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Class 102/205 - Heat, friction, or chemical primers or ignitors


Subclass of Class 102 - Ammunition and explosives
Definition: Subject matter comprising heating, friction, or chemical
No. of patents: 84
Last issue date: 07/27/2010


1      
NumberTitleIssue Date
7762190MEMS mechanical initiator for a microdetonator
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 f...
07/27/2010
7363860Non-explosive two component initiator
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 flammabl...
04/29/2008
7361412Nanostructured soldered or brazed joints made with reactive multilayer foils
Self-propagating formation reactions in nanostructured multilayer foils provide rapid bursts of heat at room temperature and therefore can act as local heat sources to melt solder or braze layers and join materials. This reactive joining method provides very localiz...
04/22/2008
7278354Shock initiation devices including reactive multilayer structures
The invention provides shock initiation devices comprising multilayer structures with constituent layers that undergo an exothermic self-propagating reaction once initiated by shock. The multilayer structures may be used as components in shaped charges, EFP devices,...
10/09/2007
7270044Plasma firing mechanism and method for firing ammunition
The invention comprises 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 ...
09/18/2007
7197843Electronic ignition system for a firearm
Electronic ignition systems which are designed for use with personal firearms utilizing black powder (or black powder substitutes) such as shotguns, rifles, and pistols. Generally, the firearms will be of the type classified as muzzleloaders. The electronic ignition...
04/03/2007
7073447Electro-thermal chemical igniter and connector
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 elec...
07/11/2006
7059250Melted metal dispersal warhead
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-l...
06/13/2006
7021217Versatile cavity actuator and systems incorporating same
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 thermall...
04/04/2006
6994030Pyrotechnic microactuators for microsystems
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. T...
02/07/2006
6964287Non-toxic and non-corrosive ignition mixture
A non-toxic and non-corrosive ignition mixture is created by combining the energy system and the pyrotechnic system. The energy system comprises a high explosive from the groups of nitroesters and nitramines and a senzibiliser of the type of tetrazene or derivatives...
11/15/2005
6941868Single increment initiator charge
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...
09/13/2005
6845715Explosion simulator
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 detonato...
01/25/2005
6805055Plasma firing mechanism and method for firing ammunition
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 ...
10/19/2004
6749702Low temperature autoignition composition
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. The low temperature autoignition co...
06/15/2004
6736068Detonator
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 ...
05/18/2004
6651563Ignition elements and finely graduatable ignition components
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, fer...
11/25/2003
6591753Propellant device for pipe weapons or ballistic projection
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...
07/15/2003
6539869Heat transfer initiator
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 ...
04/01/2003
6502343Emergency rescue device
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 devic...
01/07/2003
6340175Air bag assemblies with foamed energetic igniters
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 hy...
01/22/2002
6298784Heat transfer delay
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 hav...
10/09/2001
6224099Supplemental-restraint-system gas generating device with water-soluble polymeric binder
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 safet...
05/01/2001
6221187Method of safely initiating combustion of a gas generant composition using an autoignition composition
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. The low temperature auto...
04/24/2001
6101947Method of safety initiating combustion of a gas generant composition using autoignition composition
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. The low temperature auto...
08/15/2000
6053108Propellant strip assembly and propellant charge structure
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...
04/25/2000
5993201Enclosed frictionally ignited photographic flash lamp
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 enclo...
11/30/1999
5847310Squib for an air bag with an auto ignition composition
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...
12/08/1998
5831207Autoignition composition for an airbag inflator
An autoigniting composition comprising lead thiocyanate Pb(SCN)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 compo...
11/03/1998
5792982Two-part igniter for gas generating compositions
A two-part igniter for inflators used to inflate inflation devices such as air bags, lift rafts, slide chutes, and the like which includes a heterogeneous mixture of an ignition material and a consolidated mass of either i) a pyrotechnic component or ii) ...
08/11/1998
5773748Limited-life cartridge primers
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 pr...
06/30/1998
5756928Spontaneously-firing explosive composition
A gas generator for an air bag is provided which contains a spontaneously-firing explosive composition in which at least one of a squib, igniting agent and a gas generant is contained in a casing formed of a light alloy material, the spontaneously-firing ...
05/26/1998
5739460Method of safely initiating combustion of a gas generant composition using an autoignition composition
The present invention relates to an 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. The autoignition compositions of the in...
04/14/1998
5717159Lead-free precussion primer mixes based on metastable interstitial composite (MIC) technology
A lead-free percussion primer composition and a percussion cup containing e composition. The lead-free percussion primer composition is comprised of a mixture of about 45 wt % aluminum powder having an outer coating of aluminum oxide and molybdenum trioxi...
02/10/1998
5670735Propellant igniting system and method of making the same
An igniting system for a projectile propellant includes a combustible support tube having an outer surface and an inner surface; a plurality of throughgoing apertures provided in the support tube; a free igniting channel coaxially surrounded by the suppor...
09/23/1997
5654520Delay charge and element, and detonator containing such a charge
A pyrotechnic delay charge for providing delays in the millisecond and second ranges, comprising the components bismuth oxide as an oxidation agent and silicon as a fuel. The invention also relates to a pyrotechnic delay element having an enclosure contai...
08/05/1997
5542688Two-part igniter for gas generating compositions
A two-part igniter for inflators used to inflate inflation devices such as air bags, lift rafts, slide chutes, and the like which includes a heterogeneous mixture of an ignition material and a consolidated mass of either i) a pyrotechnic component or ii) ...
08/06/1996
5485790Gas generator with multiple-charge primer
A gas generator for providing gases in which the gas generating propellant is ignited by a multiple charge primer. In one embodiment the primer includes a primer housing which contains a sensitizer and output charge pill which are maintained in spaced rel...
01/23/1996
5471903Device for igniting a propellant charge, a cartridge for the charge and a magazine for holding cartridges, especially for stud setting or driving tools
A device for igniting a propellant charge is provided with a housing defining a cavity wherein a piston is displaceably guided. The cavity is connected via a bore acting as a nozzle to a chamber wherein a case member of a cartridge is arranged for accommo...
12/05/1995
5460671Ignition compositions for inflator gas generators
Autoigniting compositions and processes for a gas generator of a vehicle occupant restraint system result in rapid autoignition at relatively low temperatures from approximately 135° C. to 210° C., thereby allowing the gas generator to operate at lower ...
10/24/1995
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