Heat, Friction, Or Chemical Primers Or Ignitors Patents (Class 102/205)
  • Patent number: 10288390
    Abstract: A concealed amalgamated neutralizer covertly combines neutralizer material comprised of various combinations of inert materials such as calcium carbonate or silicates with common explosive material for the prevention of malicious use of the explosive material in improvised explosive devices. The concealed amalgamated neutralizer device may vary in shape, size, and color and is therefore adaptable to varying methods of containment typified by common pyrotechnic products. The neutralizer material mimics the explosive material of the pyrotechnic products without detection. Upon disassembly of a concealed amalgamated neutralizer device, the neutralizer material is mixed with and neutralizes the explosive material rendering the explosive material useless as a component for an improvised explosive device.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: May 14, 2019
    Assignee: I P Creations Limited
    Inventors: Daniel Hill Meeker, Benjamin John Green
  • Patent number: 9714199
    Abstract: A concealed amalgamated neutralizer covertly combines neutralizer material comprised of various combinations of inert materials such as calcium carbonate or silicates with common explosive material for the prevention of malicious use of the explosive material in improvised explosive devices. The concealed amalgamated neutralizer device may vary in shape, size, and color and is therefore adaptable to varying methods of containment typified by common pyrotechnic products. The neutralizer material mimics the explosive material of the pyrotechnic products without detection. Upon disassembly of a concealed amalgamated neutralizer device, the neutralizer material is mixed with and neutralizes the explosive material rendering the explosive material useless as a component for an improvised explosive device.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: July 25, 2017
    Assignee: I P CREATIONS LIMITED
    Inventors: Daniel Hill Meeker, Benjamin John Green
  • Patent number: 9481614
    Abstract: An energetic material comprising an elemental fuel, an oxidizer or other element, and a carbon nanofiller or carbon fiber rods, where the carbon nanofiller or carbon fiber rods are substantially homogeneously dispersed in the energetic material. Methods of tailoring the electrostatic discharge sensitivity of an energetic material are also disclosed.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: November 1, 2016
    Assignees: Battelle Energy Alliance, LLC, Texas Tech University System
    Inventors: Michael A. Daniels, Ronald J. Heaps, Ronald S. Wallace, Michelle L. Pantoya, Eric S. Collins
  • Patent number: 9360288
    Abstract: A fire ignition flare is described. The fire ignition flare includes an elongated, combustible body with a fuse extending longitudinally through the combustible body. A first end of the combustible body can include a concave portion. The combustible body can be bonded to the fuse along a bonded portion, and the fuse can extend from the concave portion.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 7, 2016
    Assignee: FIREPOINT PRODUCTS, INC.
    Inventors: Neil Zierden, Rhonda Zierden
  • Patent number: 9091517
    Abstract: A munition according to a preferred embodiment can include a detonator system having a detonator that is selectively coupled to a microwave source that functions to selectively prime, activate, initiate, and/or sensitize an insensitive explosive material for detonation. The preferred detonator can include an explosive cavity having a barrier within which an insensitive explosive material is disposed and a waveguide coupled to the explosive cavity. The preferred system can further include a microwave source coupled to the waveguide such that microwaves enter the explosive cavity and impinge on the insensitive explosive material to sensitize the explosive material for detonation. In use the preferred embodiments permit the deployment and use of munitions that are maintained in an insensitive state until the actual time of use, thereby substantially preventing unauthorized or unintended detonation thereof.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: July 28, 2015
    Assignee: LOS ALAMOS NATIONAL SECURITY, LLC
    Inventor: William Leroy Perry, III
  • Patent number: 8695504
    Abstract: An activation unit (1, 10) for munitions-free decoys, active masses or active bodies (3) is characterized by an ejector tube (2) and a high-powered heater element (4) arranged around the ejector tube (2, 12), wherein the heater element is made up of at least one heating wire (6), provided with electrical current by a regulator unit. Each heating wire (6) is enclosed in a sleeve (7) and embedded in at least one heat-loss minimizing material. The active body (3) passing through the activation unit (1,10) directly or indirectly contacts with the individual elements (4) of the activation unit (1, 10). Thermal energy is transmitted to the active body (3) from the heating wires (6), which ignites at the touching or contact point.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: April 15, 2014
    Assignee: Rheinmetall Waffe Munition GmbH
    Inventors: Sven Guth, Heribert Eglauer, Frank Oliver, Florian Huber, Nenad Prelic
  • Publication number: 20140013982
    Abstract: A method and corresponding devices employ a mixture of at least a metal oxide and a metal which undergoes an exothermic chemical reaction. Microwave radiation is applied to the mixture so as to generate a localized hot spot in the mixture, thereby initiating the exothermic chemical reaction. The use of localized microwave radiation facilitates low power and portable implementations. Devices and techniques for cutting, drilling, welding, material synthesis, generating thrust, and mechanical power and motion are also disclosed.
    Type: Application
    Filed: March 1, 2012
    Publication date: January 16, 2014
    Inventors: Yehuda Meir, Eli Jerby
  • Patent number: 8607702
    Abstract: A primary ignition system for large caliber ammunition which ignition system is less sensitive to unwanted ignition by conventional temperatures or conventional electrical signals or by stray electrostatic voltage electrical signals, or stray RF frequency signals. This ignition primer device begins the ignition sequence with applying a high voltage electrical pulse to a non-energetic element, specially coated with nano sized aluminum particles, to release and ionized discharge that generate a plasma in order to ignite an environmentally friendly ignition composition mix. The ignition composition is also comprised of aluminum water based nano material combined with oxidizer and binder. In the device's primer head assembly is a brass ignition pin pressed into a (non-electrically conductive) Torlon® material cup. The non-conductive Torlon® material acts as an insulator for the entire system.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: December 17, 2013
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Michael J. Donadio, Harry L. Moore, Jr., Hardev Singh, Matthew Sussmann
  • Patent number: 8511229
    Abstract: A microcavity structure. In an illustrative embodiment, the microcavity structure includes a first substrate, which has a region of interest. A second substrate with a perforation therein is bonded to the first substrate. The perforation coincides with the region of interest. In a specific embodiment, the first substrate is implemented via a Printed Circuit Board (PCB). The region of interest includes one or more circuit components, including an actuator, such as a bridgewire, thereon or therein. A smoothing layer is included between the PCB and the actuator. A bonding gasket adheres the first substrate to the second substrate. The perforation accommodates energetic material that is selectively ignited via the actuator.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: August 20, 2013
    Inventors: Amish Desai, Bob Melendes, Ming Lu, Brian Fuchs, Stephen Chau
  • Publication number: 20120266770
    Abstract: A method of forming a device on a substrate comprising creating a depository and at least one attached capillary; the depository being of millimeter scale; providing a liquid containing particles in the range 1 nanometer to 1 millimeter; depositing into the depository the liquid containing particles which flows into at least one capillary by capillary action; evaporating the liquid such that the particles form an agglomerate beginning at the end of the at least one capillary with a substantially uniform distribution of the particles within the agglomerate; which is used to form a device. A microelectronic integrated circuit device comprising a substrate; a depository coupled to said substrate, the depository being formed by at least one wall adjacent to the substrate; at least one capillary channel coupled to at least one depository that is formed by walls adapted to be filled with a liquid (by capillary action) comprising nanoparticles.
    Type: Application
    Filed: May 18, 2012
    Publication date: October 25, 2012
    Applicant: U.S. Government as represented by the Secretary of the Army
    Inventors: Gabriel L. Smith, Sarah Bedair
  • Patent number: 8245640
    Abstract: Molten droplets of a metal fuel, such as aluminum, are dispersed into air or water for a reaction releasing energy for military or other purposes. In one warhead embodiment, a cylinder of solid metal is disposed within a ceramic heat insulator; heaters of thermite-like material are embedded in the metal; and an explosive dispersing charge is disposed around or at one end of the cylinder. On activation, the heaters are ignited to melt the metal, and the charge then detonated to disperse droplets of the molten metal. In a related embodiment, the metal and heaters are within a containment having an atomizing nozzle at one end and, oppositely of the metal from the nozzle, a piston and gas generator. When the metal is melted, the gas generator is activated to expel molten metal droplets from the nozzle.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: August 21, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gerrit T. Sutherland, Phillip J. Miller, Harold W. Sandusky
  • Patent number: 8181576
    Abstract: A projectile for safe standoff destruction of explosive devices. The projectile's casing encloses a chamber containing combustible material located opposite a roughened surface on the chamber. The combustible material is mounted so upon the projectile impacting the explosive device, the combustible material flies onto the roughened surface, heating the material by shear forces and igniting the material. This creates pressure bursting the chamber, injecting combustion gases into the explosive fill within the device, thereby igniting the fill locally at the impact, and along cracks in the fill. This arrangement prevents a coherent detonation wavefront from forming within the fill, and a slower burn of the fill, whereby a rifleman has little chance of receiving a concussive shock, or shrapnel, from the device.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: May 22, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Brian T. Amato, Steven Kim, Gerald Laib, Carl Gotzmer
  • Publication number: 20110214582
    Abstract: A sub-caliber bullet with an aerodynamic shape has long-range accuracy due to a high muzzle velocity and reduced time of flight to a target. The bullet has a forward portion, a mid-portion and an aft portion. The forward portion has a density in excess of 10/cm3 while the mid-portion has a lower density. The bullet has an aspect ratio of at least 5:1 and a diameter, d, that satisfies a Power Law equation: d=D*(x/L)n where D is a maximum bullet diameter, L is the length, x is a distance rearward from a nose of the bullet and n is a Power Law exponent that is between 0.5 and 0.75. In some embodiments, a blind bore extends into the mid-portion from the aft portion and a sustainer propellant within the blind bore ignites as the bullet exits a gun muzzle to provide a velocity boost and to overcome aerodynamic drag.
    Type: Application
    Filed: March 4, 2010
    Publication date: September 8, 2011
    Inventor: Alan Z. Glasser
  • Patent number: 7987792
    Abstract: A gas generator has an igniter and a compressed gas container which contains a first filling gas and has an outflow opening that is closed by a first bursting diaphragm. Upon activation of the gas generator the igniter produces a shock wave which runs at least in part through the compressed gas container before destroying the first bursting diaphragm. The compressed gas container is filled with a mixture of the first filling gas and at least one second substance having a molar mass higher than that of helium, the proportion of the second substance being between 1 and 13 mole percent of the total filling quantity or reaching, at maximum, the total mass of the first filling gas, and the first filling gas being helium, hydrogen, or a mixture of the two gases.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: August 2, 2011
    Assignee: TRW Airbag Systems GmbH
    Inventor: Christian Jung
  • Publication number: 20100237197
    Abstract: An ejection delay system, apparatus and/or method including an electronic ejection delay system having an ignition device; a power source connected to the ignition device; and, a flight parameter sensor switch electrically connected to the power source to initiate the provision of power from the power source to the ignition device; the electronic ejection delay system being disposed in some implementations in a housing system including a housing; a forward closure for closing the top end of the housing; and, an aft closure for closing the aft end of the housing. Also disclosed is a method for ejecting a rocket recovery system in flight; including sensing a parameter associated with flight; and, initiating deployment of a recovery system.
    Type: Application
    Filed: July 17, 2006
    Publication date: September 23, 2010
    Inventors: Gary C. Rosenfield, Robert A. Rosenfield
  • Patent number: 7762190
    Abstract: A MEMS mechanical initiator having a striker arm extending from a striker body. The tip of the striker arm is adjacent to, but does not touch, the side of a microdetonator. A cocking and release mechanism moves the striker body such that the striker arm pulls away from the side of the microdetonator against the action of a set of springs connected to the striker body. Thereafter the cocking and release mechanism releases the striker body such that the tip of the striker arm swipes the side of the microdetonator causing initiation thereof.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: July 27, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gerald Laib, Daniel Jean, David Olson, Michael Beggans
  • Publication number: 20100058945
    Abstract: An electrophoresis process is used to form a more efficient and controllable triggering mechanism for solid explosives ignited through the application of electromagnetic energy. Electrophoresis is used to overcome the Van der Waals forces that hold the nanostructures together to disperse and align the nanostructures to the field lines of an applied electric field in-situ in the explosive or ex-situ in a pre-preg layer (or layers) that is then introduced to the explosive. The in-situ process requires fewer steps but is more constrained in the trigger structures that can be formed and care must be taken not to detonate the explosive during the electrophoresis process. The ex-situ process requires additional steps but provides greater flexibility to create trigger structures and the electrophoresis process is performed on a lower viscosity non-explosive material.
    Type: Application
    Filed: March 2, 2009
    Publication date: March 11, 2010
    Inventor: Timothy J. Imholt
  • Publication number: 20100050898
    Abstract: In accordance with an embodiment of the invention, a submunition is contemplated having a submunition body, an explosive payload housed within said submunition body and an elongated delay member housed within the submunition body, the elongated delay member coated with at least one reactive material that provides a controlled time delay between submunition impact and detonation of the explosive payload. The submunition may also comprise an elongated pendulum having a hollow core sized to receive said elongated delay member, the elongated pendulum adapted to be movable between a locked position that mitigates likelihood of inadvertent detonation of the explosive payload and an unlocked position that enables detonation of the explosive payload.
    Type: Application
    Filed: August 31, 2009
    Publication date: March 4, 2010
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: Antonio Paulic, Lance Benedict
  • Patent number: 7597046
    Abstract: A method of making a thin film explosive detonator includes forming a substrate layer; depositing a metal layer in situ on the substrate layer; and reacting the metal layer to form a primary explosive layer. The method and apparatus formed thereby integrates fabrication of a micro-detonator in a monolithic MEMS structure using “in-situ” production of the explosive material within the apparatus, in sizes with linear dimensions below about 1 mm. The method is applicable to high-volume low-cost manufacturing of MEMS safety-and-arming devices. The apparatus can be initiated either electrically or mechanically at either a single point or multiple points, using energies of less than about 1 mJ.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: October 6, 2009
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventor: Gerald Laib
  • Patent number: 7587978
    Abstract: An initiator is provided for a munitions device that is intended to strike a target substantially along a trajectory direction and contains an explosive within a case. The initiator includes a sleeve, first and second anvils and an initiation pellet disposed between the anvils. The sleeve is disposed within the case and adjacent to the explosive, and defines an initiator interior aligned substantially parallel to the trajectory direction. The sleeve includes one or more orifices that extend therethrough between the explosive and the interior, the orifices being disposed adjacent to the pellet. The pellet is composed of a reactive material that chemically responds as a non-explosive to kinetic and thermal stimuli.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: September 15, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Willis Mock, Jr., Bradley L. Hanna, William H. Holt
  • Publication number: 20090183648
    Abstract: An apparatus includes a heat-to-detonation transition manifold, a heat pipe connected to the transition manifold, a linear shaped charge, and a transfer line connecting the heat-to-detonation transition manifold and the linear shaped charge. An apparatus includes a thermally-activated pyrotechnic train and a linear shaped charge coupled with the pyrotechnic train. A method includes initiating a deflagrating material at a predetermined temperature or within a predetermined range of temperatures, initiating a detonating material with the deflagrating material, and initiating a linear shaped charge with the detonated material.
    Type: Application
    Filed: March 30, 2009
    Publication date: July 23, 2009
    Applicant: Lockheed Martin Corporation
    Inventors: Anthony T. Skinner, Michael L. Fortner, Marcus J. Dill, David N. Zichichi, Lamar R. Lunsford
  • Patent number: 7363860
    Abstract: Methods and apparatus for detonating explosives or igniting flammables are disclosed. According to some embodiments of the invention, initiators include an initiating component holding an exploding bridgewire (EBW) or an exploding foil initiator (EFI) and a flammable component housing thermite. An end of the flammable component mates with a corresponding end of the initiating component. A method of initiating the explosives or flammables includes connecting the two components to assemble the initiator, disposing the initiator proximate the explosives or flammables, and activating the initiator to cause ignition of the thermite that then initiates the explosives or flammables. Additionally, a non-explosive kit for the initiator includes the two components with the EBW or EFI initially spaced from the thermite within the flammable component to make the initiator disarmed until final assembly thereof.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: April 29, 2008
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Paul Wilson, Kevin L. Gray
  • Publication number: 20080047449
    Abstract: Methods and apparatus for detonating explosives or igniting flammables are disclosed. According to some embodiments of the invention, initiators include an initiating component holding an exploding bridgewire (EBW) or an exploding foil initiator (EFI) and a flammable component housing thermite. An end of the flammable component mates with a corresponding end of the initiating component. A method of initiating the explosives or flammables includes connecting the two components to assemble the initiator, disposing the initiator proximate the explosives or flammables, and activating the initiator to cause ignition of the thermite that then initiates the explosives or flammables. Additionally, a non-explosive kit for the initiator includes the two components with the EBW or EFI initially spaced from the thermite within the flammable component to make the initiator disarmed until final assembly thereof.
    Type: Application
    Filed: November 30, 2005
    Publication date: February 28, 2008
    Inventors: Paul Wilson, Kevin L. Gray
  • Publication number: 20070245918
    Abstract: An ignition unit for a fire extinguishing assembly has an ignition unit housing with a firing pin disposed within the housing. A spring is coupled to the firing pin, and a restraining device holds the pin in place in the housing, A formed eutectic holds the restraining device in place such that when the eutectic deforms, the firing pin is released and moved by the spring in a desired direction.
    Type: Application
    Filed: April 10, 2006
    Publication date: October 25, 2007
    Inventor: Marc V. Gross
  • Patent number: 7073447
    Abstract: An ETC igniter and compatible electrical connector for enabling an ETC gun to be used in a battlefield setting in close proximity with personnel and sensitive electronic equipment. This is accomplished by providing a current path to and from the igniter that is electrically isolated from all other portions of the gun. The connector and igniter are adapted to be capable of withstanding the high connection forces necessary to prevent arcing and the extreme stresses imposed during firing of the gun.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: July 11, 2006
    Assignee: BAE Systems Land & Armaments L.P.
    Inventors: Michael R. Triviski, David C. Cook, Alan R. Sunnarborg, Reed A. McPeak
  • Patent number: 7059250
    Abstract: Molten droplets of a metal fuel, such as aluminum, are dispersed into air or water for a reaction releasing energy for military or other purposes. In one warhead embodiment, a cylinder of solid metal is disposed within a ceramic heat insulator; heaters of thermite-like material are embedded in the metal; and an explosive dispersing charge is disposed around or at one end of the cylinder. On activation, the heaters are ignited to melt the metal, and the charge then detonated to disperse droplets of the molten metal. In a related embodiment, the metal and heaters are within a containment having an atomizing nozzle at one end and, oppositely of the metal from the nozzle, a piston and gas generator. When the metal is melted, the gas generator is activated to expel molten metal droplets from the nozzle.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: June 13, 2006
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gerrit T. Sutherland, Phillip J. Miller, Harold W. Sandusky
  • Patent number: 7021217
    Abstract: A versatile cavity actuator. The versatile cavity actuator includes a cavity having one or more polymer-based sidewalls. An energetic material is disposed therein. A heater is disposed on or within the cavity. In a specific embodiment, the cavity includes a thermally insulating base positioned beneath the heater, which is positioned near the bottom of the cavity. The polymer-based sidewalls are constructed from a photo-curable epoxy, which is disposed on a substrate via microelectromechanical processes. The sidewalls are angled or parabolic and are constructed via a low-temperature lithographic spin process compatible with post integrated circuit processing.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: April 4, 2006
    Assignee: Tanner Research, Inc.
    Inventors: Amish Desai, Ravi Kant Verma, Massimo Antonio Sivilotti
  • Patent number: 6994030
    Abstract: The technical field of the invention is that of microactuators designed for mechanical, chemical, electrical or thermal functions in microsystems, for microelectronic applications such as chips, or biomedical applications such as cards incorporating microfluidics. The invention concerns a microactuator comprising a chamber machined in a solid support and containing a pyrotechnic charge. Said microactuator is essentially characterised in that the chamber is partly delimited by a deformable membrane, such that the gases emitted by combustion of the pyrotechnic charge enable to increase the volume of said chamber by deforming said membrane while maintaining intact the solid walls of the chamber.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: February 7, 2006
    Assignee: SNPE Materlaux Energetiques
    Inventors: Christian Perut, Denis Roller
  • Patent number: 6941868
    Abstract: A single increment initiator charge for use in an inflatable restraint system and a method of preparing the single increment initiator charge are provided. The single increment initiator charge includes a homogeneous blend of zirconium, an oxidizer such as potassium perchlorate, and a combustion enhancer such as titanium hydride in an amount effective to result in the single increment initiator charge being effective to ignite an associated pyrotechnic charge. The single increment initiator charge may be formed by preparing a homogeneous blend such as by dry-blending the constituents or by mixing the constituents with a solvent such as an alcohol to form a slurry, loading the homogeneous blend into a charge holder and compressing the homogeneous blend.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: September 13, 2005
    Assignee: Autoliv ASP, Inc.
    Inventor: John Herget
  • Patent number: 6845715
    Abstract: An explosion simulator including a chamber at least partially filled with a pyrotechnic material, the chamber being formed with a plurality of holes arranged for fluid products of an explosion of the pyrotechnic material to pass therethrough, and a delaying detonator adapted to detonate the pyrotechnic material, the detonator being adapted to delay onset of the explosion of the pyrotechnic material a period of time after actuation of the detonator.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: January 25, 2005
    Inventor: Arie Sansolo
  • Publication number: 20040226472
    Abstract: The present invention provides an initiator assembly in which a metallic collar and an electric type initiator are combined securely to block a moisture penetration into the inside of the gas generator, thereby obtaining operation reliability of the gas generator.
    Type: Application
    Filed: November 21, 2002
    Publication date: November 18, 2004
    Inventor: Shingo Oda
  • Publication number: 20040226473
    Abstract: A high energy, stable, electrically activated explosive replacement initiator comprises at least a mixture of a metal, a highly-halogenated polymer moiety (HHPM) and a reduced halogen (or non-) halogenated polymer moiety (RHPM). These replacements can be used as detonators, initiators, or explosive devices alone or with other explosive systems and materials. The two polymer moieties, the HHPM and RHPM, may be provided in the following manners and generally in the following proportions. The halogen on the polymer preferably comprises chlorine or fluorine, preferably fluorine, and preferably at least 50% of halogen atoms in the polymer comprise fluorine. The fluorine is preferably provided on the polymer backbone (as in polymers formed from ethylenically unsaturated monomeric units such as tetrafluoroethylene, trifluoromonochloroethylene, difluorodichloroethylene, trichloromonofluoroethylene, trifluroethylene, and the like).
    Type: Application
    Filed: May 12, 2004
    Publication date: November 18, 2004
    Inventor: David Davison
  • Patent number: 6805055
    Abstract: The invention comprised a device and method for firing firearm ammunition using a plasma torch generator. In a particular embodiment, the device relates to the control or management of the rate of fire and number of rounds fired in a burst firing mode for automatic firearms. The device can be incorporated into firearms of a variety of sizes and configurations to provide precise control of the rate of fire. The device and method can be applied to conventional mechanical primer ammunition or used without the need for a primer, particularly in field artillery, aircarft, and watercraft.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: October 19, 2004
    Assignee: Gamma Recherches & Technologies Patent SA
    Inventors: Jan Henrik Jebsen, Gerard Aknine
  • Patent number: 6749702
    Abstract: The present invention relates to a low temperature autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: June 15, 2004
    Assignee: Talley Defense Systems, Inc.
    Inventors: Gregory D. Knowlton, Christopher P. Ludwig
  • Patent number: 6736068
    Abstract: The invention relates to an initiating element for use in a detonator to cause a base charge arranged in the detonator, to detonate. The initiating element comprises an ignitable initiating charge which upon ignition generates combustion gases by means of which the base charge is intended to be caused to detonate. The initiating element comprises a compression means which is arranged to be acted upon by said combustion gases to be moved towards the base charge for compression of the same. The invention further relates to a method of igniting a compressed base charge in a detonator, the base charge being further compressed during an initiation phase to increased density. In addition, the invention relates to a detonator provided with a base charge which at a moment of detonation has increased density.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: May 18, 2004
    Assignee: Dyno Nobel Sweden AB
    Inventors: Viktor Dumenko, Ulf Borgström, Roger Holmberg
  • Patent number: 6651563
    Abstract: An ignition element consists of a combination of first and second ignition components. The first ignition component contains at least one primer, at least on heat-conducting additive selected from the group consisting of zirconium, aluminum, titanium, ferrotitanium, zirconium boride, zirconium hydride and mixtures thereof, at least one oxidant and a binder. The second ignition component contains at least one ingredient that produces hot re4action particles, an oxidant, and a binder.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: November 25, 2003
    Assignee: Dynamit Nobel Artiengesellschaft
    Inventors: Gunther Faber, Helmut Zollner
  • Publication number: 20030164106
    Abstract: The present invention relates to a bridge igniter 1 having: a resistance layer 3 which has a given electrical resistance and which can be heated by an electrical current; an electrical insulating layer 4 that is disposed on the resistance layer 3 and has a given thermal conductivity; a reactive layer that is disposed on the insulating layer, the insulating layer 4 transmitting the heat that is produced in the resistance layer 3 to the reactive layer 5, thereby causing the latter to undergo an exothermic reaction; and a pyrotechnic layer 7 that is disposed on or above the reactive layer 5 and that may be set off by the exothermic reaction of the reactive layer 5.
    Type: Application
    Filed: April 15, 2003
    Publication date: September 4, 2003
    Inventors: Roland Mueller-Fiedler, Winfried Bernhard, Ulrich Kunz
  • Patent number: 6591753
    Abstract: A propellant device of consisting of a compact charge and a firing system for pipe weapons or ballistic drives is proposed. At least one electromagnetic radiation absorbing medium, e.g. carbon black, is dispersed in the compact charge and can be activated by means of a firing system emitting electromagnetic radiation. The compact charge is thereby disintergrated in fragments through triggering of the firing system and the fragments are accelerated into the gas volume produced during burning of the compact charge. The inventive propellant device avoids the use of chemical firing as well as mechanical firing means. Moreover, fragmentation of the compact charge permits maintenance of the produced maximum pressure over a longer period of time to impart a higher muzzle velocity to an object to be accelerated, e.g. a projectile, a rocket or the like.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: July 15, 2003
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Helmut Schmid, Norbert Eisenreich, Gesa Langer, Andreas Koleczko, Rudolf Emmerich, Peter Elsner, Helfried Urban
  • Patent number: 6539869
    Abstract: A non-detonating heat transfer initiator. A representative heat transfer initiator is in the form of a heat transfer control medium, having a heat input portion and a heat output portion, and a non-detonating autoignition material, having an autoignition temperature, in thermal contact with the heat output portion. When heat is applied to the heat input portion, a transfer of heat through the heat transfer control medium to the heat output portion results, heating the heat output portion, such that, upon application of a sufficient amount of heat to the heat input portion, the heat output portion is heated to the autoignition temperature of the non-detonating autoignition material, igniting the non-detonating autoignition material ignites, thus producing a non-detonating thermal output.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: April 1, 2003
    Assignee: Talley Defense Systems, Inc.
    Inventors: Gregory D. Knowlton, Christian Salafia, Bruce B. Anderson, Theodore B. Gortemoller
  • Patent number: 6502343
    Abstract: An emergency rescue device is provided which includes a plurality of launching tubes, a plurality of upper and lower fixing pieces, a plurality of upper and lower connecting moving pieces, a plurality of groups of tenons and spring units, a lighting device, a plurality of supporting poles, a plurality of upper and lower uniting pieces, a plurality of upper and lower spring holder portions, an outer cylinder and a lid, etc. A flare used in the emergency rescue device comprises a far upper end loaded with signal powders; a second section loaded with pushing powders, below which lighting powders are loaded and are partially exposed to outside the circumference of the flare body; and a far lower end with a tail wing. The emergency rescue device of the present invention allows the flare to be fired immediately and consecutively at the sky for SOS signaling, enabling an immediate rescue for victims.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: January 7, 2003
    Inventor: Joung Young Cheng
  • Publication number: 20020092438
    Abstract: A cartridge primer which utilizes an explosive that can be designed to become inactive in a predetermined period of time: a limited-life primer. The explosive or combustible material of the primer is an inorganic reactive multilayer (RML). The reaction products of the RML are sub-micron grains of non-corrosive inorganic compounds that would have no harmful effects on firearms or cartridge cases. Unlike use of primers containing lead components, primers utilizing RML's would not present a hazard to the environment. The sensitivity of an RML is determined by the physical structure and the stored interfacial energy. The sensitivity lowers with time due to a decrease in interfacial energy resulting from interdiffusion of the elemental layers. Time-dependent interdiffusion is predictable, thereby enabling the functional lifetime of an RML primer to be predetermined by the initial thickness and materials selection of the reacting layers.
    Type: Application
    Filed: October 19, 2001
    Publication date: July 18, 2002
    Applicant: The Regents of the University of California
    Inventors: Daniel M. Makowiecki, Robert S. Rosen
  • Patent number: 6340175
    Abstract: An air bag igniter including a foamed material, and an air bag assembly containing the same are disclosed. The foamed material is formed from a composition including, as ingredients, a polyfunctional isocyanate, a polymeric binder having a plurality of hydroxyl groups which are reactive with the polyfunctional isocyanate, a fuel source, an oxidizer, and a foaming agent which may or may not be retained in the foamed material.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: January 22, 2002
    Assignee: Alliant Techsystems, Inc.
    Inventors: Craig D. Hughes, Daniel W. Doll, Gary K. Lund, Dean M. Lester
  • Patent number: 6298784
    Abstract: A heat transfer delay for providing a delay time in propellant, pyrotechnic, and explosive devices, and a method of delaying production of a non-detonating thermal output with the heat transfer delay. A representative delay is in the form of a housing having a first heat source cavity, a second heat source cavity, and a heat transfer cavity connecting the first and second heat source cavities. A pyrotechnic heat source is placed in thermal contact with the first heat source cavity, and a non-detonating autoignition material is placed in thermal contact with the second heat source cavity.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: October 9, 2001
    Assignee: Talley Defense Systems, Inc.
    Inventors: Gregory D. Knowlton, Bruce B. Anderson, Theodore B. Gortemoller
  • Patent number: 6224099
    Abstract: The present invention relates to an igniter composition which is capable of being extruded to yield a robust igniter extrudate. The composition is particularly useful in the form of an igniter stick or other selected geometry for use in supplemental safety restraint systems designed for use such as in vehicles, ground or airborne, having such systems.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: May 1, 2001
    Assignee: Cordant Technologies Inc.
    Inventors: Daniel B. Nielson, Gary K. Lund, Reed J. Blau
  • Patent number: 6221187
    Abstract: The present invention relates to a low temperature autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: April 24, 2001
    Assignee: Talley Defense Systems, Inc.
    Inventors: Gregory D. Knowlton, Christopher P. Ludwig
  • Patent number: 6101947
    Abstract: The present invention relates to a low temperature autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: August 15, 2000
    Assignee: Talley Defense Systems, Inc.
    Inventors: Gregory D. Knowlton, Christopher P. Ludwig
  • Patent number: 6053108
    Abstract: A caseless propellant charge structure and sensitizer structure for safe ignition and cleaner gas generation. The sensitizer structure is comprised of a sensitizer material which is encapsulated in a protective binder material. The protective binder layer is broken during desired ignition in the combustion chamber. Meanwhile the propellant structure comprises an oxidizer rich layer which also contains fuel and a propellant layer. The oxidizer rich layer is adjacent the sensitizer structure in the strip assembly. The oxidizer rich layer allows ignition while foregoing the need for high concentration of oxidizer throughout the propellant structure thus reducing the mass of solids generated from the oxidizer combustion.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: April 25, 2000
    Assignee: Senco Products, Inc.
    Inventor: David L. Remerowski
  • Patent number: 5993201
    Abstract: A photographic flash lamp having a closed, at least partially transparent capsule. A combustible material within an enclosed region of the capsule generates a flash upon ignition. Ignition is provided by a frictionally ignited composition within the enclosed region and an ignitor to frictionally engage with the composition. A frictional ignitor assembly extends between an interior and exterior of the enclosed region and carries one of the composition or ignitor. Movement of an exterior end of the ignitor assembly causes the frictional ignitor and frictionally ignited composition to frictionally engage one another resulting in flash generation. Particularly with a sliding piston arrangement for engaging the ignitor and frictionally ignited composition, ignition can be accomplished with very low cost components such as a spring while at the same time, combustion gases are trapped within the closed envelope.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: November 30, 1999
    Assignee: Eastman Kodak Company
    Inventors: Warren Green, Richard A. Colleluori
  • Patent number: 5847310
    Abstract: A squib for a gas generator, comprising a magazine which is formed with a squib cup and a squib plug and is sealed; a pair of electrode lead pins penetrating through said squib plug to said magazine; a bearing wire connected to ends of said electrode lead pins; and an explosive contained in said magazine, said explosive composition containing a spontaneous firing explosive composition comprising carbohydrates, oxohalogenates and metal oxides.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: December 8, 1998
    Assignee: Nippon Kayaku Kabushiki-Kaisha
    Inventors: Ken-ichi Nagahashi, Yuji Ito, Ayumu Kimura, Masaharu Murakami, Eishi Sato, Michihisa Taguchi
  • Patent number: 5831207
    Abstract: An autoigniting composition comprising lead thiocyanate Pb(SCN).sub.2 as the fuel, a chlorate as the oxidizer and optionally, a binder and/or a flow agent/thickener are disclosed for use in a vehicle occupant restraint system. The autoignition composition undergoes rapid autoignition at temperatures from approximately 190.degree. to 220.degree. C. thereby allowing the use of aluminum for the gas generator housing. The autoignition compositions of the present invention are safely manufactured by wet blending and may be installed via automation to the interior of the inflator housing. When aluminum housings are used, a barrier material is used to prevent corrosion of the aluminum by the autoignition composition. Optionally the dried autoignition material is coated with a protective substance to prevent water absorption and mechanic abrasion.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: November 3, 1998
    Assignee: Breed Automotive Technology, Inc.
    Inventors: Donald Edwin Seeger, John Herman Adams