Patents Assigned to Dynamit Nobel Aktiengesellschaft
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Patent number: 4719859Abstract: A training cartridge includes a metallic cartridge case with a case shoulder and dummy projectile having a gas exhaust opening at its front end. A propellant charge powder chamber of the cartridge case is closed in the forward direction by means of a cup-shaped closure element that is inserted in the cartridge case close to the case shoulder and that bursts or ruptures during firing under the action of the powder gases along predetermined intentional breaking zones. Toward the rear, the powder chamber is sealed by means of a bottom piece inserted in the cartridge case. By placing the intentional opening zones into the interior of the cartridge, danger of injury by the ejected cartridge case is reduced to a minimum.Type: GrantFiled: October 23, 1985Date of Patent: January 19, 1988Assignee: Dynamit Nobel AktiengesellschaftInventors: Kurt Ballreich, Ernst Jensen, Helmut Neubert
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Patent number: 4697524Abstract: An after-firing safety mechanism of a training ammunition that is fired through the central barrel of a full-caliber dummy projectile is described. The training ammunition includes a primer igniting an active charge upon impingement of the training ammunition on the target, as well as a locking pin ejectable perpendicularly to the axis of the training ammunition, this pin fixing the primer in place at least as long as the training ammunition is within the barrel of the dummy projectile. The locking pin is inserted in this arrangement in a cavity, to be ejectable by gas pressure. The cavity is in communication with a pyrotechnical gas generator; the latter being connected to an ignition system operating with delay. This ignition system is initiated upon firing of the training ammunition from the barrel of the dummy projectile.Type: GrantFiled: January 16, 1986Date of Patent: October 6, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Horst Penner, Ernst Jensen
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Patent number: 4691462Abstract: A break-open action for sporting rifles comprising a forward part for connection with the at least one rifle barrel, which part can be releasably locked together with a rearward part by snug seats and corresponding fastening elements, and with the rearward part containing lock mechanisms for connection with the rifle stock.Type: GrantFiled: March 26, 1986Date of Patent: September 8, 1987Assignee: Dynamit Nobel AktiengesellschaftInventor: Ennio Mattarelli
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Patent number: 4690056Abstract: An electric detonator device including an insulating carrier member carrying an ignition bridge and first and second electrodes connected to the ignition bridge. At least one of the electrodes is provided in the form of a layered conductor path configured to provide a high-frequency filter so as to prevent high-frequency interference signals from passing to the ignition bridge and causing misfiring.Type: GrantFiled: January 31, 1985Date of Patent: September 1, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Uwe Brede, Gerhard Kordel
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Patent number: 4681631Abstract: An inorganic, aqueous molding composition is described which can be hardened at low temperatures into molded parts having a high flexural stress at break.The molding composition is produced from electrostatic precipitator ash of high-temperature coal-burning power plants, this ash containing 45-55% by weight of vitreous SiO.sub.2 in addition to Al.sub.2 O.sub.3, or from calcined bauxite by reaction with an alkaline alkali silicate solution at a low temperature; fillers being optionally present.Type: GrantFiled: April 7, 1986Date of Patent: July 21, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Hans-Werner Engels, Karlheinz Neuschaffer, Paul Spielau
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Patent number: 4681017Abstract: A practice ammunition system for a rocket launcher having a guide tube for receiving an original rocket, the original rocket including an ignition device which, prior to launch, performs a data exchange via at least one data line with an external fire control unit for the rocket launcher. The practice ammunition system includes a practice rocket having a rocket engine and an igniter for igniting the rocket engine thereof, the practice rocket being insertable in the guide tube of the rocket launcher, a simulator external to the practice rocket arranged for connection with the practice rocket and the fire control unit with the external simulator, after connection with the training rocket and the fire control unit, simulating functions of the ignition device of the original rocket for performing a data exchange dwith the fire control unit and for enabling launching of the practice rocket from the rocket launcher.Type: GrantFiled: July 24, 1985Date of Patent: July 21, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Nikolaus H. J. Fischer, Christoph Mathey, Rainer Schoffl
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Patent number: 4680317Abstract: An expandable molding composition for the production of a cross-linked foam material, and a process for the manufacture of the foam from a mixture of polyolefin and a selected, partially crystalline ethylene-propylene terpolymer, a blowing agent, and optionally a crosslinking agent are disclosed.Type: GrantFiled: April 29, 1985Date of Patent: July 14, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Werner Kuhnel, Paul Spielau
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Patent number: 4674405Abstract: A partially combustible propellant charge igniter has a bottom piece with primer charge and an ignition gas guide tube adjoining this primer charge, with a combustible tube containing the booster charge, the internal diameter of this latter tube being larger than that of the ignition gas guide tube, and a cavity containing a separating charge between the ignition gas guide tube and the combustible tube. A communicating opening is provided between the propagation charge and the separating charge. The communicating opening comprises at least one bore in a valve bonnet, valve means being provided which, in case of excess pressure in the cavity with respect to the booster charge close the bores at least partially, so that ignition of the separating charge takes place essentially through the bore.Type: GrantFiled: January 17, 1986Date of Patent: June 23, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Uwe Brede, Alfred Horr, Heinz Reiss
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Patent number: 4671910Abstract: Closed-cell foam molded parts or articles of crosslinked polyolefin are manufactured according to a process comprising the steps of filling a foamable and crosslinkable polyolefin composition containing a blowing agent and a crosslinking agent into a closed mold and molding a correspondingly shaped, foamable product under pressure, the crosslinking reaction progressing without decomposition of the blowing agent; subsequent heating of the resultant foamable, crosslinked product to a blowing temperature between a pair of metal plates, wherein the product can expand biaxially within the region left between the metal plates; and then heating of the thus-obtained intermediate product under low pressure of about 1 bar so that it can expand into all directions with complete decomposition of the residual blowing agent to result in the completely foamed molded part.Type: GrantFiled: August 16, 1985Date of Patent: June 9, 1987Assignee: Dynamit Nobel AktiengesellschaftInventor: Horst Fuhrmann
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Patent number: 4669383Abstract: A propellant charge igniter is equipped with an igniter tube having bores for connecting with a pressure chamber with a propellant charge, and with a column of annular tablets in the igniter tube serving as the igniter charge. The annular tablets consist, in this arrangement, of an annular base member carrying on at least one end face a shoulder of a smaller wall thickness than the base member wherein the outer diameter of the shoulder is at most as large as the outer diameter of the base member. The shoulders comprise recesses connecting a bore defined by the column of annular tablets and an outer chamber formed by the shoulders and the igniter tube.Type: GrantFiled: May 7, 1985Date of Patent: June 2, 1987Assignee: Dynamit Nobel AktiengesellschaftInventor: Horst Penner
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Exhaust gas catalyst support of inorganic molding compositions and process for producing the support
Patent number: 4668659Abstract: An exhaust gas catalyst support having hollow channels lined with .gamma.-Al.sub.2 O.sub.3 is formed by preparing an inorganic molding composition which actively hardens at 60.degree.-120.degree. C.; the molding composition containing an alkali silicate solution and a solid component reactive with the alkali silicate solution, which component can consist of an oxide mixture with contents of amorphous SiO.sub.2 and aluminum oxide and/or electrostatic precipitator ash from high-temperature coal-burning power plants and/or calcined ground bauxite and/or metakaolin; the hollow channels contained within the exhaust gas catalyst support are formed by reaction of aluminum rods or wires in the alkali silicate solution, with the simultaneous precipitation of alumina hydrate. In a subsequent heating step, the .gamma.-aluminum oxide lining is formed from the alumina hydrate, the lining serving for anchoring and fixation of a catalyst metal within the catalyst support.Type: GrantFiled: April 7, 1986Date of Patent: May 26, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Hans-Werner Engels, Karlheinz Neuschaeffer, Paul Spielau -
Patent number: 4660473Abstract: Two cylinder chambers are provided in a housing, each of these chambers containing a piston. Pins project, as piston rods, from the pistons in differing directions. A duct is located in a zone between the pistons. This duct is in communication with a compressed gas cartridge. Upon triggering of the compressed gas cartridge, the released gas moves the pistons apart so that the pins are moved simultaneously or in accordance with a predetermined sequence of operations.Type: GrantFiled: December 19, 1984Date of Patent: April 28, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Richard Bender, Hellmut Bendler, Gerrit Scheiderer, Hans Winkler
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Patent number: 4653211Abstract: A breech mechanism for a gun is equipped with an inductive ignition energy transmission system for ammunition with primer means comprising a secondary winding, a fixed housing, and a movable breech with at least one primary winding with core. The primary winding is arranged in the fixed housing. Magnetically conductive transmission elements are arranged in the movable breech in such a way that they couple magnetically, as a magnetic yoke, the primary winding to the secondary winding within the primary means.Type: GrantFiled: May 9, 1985Date of Patent: March 31, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Uwe Brede, Gerhard Kordel
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Patent number: 4652671Abstract: It is suggested to produce 5-chloro-1H-tetrazolecarboxylic acid esters by reaction of dichloroisonitriloacetic acid esters with alkali or metal azides or ammonium azide.The dichloroisonitriloacetic acid esters required for this purpose are formed by reacting N-formylaminocarboxylic acid esters with chlorine or with compounds which split off chlorine.Type: GrantFiled: September 12, 1985Date of Patent: March 24, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Gunter Bison, Norbert Linkat, Klaus Thewalt
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Patent number: 4652326Abstract: A process for the production of semifinished products and/or molded components from polypropylene by grafting thereto an alkoxysilane compound in the presence of an organic peroxide involves mising the polypropylene, the silane compound, and the peroxide and subsequently plasticizing and extruding at a temperature of about 170.degree.-240.degree. C. The process utilizes an essentially isotactic homopolymer of propylene with a density of about 0.90-0.91 g/cm.sup.3 and a melt index MFI (#.degree. C./5 kp) of smaller than 0.7 g/10 min, preferably smaller than 0.1 g/10 min, and with a molecular weight higher than 5.multidot.10.sup.5. An initially non-crosslinked semifinished product is obtained.Type: GrantFiled: July 30, 1984Date of Patent: March 24, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Paul Spielau, Werner Kuhnel, Karlo Klaar, Bertram Gaspar, Richard Weiss, Horst Ulb, Hans-Ulrich Breitscheidel, Gerd Klingberg, Jurgen Fenske
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Patent number: 4651254Abstract: A secondary coil is provided for use in inductive igniters for the igniting of propellant charge powder. In these igniters, two coil systems cooperate with each other in accordance with the transformer system, wherein the secondary coil is to be as small as possible and is to form a compact unit with the igniter. This is accomplished by arranging the windings of the secondary coil in the form of flat sandwich coils on a support material in an insulated fashion so that upon folding of the support material, the individual flat coils are placed in mutual opposition so that they form a cylinder coil.Type: GrantFiled: April 5, 1985Date of Patent: March 17, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Uwe Brede, Heinz Kern, Gerhard Kordel
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Patent number: 4646618Abstract: A launching tube with an internal guide surface for effecting controlled spin for missiles, such as rockets, wherein the launching tube is provided on the inside with helically extending grooves and/or ridges contacting guide cams or the like of the missiles for guiding therealong. This launching tube is extruded, and sized, from a molding composition containing fiber-reinforced thermoplastic synthetic resin, to have integrally formed, slightly helically extending grooves and/or ridges.Type: GrantFiled: May 6, 1985Date of Patent: March 3, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Josef Kurth, Christoph Mathey, Waldemar Wissinger
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Patent number: 4646640Abstract: For the chronologically staggered initiation of a plurality of electronic explosive delay detonators connected together with a blasting detonating machine, a signal current produced in each explosive detonator by signals sent by the blasting detonating machine, for example an impulse sequence, is integrated up in order to establish the delay time and, for carrying out of the delay, is integrated anew or integrated down to equality of the integrals or of the starting values. According to the invention, the integrating up begins in all explosive detonators simultaneously, with the end of the integrating up being controlled by signals from the blasting detonating machine.Type: GrantFiled: December 21, 1984Date of Patent: March 3, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Johann Florin, Friedrich Heinemeyer, Peter Roh, Hansmartin Storrle
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Patent number: 4644863Abstract: An electric detonator has a casing and a pole piece electrically insulated with respect to the casing by means of an insulating cup, as well as with an ignition resistor electrically conductively connected to the casing and to the pole piece. In order to avoid undesirable charges on the insulating cup, which could be the cause of misfirings, the insulating cup is associated with an electrically conductive coating in contact with the casing and with the pole piece.Type: GrantFiled: November 9, 1984Date of Patent: February 24, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Richard Bender, Hellmut Bendler, Horst Penner, Reinhold Sander
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Patent number: 4642369Abstract: A process for the production of dimethyl terephthalate from p-xylene and methanol by oxidation in a reactor, in the liquid phase with atmospheric oxygen in the presence of dissolved heavy metal compounds as a catalyst, of a mixture of p-xylene and a fraction containing predominantly methyl p-toluate, which fraction is recycled into the oxidation, to obtain an oxidation product containing primarily p-toluic acid and monomethyl terephthalate, at a temperature of 140.degree.-170.degree. C. and under a pressure of 4-8 bar; by esterification of the oxidation product with liquid and subsequently vaporized methanol brought to an elevated pressure, at a temperature of 220.degree.-280.degree. C.Type: GrantFiled: March 4, 1985Date of Patent: February 10, 1987Assignee: Dynamit Nobel AktiengesellschaftInventors: Rudolf Modic, Jorg Porschen, Anton Schoengen, Ralf Wirges