Patents Assigned to Dynamit Nobel GmbH Explosivstoff-und Systemtechnik
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Patent number: 6457603Abstract: The invention relates to the connection of tubular sections (1, 2) of combustible propellant charge cases consisting of one or several windings of textile threads which are connected to propellants by binding means. Said charge cases are dimensionally stable and have a high level of mechanical resistance. The aim of the invention is to create a safe, resistant, tight connection and to ensure that cracks do not form unchecked during the connection process. To this end, the tubular sections (1, 2) to be connected are inserted into each other, said inserted tubular sections (1, 2) are connected by means of a non-releasable snap connection, and at least one longitudinal cut (3) is made in an axial direction, extending in the area of the connection.Type: GrantFiled: June 30, 2000Date of Patent: October 1, 2002Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Michael Freist, Klaus Redecker
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Patent number: 6453816Abstract: A temperature fuse for gas-generating mixtures consists of substances or mixtures of substances that have lower detonation points or decomposition points than the gas-generating mixture. In particular, the temperature fuse contains substances or mixtures of substances that thermally decompose exothermically in a narrowly restricted temperature range. The evolution of heat that results ignites the gas-generating mixture.Type: GrantFiled: April 17, 2001Date of Patent: September 24, 2002Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Klaus Redecker, Waldemar Weuter, Ulrich Bley, Dagmar Schmittner
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Patent number: 6406053Abstract: The invention relates to a pyrotechnic gas generator, especially for passive restraint systems in motor vehicles, comprising at least two independent loading spaces (1a, 1b) which contain fuel (2) and to each of which an ignition unit (3a, 3b) is assigned which can be controlled independently of each other. All loading spaces (1a, 1b) are connected to a shared expansion chamber (4).Type: GrantFiled: September 15, 2000Date of Patent: June 18, 2002Assignee: Dynamit Nobel GmbH Explosivstoff- und SystemtechnikInventors: Karl Bayer, Rudolf Hiltner
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Patent number: 6384277Abstract: The invention relates to a method of producing N-alkyl-N′-nitroguanidine. According to said method, an alkyl amine solution is added to a nitroguanidine or nitroguanidine nitrate suspension at temperatures of >60° C. and the ammonia formed is removed.Type: GrantFiled: September 7, 2001Date of Patent: May 7, 2002Assignee: Dynamit Nobel GmbH Explosivstoff- und SystemtechnikInventors: Winfried Pabst, Rainer Schirra
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Patent number: 6352033Abstract: The invention relates to a boundary light cartridge and a method for producing the same having a cartridge case (2) with a fitted projectile, a propelling charge powder arranged inside the cartridge case (2), and an ignition assembly for the propelling charge power, whereby the cartridge case (2) has a circumferential radial indentation (10) on the base (3) thereof in which the ignition assembly is arranged. In ignition assemblies which lack harmful substances, the invention provides that the base (3) of the cartridge case is pressed inward at least in partial areas in order to guarantee a complete and uniform reaction during short ignition times of an ignition assembly. As a result, the opening (13) of the indentation (10) is reduced in size toward the interior of the cartridge case (2).Type: GrantFiled: July 11, 2000Date of Patent: March 5, 2002Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Uwe Brede, Jochen Candidus, Heinz Riess
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Patent number: 6335365Abstract: The present invention relates to fireproof, non-explosive solids mixtures containing nitroglycerin and anhydrous lactose that do not have to be classified as an explosive in accordance with ADR/RID, IATA, IMCO and/or UN guidelines, to methods for the preparation of such solids mixtures and to the use of anhydrous lactose for the preparation of fireproof, non-explosive solid mixtures containing nitroglycerin and lactose that do not have to be classified as an explosive in accordance with ADR/RID, IATA, IMCO and/or UN guidelines.Type: GrantFiled: April 28, 1999Date of Patent: January 1, 2002Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Walter Heinzelmann, Cornelius Ruloff
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Patent number: 6313334Abstract: Ferrocene dicarboxylic acid diesters have the general formula (I), in which X stands for an oligoethylene glycol radical with 2 to 20 ethoxyl units and/or an &agr;,&ohgr;-alkyldiol radical with 2 to 18 C atoms. Also disclosed are processes for preparing the same, their use, solid composite propellants containing the disclosed ferrocene dicarboxylic acid diesters and processes for preparing the same.Type: GrantFiled: June 7, 2000Date of Patent: November 6, 2001Assignees: Dynamit Nobel GmbH Explosivstoff - und Systemtechnik, Chemische Betriebe Pluto GmbHInventors: Hans-Peter Hebekeuser, Hans-Peter MacKowiak, Klaus Gottlieb, Hubert Jungbluth, Horst Neitsch
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Patent number: 6295854Abstract: According to the invention, a press roller device (1) for molding a grooved structure inside a tubular workpiece (7) has several press rollers (4,5,6), said press rollers rotating around a form tool (2) and being staggered axially in relation to one another. At least two of the press rollers (4,5) are driven in opposite directions to each other. This arrangement prevents the workpiece from twisting to a large extent.Type: GrantFiled: April 19, 2000Date of Patent: October 2, 2001Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Bernd Stein, Karl-Heinz Putz, Heinz Steinhauer, Wilhelm Zimmermann
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Patent number: 6289820Abstract: The hybrid gas generator to inflate airbags comprises two combustion chambers (14, 16), in each of which a solid material charge (15, 17) is placed, and a storage chamber (11) containing a pressurized storage gas. The storage chamber (11) is connected to diffusion chamber (30) by a closing member (29) which can be perforated. The first solid material charge (15), and the second solid material charge (17) can, for instance, can be sequentially ignited by separate igniter elements (18, 19), thereby determining the pressure accumulation.Type: GrantFiled: September 1, 1999Date of Patent: September 18, 2001Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Lothar Anacker, Karl Bayer, Eduard Berenz, Uwe Brede, Anton Bretfeld, Josef Kraft, Gerrit Scheiderer, Waldemar Weuter, Jiang Zhang
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Patent number: 6269728Abstract: The invention relates to an inductive ignition system, in particular for infantry weapons, having a primary coil (2) which cooperates inductively with a secondary coil (3) in the ignition system of cartridge (4) and which transmits the firing energy that is required for the ignition. For the necessary firing energy to be produced and made available internally, that is with additional supply, the invention proposes fitting a weapon breechblock component (5), displaceable from a cocked position to a firing position, in the weapon housing (1) in which is located the primary coil (2), and that, for production of the ignition energy, an inductive power generator (6) is provided whose coil system (7) is fitted in the weapon breechblock component (5) and whose magnet system (8) is fitted in the weapon housing (1).Type: GrantFiled: November 8, 1999Date of Patent: August 7, 2001Assignee: Dynamit Nobel GmbH Explosivstoff und SystemtechnikInventors: Heinz Kern, Gerhard Kordel, Gerhard Schmidtner
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Patent number: 6262875Abstract: An igniting/firing element includes a casing (1) receiving electrical junction lines connected to an igniting jumper (3) on a chip (2) provided with at least one igniting unit (4a, 4b). In order to allow for the element to be universally used and to avoid uncontrolled discharge, it is suggested that the junction lines be designed in the form of pins, which are led to the casing (1) through a glass seal, and that the casing bottom (1) be a metal body (7) in which bores (8) are provided for said glass seals (6) to pass through, and that the metal body be positive-fit to the plastic body (9) covering the peripheral wall of the casing (1) and wrapping the pin tops (5) emerging from the glass seal (6).Type: GrantFiled: December 2, 1999Date of Patent: July 17, 2001Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Uwe Albrecht, Uwe Brede, Anton Bretfeld, Heinz-Peter Cornelius, Josef Kraft
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Patent number: 6253589Abstract: The invention relates to a flowturning device (1; 101) for producing an internal geared wheel (17) with inner toothing, one set of which is slanted. The workpiece (9) is held by a retaining member (16; 116) during shaping of the first inner toothing. The workpiece (9) is held by the first toothing on the first shaping toot (2; 102) during shaping of the second inner toothing. Once the internal geared wheel (17) has been finished, the rotational coupling between both shaping tools (2, 4; 102, 104) is detached. The internal geared wheel (17) is detached from the slanted toothing(s) by means of a stripping member (18).Type: GrantFiled: March 31, 2000Date of Patent: July 3, 2001Assignee: Dynamit Nobel GmbH Explosivstoff- und SystemtechnikInventors: Karl Heinz Putz, Bernd Stein, Heinz Steinhauer, Wilhelm Zimmermann
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Patent number: 6254128Abstract: The invention relates to a gas generator for an air bag (11) including a cartridge (3) containing a gas-generating charge of solid material (5) and a storage reservoir (9) containing a storage gas (10). To trigger gas production the charge of solid material (5) is ignited. The resulting gas pressure tears off the front face (13) of the cartridge (3) along a peripheral notch (6). A sliding element (7) connected to the front face (13) pierces a sealing element (8) of the storage reservoir (9). A guiding channel (23) in which the front face (13) is guided in the manner of a piston, opens into a flow zone (12). When the front face (13) has reached the flow zone (12), reaction gas flows around the front face (13) into openings (16) in the tube-shaped sliding element (7). The reaction gas then flows into the storage reservoir (9) where it is mixed with the remaining storage gas.Type: GrantFiled: September 1, 1999Date of Patent: July 3, 2001Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Uwe Albrecht, Anton Bretfeld, Josef Kraft, Jiang Zhang
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Patent number: 6234522Abstract: A hybrid gas generator for an air bag (1) including ignitable gas-producing solid charge (5) placed in combustion chamber, a storage chamber (9) containing a gas (10) and a closed by a first bursting disk (8), a breakable separating wall (13) limiting the combustion chamber, which is connected to a hollow sliding piston (7) to perforate the first bursting disk (8) and a second bursting disk (12) in the separating wall (13) between the combustion chamber and the cavity (14) of the sliding piston (7). In order to construct the generator in a simpler and more economical form, the solid charge (5) is placed in a pyrotechnic cartridge that can be mounted separately the separating wall (13) forms the frontal border of the cartridge (3), a round notch (6) is placed on the round wall of the cartridge (3) serving as predetermined breaking point to break the separating wall (13) and the second bursting disk (12) is formed by a thinning on the separating wall (13).Type: GrantFiled: June 11, 1999Date of Patent: May 22, 2001Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Uwe Albrecht, Anton Bretfeld, Hosef Kraft, Jiang Zhang
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Patent number: 6095558Abstract: A gas generator of sheet-metal constructional type for a motor vehicle passenger protection device, the generator having a concentric style of construction with a combustion chamber (2) with a gas-generating charge (3) being disposed around an ignition chamber having an igniter and an ignition charge (1) and the combustion chamber (2) being surrounded by an expansion chamber (4). To achieve lower manufacturing costs, a smaller overall size combined with less weight and good recycling properties, the sheet metal parts forming the combustion chamber (2) and the expansion chamber (4) are connected to one another exclusively by metal-forming techniques.Type: GrantFiled: November 12, 1997Date of Patent: August 1, 2000Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Karl Bayer, Uwe Brede
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Patent number: 6024812Abstract: The invention pertains to propellants that have a substantially reduced CO concentration in the gas vapors compared to NC propellants. These propellants contain nitroaminoguanidines as main component, explosives as additives and oxidising agents.Type: GrantFiled: March 17, 1999Date of Patent: February 15, 2000Assignee: Dynamit Nobel GmbH Explosivstoff-und SystemtechnikInventors: Ulrich Bley, Klaus Redecker