor: Josef Rom