US3503814A - Pyrotechnic composition containing nickel and aluminum - Google Patents
Pyrotechnic composition containing nickel and aluminum Download PDFInfo
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- US3503814A US3503814A US726548A US3503814DA US3503814A US 3503814 A US3503814 A US 3503814A US 726548 A US726548 A US 726548A US 3503814D A US3503814D A US 3503814DA US 3503814 A US3503814 A US 3503814A
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- aluminum
- pyrotechnic
- nickel
- mixture
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
Definitions
- This invention relates generally to pyrotechnic com positions, pyrotechnic articles and the methods for making them. More particularly, it relates to a composition containing nickel and aluminum and an article made from that composition by compressing the appropriate metal powders, by rolling, swaging, drawing or plating metal wires or strips.
- Pyrotechnic compositions usually contain elements such that when they react after sufiicient heat or activation energy is provided they will produce a strongly exothermic reaction.
- This large source of heat and light has many and diverse applications such for example, as demolition devices, emergency beacons or flares, fuses, detonators, separators, fuels and for welding and cutting metals.
- an object of this invention is to provide a pyrotechnic composition which can be made from readily available and inexpensive materials.
- Another object of this invention is to provide a pyrotechnic article which effectively utilizes the pyrotechnic composition.
- a further object is to provide a method of preparing a pyrotechnic article.
- compositions containing aluminum with nickel may in addition contain magnesium, ferric oxide or bismuth.
- the pyrotechnic articles include a pellet made by compaction of the appropriate metal powders 'and a sheet, wire or strip formed by rolling, swaging, drawing or plating the metals.
- Example 1 The powder mixture of Example 1 is compacted into pellets and heated to approximtaely 660 C., the melting point of aluminum, whereupon aviolet, although practically noiseless, exothermic reaction occurs producing molten NiAl and temperatures exceeding 1700 C. as measured by an optical pyrometer.
- the reaction is also gasless and once initiated will proceed without support or inclusion of oxygen. Further, since the reaction is initiated by heat alone and the mixture itself is relatively insensitive to shock, impact and vibration, pyrotechnic devices utilizing this mixture are perfectly safe for handling, fabrication and storage.
- the composition of Example 1 may also exist in a composite strip formed by rolling sheet stock or powders or by plating either metal onto a base of the other metal.
- the composition further may be set forth in a wire by swaging and drawing the metals using either material as a core element and the other as a sheath around the core. A variation of this was provided by braiding the composite wire to produce components of added strength and large cross sectional areas with sufficient ductility.
- Example 2 Fe O is added in Example 2 in order to accelerate the propagation of the exothermic reaction of the basic mixture of Example 1.
- the Fe O addition does not change the initiation temperature.
- This composition is found to be very effective underwater where the reaction goes to completion once initiation occurs.
- the usual form of the mixture is in pellets or shapes compacted from the metal powders.
- Example 3 Another variation of this invention is the inclusion of magnesium in a mixture of nickel and aluminum, illustrated in Example 3.
- magnesium and additional aluminum are added as a eutectic mixture (37.5% Mg, 62.5% Al) to the mixture of nickel and aluminum and the resulting overall weight percentages are as expressed.
- the actuation temperature for this mixture is approximately 650 C. and the reaction produces temperatures in excess of 2400 C.
- Example 3 A variation of Example 3 is the use of a non-eutectic mixture of magnesium and aluminum with the basic nickel and aluminum mixture. This combination is the most effective when an oxide such of Fe O BeO, CuO or MnO is also included. For example, Fe O is employed in Example 4. This combination of elements and oxide provides a much faster propagation rate of reaction and it is particularly effective for cutting devices.
- a further alternative is to add bismuth to the mixture of nickel, aluminum and magnesium as in Example 5 which has the advantage of a lower initiating temperature of about 480 C. The mechanism thought to be involved here is that magnesium reacts exothermically with bismuth thus providing enough heat to ignite the main charge of nickel and aluminum.
- a pyrotechnic mixture can be ignited in various ways and once initiation occurs, the propagation velocity becomes a function of composition and density among other factors.
- compressed powder configurations or pellets made from these mixtures can be ignited by placing them in contact with loose powder of the same composition and then igniting the powder by means of small heating elements, electric matches or conventional ordnance ignition systems. Ignition may also be provided by heating stoichrometric mixtures of either niobium or tantalum with copper oxide to about 400 C. These low ignition materials are particularly effective since only about 0.5 gm. of these materials will provide ignition within 0.5 to 2 seconds.
- the pyrotechnic mixtures mentioned in the examples can be processed into many shapes and sizes utilizing a variety of fabrication techniques.
- One method, which can be employed, is to compact the powder into a pellet.
- the powders In the actual tests, the powders have an average particle size of approximately 44 microns and were compressed at 40,000 p.s.i. into pellets having a density of about 3.7 gm./cc.
- the mixture can be used as a pyrotechnic in either the original powder form or in conjunc tion with other powder, liquid or semi-solid pyrotechnic materials.
- the powders may also be enclosed in plastic or metal containers which can be molded to any desired shape. But, in the use of powder mixtures, it is important to make sure that there is intimate contact between the various powders and this can be accomplished by initially compacting the powders into pellets and then fracturing the pellets into smaller particles.
- Another fabrication procedure involves rolling of powder mixtures or laminate strips to form composite sheet material. Some of the mixtures can also be made into thin strips or fine wire by cold extrusion, swaging, drawing and rolling. Simple composite materials can be produced by electroplating; for example, nickel can be plated onto fine aluminum wire, foil, ribbon or powder. Another method of using the mixtures is to fill a honeycombed structure with the powders.
- a pyrotechnic composition consisting of nickel, aluminum, magnesium and a metal oxide.
- a pyrotechnic composition consisting of nickel, aluminum and 11.0 to 25.0 weight percent magnesium.
- a pyrotechnic composition consisting of nickel, aluminum, and 24.9 to 53.3 weight percent metal oxide.
- a pyrotechnic composition consisting of nickel, aluminum, magnesium and bismuth.
Description
3,503,814 PYROTECHNIC COMPOSITION CONTAINING NICKEL AND ALUMINUM Horace H. Helms, Jr., Silver Spring, and Alexander G. Rozner, Bethesda, Md., assignors to the United States of America as represented by the Secretary of the Navy No Drawing. Filed May 3, 1968, Ser. No. 726,548
Int. Cl. C06d 1/00 US Cl. 149-109 Claims ABSTRACT OF THE DISCLOSURE A pyrotechnic composition containing nickel and aluminum which may contain in addition magnesium, ferric oxide or bismuth, a pyrotechnic article made from the pyrotechnic composition and a method of preparing the pyrotechnic article by compaction of the appropriate metal powders or by rolling, swaging, drawing or plating to form composite configurations.
BACKGROUND OF THE INVENTION This invention relates generally to pyrotechnic com positions, pyrotechnic articles and the methods for making them. More particularly, it relates to a composition containing nickel and aluminum and an article made from that composition by compressing the appropriate metal powders, by rolling, swaging, drawing or plating metal wires or strips.
Pyrotechnic compositions usually contain elements such that when they react after sufiicient heat or activation energy is provided they will produce a strongly exothermic reaction. This large source of heat and light has many and diverse applications such for example, as demolition devices, emergency beacons or flares, fuses, detonators, separators, fuels and for welding and cutting metals.
Prior to this invention, the art has used the reaction of either palladium or platinum with aluminum to provide an excellent heat source, however this reaction suffers from the deficiency that it requires the use of such expensive metals as palladium and platinum.
SUMMARY OF THE INVENTION Accordingly, an object of this invention is to provide a pyrotechnic composition which can be made from readily available and inexpensive materials.
Another object of this invention is to provide a pyrotechnic article which effectively utilizes the pyrotechnic composition. A further object is to provide a method of preparing a pyrotechnic article.
Briefly, in accordance with one embodiment of this invention, these and other objects are attained by a composition containing aluminum with nickel. The composition may in addition contain magnesium, ferric oxide or bismuth. The pyrotechnic articles include a pellet made by compaction of the appropriate metal powders 'and a sheet, wire or strip formed by rolling, swaging, drawing or plating the metals.
DESCRIPTION OF THE PREFERRED EMBODIMENTS EXAMPLE 1 Weight percent Range percent Nickel 68. 5 40-80 Aluminum 31. 5 60-20 United States Patent O EXAMPLE 2 Weight percent Range percent FezOa 41. 47 53. 3-24. 9
EXAMPLE 3 Weight percent Range percent Nickel es. 5 -51. 4
Aluminum 20. 4 20-23. 6
Magnesium 11. 1 0-25. 0
EXAMPLE 4 Weight percent Range percent Nickel 18. 4 18. 4-36. 0
EXAMPLE 5 Weight percent Range percent Bismuth 72. 5 72. 5'63. 1
The powder mixture of Example 1 is compacted into pellets and heated to approximtaely 660 C., the melting point of aluminum, whereupon aviolet, although practically noiseless, exothermic reaction occurs producing molten NiAl and temperatures exceeding 1700 C. as measured by an optical pyrometer. The reaction is also gasless and once initiated will proceed without support or inclusion of oxygen. Further, since the reaction is initiated by heat alone and the mixture itself is relatively insensitive to shock, impact and vibration, pyrotechnic devices utilizing this mixture are perfectly safe for handling, fabrication and storage. I
The composition of Example 1 may also exist in a composite strip formed by rolling sheet stock or powders or by plating either metal onto a base of the other metal. The composition further may be set forth in a wire by swaging and drawing the metals using either material as a core element and the other as a sheath around the core. A variation of this was provided by braiding the composite wire to produce components of added strength and large cross sectional areas with sufficient ductility.
Fe O is added in Example 2 in order to accelerate the propagation of the exothermic reaction of the basic mixture of Example 1. The Fe O addition does not change the initiation temperature. This composition is found to be very effective underwater where the reaction goes to completion once initiation occurs. The usual form of the mixture is in pellets or shapes compacted from the metal powders.
Another variation of this invention is the inclusion of magnesium in a mixture of nickel and aluminum, illustrated in Example 3. In this example, magnesium and additional aluminum are added as a eutectic mixture (37.5% Mg, 62.5% Al) to the mixture of nickel and aluminum and the resulting overall weight percentages are as expressed.
The actuation temperature for this mixture is approximately 650 C. and the reaction produces temperatures in excess of 2400 C.
A variation of Example 3 is the use of a non-eutectic mixture of magnesium and aluminum with the basic nickel and aluminum mixture. This combination is the most effective when an oxide such of Fe O BeO, CuO or MnO is also included. For example, Fe O is employed in Example 4. This combination of elements and oxide provides a much faster propagation rate of reaction and it is particularly effective for cutting devices. A further alternative is to add bismuth to the mixture of nickel, aluminum and magnesium as in Example 5 which has the advantage of a lower initiating temperature of about 480 C. The mechanism thought to be involved here is that magnesium reacts exothermically with bismuth thus providing enough heat to ignite the main charge of nickel and aluminum.
A pyrotechnic mixture can be ignited in various ways and once initiation occurs, the propagation velocity becomes a function of composition and density among other factors. For example, compressed powder configurations or pellets made from these mixtures can be ignited by placing them in contact with loose powder of the same composition and then igniting the powder by means of small heating elements, electric matches or conventional ordnance ignition systems. Ignition may also be provided by heating stoichrometric mixtures of either niobium or tantalum with copper oxide to about 400 C. These low ignition materials are particularly effective since only about 0.5 gm. of these materials will provide ignition within 0.5 to 2 seconds.
The pyrotechnic mixtures mentioned in the examples can be processed into many shapes and sizes utilizing a variety of fabrication techniques. One method, which can be employed, is to compact the powder into a pellet. In the actual tests, the powders have an average particle size of approximately 44 microns and were compressed at 40,000 p.s.i. into pellets having a density of about 3.7 gm./cc. However, the mixture can be used as a pyrotechnic in either the original powder form or in conjunc tion with other powder, liquid or semi-solid pyrotechnic materials. The powders may also be enclosed in plastic or metal containers which can be molded to any desired shape. But, in the use of powder mixtures, it is important to make sure that there is intimate contact between the various powders and this can be accomplished by initially compacting the powders into pellets and then fracturing the pellets into smaller particles.
Another fabrication procedure involves rolling of powder mixtures or laminate strips to form composite sheet material. Some of the mixtures can also be made into thin strips or fine wire by cold extrusion, swaging, drawing and rolling. Simple composite materials can be produced by electroplating; for example, nickel can be plated onto fine aluminum wire, foil, ribbon or powder. Another method of using the mixtures is to fill a honeycombed structure with the powders.
What is claimed as new and desired to be secured by Letters Patent of the United States is:
1. A pyrotechnic composition consisting of nickel, aluminum, magnesium and a metal oxide.
2. A pyrotechnic composition consisting of nickel, aluminum and 11.0 to 25.0 weight percent magnesium.
3. A pyrotechnic composition consisting of nickel, aluminum, and 24.9 to 53.3 weight percent metal oxide.
4. A pyrotechnic composition according to claim 3 wherein the metal oxide is ferric oxide.
5. A pyrotechnic composition consisting of nickel, aluminum, magnesium and bismuth.
References Cited UNITED STATES PATENTS OTHER REFERENCES Powder Metallurgy, 1960, pp. 793 and 799.
Metals Handbook, The American Society for Metals, Cleveland, Ohio, 1948, pp. 761-840.
Alcoa Aluminum Handbook, Aluminum Company of America, Pittsburgh, Pa., 1957, pp. 6-11 and 178.
Interscience Publishers, N.Y.,
BENJAMIN R. PADGE'IT, Primary Examiner S. J. LECHERT, 111., Assistant Examiner US. Cl. X.R. 149-2, 15
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US72654868A | 1968-05-03 | 1968-05-03 |
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Cited By (36)
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---|---|---|---|---|
US4000022A (en) * | 1974-10-17 | 1976-12-28 | The United States Of America As Represented By The Secretary Of The Navy | Fast-burning compositions of fluorinated polymers and metal powders |
US4158322A (en) * | 1977-08-22 | 1979-06-19 | The United States Of America As Represented By The Secretary Of The Navy | Pyrotechnic separation device |
US4280409A (en) * | 1979-04-09 | 1981-07-28 | The United States Of America As Represented By The Secretary Of The Navy | Molten metal-liquid explosive device |
US4331080A (en) * | 1980-06-09 | 1982-05-25 | General Electric Co. | Composite high explosives for high energy blast applications |
US4402776A (en) * | 1980-08-22 | 1983-09-06 | Hughes Aircraft Company | Silicon-containing compositions for self-sustained intermetallic reactions |
US5266132A (en) * | 1991-10-08 | 1993-11-30 | The United States Of America As Represented By The United States Department Of Energy | Energetic composites |
US5339624A (en) * | 1990-11-23 | 1994-08-23 | Nobelkrut Ab | Ramjet propellants |
US5372069A (en) * | 1993-09-09 | 1994-12-13 | The United States Of America As Represented By The Secretary Of The Navy | Pyronol torch |
US5402728A (en) * | 1992-08-13 | 1995-04-04 | Trw Inc. | Low shock separation bolt |
US5505799A (en) * | 1993-09-19 | 1996-04-09 | Regents Of The University Of California | Nanoengineered explosives |
US6431594B1 (en) | 2001-01-05 | 2002-08-13 | Trw Vehicle Safety Systems Inc. | Air bag inflator with mechanism for deactivation of second stage and autoignition |
DE10161955A1 (en) * | 2001-01-08 | 2003-05-28 | Trw Inc | Seat belt pretensioner that uses MEMS devices |
US6584911B2 (en) | 2001-04-26 | 2003-07-01 | Trw Inc. | Initiators for air bag inflators |
US6598899B2 (en) | 2001-08-21 | 2003-07-29 | Trw Inc. | Inflatable seat belt using MEMS devices |
US6619692B2 (en) | 2001-03-27 | 2003-09-16 | Trw Inc. | Air bag inflators |
US20050258159A1 (en) * | 2004-05-20 | 2005-11-24 | Alexza Molecular Delivery Corporation | Stable initiator compositions and igniters |
US6983955B2 (en) | 2001-01-05 | 2006-01-10 | Trw Inc. | Air bag inflators |
US20060032501A1 (en) * | 2004-08-12 | 2006-02-16 | Hale Ron L | Aerosol drug delivery device incorporating percussively activated heat packages |
US20060236887A1 (en) * | 2005-02-08 | 2006-10-26 | John Childs | Delay units and methods of making the same |
US20090031911A1 (en) * | 2007-08-02 | 2009-02-05 | Ensign-Bickford Aerospace & Defense Company | Slow burning, gasless heating elements |
US20090047573A1 (en) * | 2007-08-14 | 2009-02-19 | Millennium Engineering And Integration Company | Chloride-free thermal batteries using molten nitrate electrolytes |
US20090078345A1 (en) * | 2007-09-25 | 2009-03-26 | Ensign-Bickford Aerospace & Defense Company | Heat generating structures |
US20090090440A1 (en) * | 2007-10-04 | 2009-04-09 | Ensign-Bickford Aerospace & Defense Company | Exothermic alloying bimetallic particles |
US20090235915A1 (en) * | 2006-08-07 | 2009-09-24 | Doumanidis Charalabos C | Nanoheater elements, systems and methods of use thereof |
US20100006092A1 (en) * | 2004-08-12 | 2010-01-14 | Alexza Pharmaceuticals, Inc. | Aerosol Drug Delivery Device Incorporating Percussively Activated Heat Packages |
US20100092851A1 (en) * | 2007-08-14 | 2010-04-15 | Millennium Engineering And Integration Company | Chloride-free, sodium ion-free, and water-free thermal batteries using molten nitrate electrolytes |
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US20120055594A1 (en) * | 2010-09-08 | 2012-03-08 | Ensign-Bickford Aerospace & Defense Company | Slow burning heat generating structure |
US8387612B2 (en) | 2003-05-21 | 2013-03-05 | Alexza Pharmaceuticals, Inc. | Self-contained heating unit and drug-supply unit employing same |
US8794152B2 (en) | 2010-03-09 | 2014-08-05 | Dyno Nobel Inc. | Sealer elements, detonators containing the same, and methods of making |
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3020610A (en) * | 1955-12-20 | 1962-02-13 | Erico Prod Inc | Method of welding aluminum and other metals |
US3050409A (en) * | 1959-11-30 | 1962-08-21 | Owens Illinois Glass Co | Manufacture of refractory oxide coatings |
USRE25277E (en) * | 1954-09-02 | 1962-10-30 | Catalyzed metal fuel | |
US3089798A (en) * | 1955-04-25 | 1963-05-14 | Erico Prod Inc | Material for welding aluminum and other metals |
US3118798A (en) * | 1961-10-26 | 1964-01-21 | Olin Mathieson | Composition and method of forming |
US3160537A (en) * | 1961-10-12 | 1964-12-08 | Catalyst Research Corp | Heating composition |
US3168090A (en) * | 1960-05-02 | 1965-02-02 | Lockheed Aircraft Corp | Self-contained welding torch |
US3325316A (en) * | 1965-03-29 | 1967-06-13 | Gilmour C Macdonald | Pyrotechnic compositions of metal matrix with oxide dispersed therein |
US3344210A (en) * | 1967-09-26 | Method of making. solid thermite pellets | ||
US3392015A (en) * | 1965-08-24 | 1968-07-09 | Int Nickel Co | Aluminum-base alloy for use at elevated temperatures |
-
1968
- 1968-05-03 US US726548A patent/US3503814A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3344210A (en) * | 1967-09-26 | Method of making. solid thermite pellets | ||
USRE25277E (en) * | 1954-09-02 | 1962-10-30 | Catalyzed metal fuel | |
US3089798A (en) * | 1955-04-25 | 1963-05-14 | Erico Prod Inc | Material for welding aluminum and other metals |
US3020610A (en) * | 1955-12-20 | 1962-02-13 | Erico Prod Inc | Method of welding aluminum and other metals |
US3050409A (en) * | 1959-11-30 | 1962-08-21 | Owens Illinois Glass Co | Manufacture of refractory oxide coatings |
US3168090A (en) * | 1960-05-02 | 1965-02-02 | Lockheed Aircraft Corp | Self-contained welding torch |
US3160537A (en) * | 1961-10-12 | 1964-12-08 | Catalyst Research Corp | Heating composition |
US3118798A (en) * | 1961-10-26 | 1964-01-21 | Olin Mathieson | Composition and method of forming |
US3325316A (en) * | 1965-03-29 | 1967-06-13 | Gilmour C Macdonald | Pyrotechnic compositions of metal matrix with oxide dispersed therein |
US3392015A (en) * | 1965-08-24 | 1968-07-09 | Int Nickel Co | Aluminum-base alloy for use at elevated temperatures |
Cited By (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4000022A (en) * | 1974-10-17 | 1976-12-28 | The United States Of America As Represented By The Secretary Of The Navy | Fast-burning compositions of fluorinated polymers and metal powders |
US4158322A (en) * | 1977-08-22 | 1979-06-19 | The United States Of America As Represented By The Secretary Of The Navy | Pyrotechnic separation device |
US4280409A (en) * | 1979-04-09 | 1981-07-28 | The United States Of America As Represented By The Secretary Of The Navy | Molten metal-liquid explosive device |
US4372213A (en) * | 1979-04-09 | 1983-02-08 | The United States Of America As Represented By The Secretary Of The Navy | Molten metal-liquid explosive method |
US4331080A (en) * | 1980-06-09 | 1982-05-25 | General Electric Co. | Composite high explosives for high energy blast applications |
US4402776A (en) * | 1980-08-22 | 1983-09-06 | Hughes Aircraft Company | Silicon-containing compositions for self-sustained intermetallic reactions |
US5339624A (en) * | 1990-11-23 | 1994-08-23 | Nobelkrut Ab | Ramjet propellants |
US5606146A (en) * | 1991-10-08 | 1997-02-25 | The United States Of America As Represented By The United States Department Of Energy | Energetic composites and method of providing chemical energy |
US5266132A (en) * | 1991-10-08 | 1993-11-30 | The United States Of America As Represented By The United States Department Of Energy | Energetic composites |
US5402728A (en) * | 1992-08-13 | 1995-04-04 | Trw Inc. | Low shock separation bolt |
US5372069A (en) * | 1993-09-09 | 1994-12-13 | The United States Of America As Represented By The Secretary Of The Navy | Pyronol torch |
US5505799A (en) * | 1993-09-19 | 1996-04-09 | Regents Of The University Of California | Nanoengineered explosives |
US6431594B1 (en) | 2001-01-05 | 2002-08-13 | Trw Vehicle Safety Systems Inc. | Air bag inflator with mechanism for deactivation of second stage and autoignition |
US6983955B2 (en) | 2001-01-05 | 2006-01-10 | Trw Inc. | Air bag inflators |
DE10161955A1 (en) * | 2001-01-08 | 2003-05-28 | Trw Inc | Seat belt pretensioner that uses MEMS devices |
US6641074B2 (en) | 2001-01-08 | 2003-11-04 | Trw Inc. | Seat belt webbing pretensioner using MEMS devices |
US6619692B2 (en) | 2001-03-27 | 2003-09-16 | Trw Inc. | Air bag inflators |
DE10210587B4 (en) * | 2001-03-27 | 2006-05-04 | Trw Inc., Lyndhurst | air bag inflators |
US6584911B2 (en) | 2001-04-26 | 2003-07-01 | Trw Inc. | Initiators for air bag inflators |
US6598899B2 (en) | 2001-08-21 | 2003-07-29 | Trw Inc. | Inflatable seat belt using MEMS devices |
US9370629B2 (en) | 2003-05-21 | 2016-06-21 | Alexza Pharmaceuticals, Inc. | Self-contained heating unit and drug-supply unit employing same |
US8387612B2 (en) | 2003-05-21 | 2013-03-05 | Alexza Pharmaceuticals, Inc. | Self-contained heating unit and drug-supply unit employing same |
US8991387B2 (en) | 2003-05-21 | 2015-03-31 | Alexza Pharmaceuticals, Inc. | Self-contained heating unit and drug-supply unit employing same |
US7923662B2 (en) | 2004-05-20 | 2011-04-12 | Alexza Pharmaceuticals, Inc. | Stable initiator compositions and igniters |
US7402777B2 (en) | 2004-05-20 | 2008-07-22 | Alexza Pharmaceuticals, Inc. | Stable initiator compositions and igniters |
US20050258159A1 (en) * | 2004-05-20 | 2005-11-24 | Alexza Molecular Delivery Corporation | Stable initiator compositions and igniters |
US20060032501A1 (en) * | 2004-08-12 | 2006-02-16 | Hale Ron L | Aerosol drug delivery device incorporating percussively activated heat packages |
US20100006092A1 (en) * | 2004-08-12 | 2010-01-14 | Alexza Pharmaceuticals, Inc. | Aerosol Drug Delivery Device Incorporating Percussively Activated Heat Packages |
US7581540B2 (en) | 2004-08-12 | 2009-09-01 | Alexza Pharmaceuticals, Inc. | Aerosol drug delivery device incorporating percussively activated heat packages |
US8245643B2 (en) | 2005-02-08 | 2012-08-21 | Dyno Nobel Inc. | Delay units and methods of making the same |
US20060236887A1 (en) * | 2005-02-08 | 2006-10-26 | John Childs | Delay units and methods of making the same |
US7650840B2 (en) | 2005-02-08 | 2010-01-26 | Dyno Nobel Inc. | Delay units and methods of making the same |
US20100064924A1 (en) * | 2005-02-08 | 2010-03-18 | John Childs | Delay units and methods of making the same |
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US20090235915A1 (en) * | 2006-08-07 | 2009-09-24 | Doumanidis Charalabos C | Nanoheater elements, systems and methods of use thereof |
US9078294B2 (en) * | 2006-08-07 | 2015-07-07 | University Of Massachusetts | Nanoheater elements, systems and methods of use thereof |
US7930976B2 (en) | 2007-08-02 | 2011-04-26 | Ensign-Bickford Aerospace & Defense Company | Slow burning, gasless heating elements |
US20090031911A1 (en) * | 2007-08-02 | 2009-02-05 | Ensign-Bickford Aerospace & Defense Company | Slow burning, gasless heating elements |
US20090047573A1 (en) * | 2007-08-14 | 2009-02-19 | Millennium Engineering And Integration Company | Chloride-free thermal batteries using molten nitrate electrolytes |
US7629075B2 (en) * | 2007-08-14 | 2009-12-08 | Millennium Engineering And Integration Company | Chloride-free thermal batteries using molten nitrate electrolytes |
US8039138B2 (en) | 2007-08-14 | 2011-10-18 | Millennium Engineering And Integration Company | Chloride-free, sodium ion-free, and water-free thermal batteries using molten nitrate electrolytes |
US20100092851A1 (en) * | 2007-08-14 | 2010-04-15 | Millennium Engineering And Integration Company | Chloride-free, sodium ion-free, and water-free thermal batteries using molten nitrate electrolytes |
US20090078345A1 (en) * | 2007-09-25 | 2009-03-26 | Ensign-Bickford Aerospace & Defense Company | Heat generating structures |
US20090090440A1 (en) * | 2007-10-04 | 2009-04-09 | Ensign-Bickford Aerospace & Defense Company | Exothermic alloying bimetallic particles |
US8794152B2 (en) | 2010-03-09 | 2014-08-05 | Dyno Nobel Inc. | Sealer elements, detonators containing the same, and methods of making |
US8608878B2 (en) * | 2010-09-08 | 2013-12-17 | Ensign-Bickford Aerospace & Defense Company | Slow burning heat generating structure |
US20120055594A1 (en) * | 2010-09-08 | 2012-03-08 | Ensign-Bickford Aerospace & Defense Company | Slow burning heat generating structure |
US9677364B2 (en) | 2012-07-31 | 2017-06-13 | Otto Torpedo, Inc. | Radial conduit cutting system and method |
US9677365B2 (en) | 2014-08-26 | 2017-06-13 | Richard F. Tallini | Radial conduit cutting system and method |
EP3196402A1 (en) | 2016-01-22 | 2017-07-26 | Shell Internationale Research Maatschappij B.V. | Plugging to-be-abandoned wellbores in the earth |
US9970102B2 (en) | 2016-02-08 | 2018-05-15 | International Business Machines Corporation | Energy release using tunable reactive materials |
US10214809B2 (en) | 2016-02-08 | 2019-02-26 | International Business Machines Corporation | Energy release using tunable reactive materials |
US20230258052A1 (en) * | 2020-07-07 | 2023-08-17 | Interwell P&A As | Thermite reaction charge, method for forming a threephased rock-to-rock well barrier, and a well barrier formed thereof |
US20220314352A1 (en) * | 2021-04-02 | 2022-10-06 | General Electric Company | Methods of furnace-less brazing |
US11541470B2 (en) * | 2021-04-02 | 2023-01-03 | General Electric Company | Methods of furnace-less brazing |
US11780020B2 (en) | 2021-04-02 | 2023-10-10 | General Electric Company | Exothermic braze precursor material |
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