Patents by Inventor Axel Pfersmann
Axel Pfersmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9488422Abstract: The present invention relates to a grenade that can be fired from a barrel, for recoilless firing. The barrel is open at both ends and is without any flow cross-section constrictions. The grenade is formed of a grenade base body which surrounds at least one explosive charge, and a flow cross-section reduction device for reducing the flow cross-section of the barrel. The device is arranged in the opposite direction to the firing direction X with respect to the grenade base body. The flow cross-section reduction device is connected to the grenade base body, separated from it, via a connecting device, and is connected to it such that it is stable during firing. A grenade launcher or shell firing apparatus has a grenade such as this, and the grenade firing apparatus has a barrel which is open at both ends and does not have any flow cross-section constrictions.Type: GrantFiled: December 22, 2010Date of Patent: November 8, 2016Assignee: Diehl BGT Defence GmbH & Co. KGInventors: Helmut Hammer, Axel Pfersmann
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Patent number: 8844187Abstract: A weapon barrel of an automatic firearm contains a muzzle that is set into flexural oscillations by firing, with a damping device for damping the flexural oscillations by frictional processes between a radially projecting friction ring disposed on the muzzle and at least one friction element loaded by of a spring element. Wherein at least one friction element loaded by a separate spring element acts on both sides of the friction ring respectively and is supported so as to be axially movable relative to the muzzle.Type: GrantFiled: August 8, 2013Date of Patent: September 30, 2014Assignee: Diehl BGT Defence GmbH & Co. KGInventors: Axel Pfersmann, Rainer Himmert
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Patent number: 8833227Abstract: A sealing ring obturates a propellant charge cartridge of an automatic firearm for caseless ammunition, in particular against an end face of a firearm element, in particular for a breech or a projectile cartridge. The sealing ring contains a sealing surface that can be brought into contact with the end face. The sealing surface contains a first region around an annular opening of the sealing ring and a second region around the first region. The second region is set back relative to a tangential surface to the first region. In addition, a propellant charge cartridge for an automatic firearm for caseless ammunition, has at least one of the sealing rings. The propellant charge cartridge preferably contains one or multiple, in particular two, propellant charge chambers, which are provided with a sealing ring on each of the breech side and the projectile cartridge side.Type: GrantFiled: July 2, 2012Date of Patent: September 16, 2014Assignee: Diehl BGT Defence GmbH & Co. KGInventors: Axel Pfersmann, Fritz Schlenk, Manfred Hechtl, Alfred Eckel
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Publication number: 20140041274Abstract: A weapon barrel of an automatic firearm contains a muzzle that is set into flexural oscillations by firing, with a damping device for damping the flexural oscillations by frictional processes between a radially projecting friction ring disposed on the muzzle and at least one friction element loaded by of a spring element. Wherein at least one friction element loaded by a separate spring element acts on both sides of the friction ring respectively and is supported so as to be axially movable relative to the muzzle.Type: ApplicationFiled: August 8, 2013Publication date: February 13, 2014Applicant: DIEHL BGT DEFENCE GMBH & CO. KGInventors: AXEL PFERSMANN, RAINER HIMMERT
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Patent number: 8561541Abstract: A propellant charge body for insertion into a propellant charge chamber in a firearm for firing caseless ammunition has a base body which contains a propellant charge. The diameter of the base body is less than the internal diameter of the propellant charge chamber. Radial projections are formed in one or more subareas on the circumference of the base body and match the radius of the base body in these subareas to the internal radius of the propellant charge chamber.Type: GrantFiled: September 14, 2011Date of Patent: October 22, 2013Assignee: Diehl BGT Defence GmbH & Co. KGInventor: Axel Pfersmann
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Patent number: 8359964Abstract: A weapon system uses caseless munitions. In order to permit a further use of the weapon system essentially without delay on jamming, a configuration of the weapon system is disclosed that has a weapon barrel, a projectile magazine with individual chambers and a propellant charge magazine with individual chambers. In order to guarantee a firing position, the projectile magazine and the propellant charge magazine, may be moved relative to the weapon barrel. The projectile magazine has a chamber located in a discharge position in which an ejector device for the projectile in the chamber may be activated. A further chamber of the projectile magazine may be loaded in the movement position for the projectile magazine and the propellant charge magazine has a chamber, located in a discharge position in which an ejector device for the propellant charge in the chamber may be activated. The further chamber of the propellant charge magazine may be loaded in the movement position of the propellant charge magazine.Type: GrantFiled: May 26, 2009Date of Patent: January 29, 2013Assignee: Diehl BGT Defence GmbH & Co. KGInventor: Axel Pfersmann
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Publication number: 20130014634Abstract: A sealing ring obturates a propellant charge cartridge of an automatic firearm for caseless ammunition, in particular against an end face of a firearm element, in particular for a breech or a projectile cartridge. The sealing ring contains a sealing surface that can be brought into contact with the end face. The sealing surface contains a first region around an annular opening of the sealing ring and a second region around the first region. The second region is set back relative to a tangential surface to the first region. In addition, a propellant charge cartridge for an automatic firearm for caseless ammunition, has at least one of the sealing rings. The propellant charge cartridge preferably contains one or multiple, in particular two, propellant charge chambers, which are provided with a sealing ring on each of the breech side and the projectile cartridge side.Type: ApplicationFiled: July 2, 2012Publication date: January 17, 2013Applicant: DIEHL BGT DEFENCE GMBH & CO. KGInventors: Axel PFERSMANN, Fritz SCHLENK, Manfred HECHTL, Alfred ECKEL
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Patent number: 8161882Abstract: A propellant charge for use for ammunition, in which the propellant charge is separate from the projectile, has a propellant charge substance which can be initiated by a fuse. In order to solve the problem of providing a propellant charge for use in a two-part munition, which on the one hand can be produced easily and at low cost and on the other hand does not present any risk of damage when mechanically loaded before use, it is proposed that a propellant charge casing be provided which surrounds the propellant charge substance, with the propellant charge casing being in the form of a plastic part which is composed of a non-combustible, temperature-stable plastic material.Type: GrantFiled: December 3, 2010Date of Patent: April 24, 2012Assignee: Diehl BGT Defense GmbH & Co. KGInventors: Axel Pfersmann, Alfred Eckel
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Publication number: 20120060714Abstract: A propellant charge body for insertion into a propellant charge chamber in a firearm for firing caseless ammunition has a base body which contains a propellant charge. The diameter of the base body is less than the internal diameter of the propellant charge chamber. Radial projections are formed in one or more subareas on the circumference of the base body and match the radius of the base body in these subareas to the internal radius of the propellant charge chamber.Type: ApplicationFiled: September 14, 2011Publication date: March 15, 2012Applicant: DIEHL BGT DEFENCE GMBH & CO. KGInventor: AXEL PFERSMANN
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Publication number: 20110162247Abstract: The present invention relates to a grenade that can be fired from a barrel, for recoilless firing. The barrel is open at both ends and is without any flow cross-section constrictions. The grenade is formed of a grenade base body which surrounds at least one explosive charge, and a flow cross-section reduction device for reducing the flow cross-section of the barrel. The device is arranged in the opposite direction to the firing direction X with respect to the grenade base body. The flow cross-section reduction device is connected to the grenade base body, separated from it, via a connecting device, and is connected to it such that it is stable during firing. A grenade launcher or shell firing apparatus has a grenade such as this, and the grenade firing apparatus has a barrel which is open at both ends and does not have any flow cross-section constrictions.Type: ApplicationFiled: December 22, 2010Publication date: July 7, 2011Applicant: DIEHL BGT DEFENCE GMBH & CO. KGInventors: HELMUT HAMMER, Axel Pfersmann
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Publication number: 20110083548Abstract: A weapon system uses caseless munitions. In order to permit a further use of the weapon system essentially without delay on jamming, a configuration of the weapon system is disclosed that has a weapon barrel, a projectile magazine with individual chambers and a propellant charge magazine with individual chambers. In order to guarantee a firing position, the projectile magazine and the propellant charge magazine, may be moved relative to the weapon barrel. The projectile magazine has a chamber located in a discharge position in which an ejector device for the projectile in the chamber may be activated. A further chamber of the projectile magazine may be loaded in the movement position for the projectile magazine and the propellant charge magazine has a chamber, located in a discharge position in which an ejector device for the propellant charge in the chamber may be activated. The further chamber of the propellant charge magazine may be loaded in the movement position of the propellant charge magazine.Type: ApplicationFiled: May 26, 2009Publication date: April 14, 2011Applicant: DIEHL BGT DEFENCE GMBH & CO. KGInventor: Axel Pfersmann
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Publication number: 20110072996Abstract: A propellant charge for use for ammunition, in which the propellant charge is separate from the projectile, has a propellant charge substance which can be initiated by a fuse. In order to solve the problem of providing a propellant charge for use in a two-part munition, which on the one hand can be produced easily and at low cost and on the other hand does not present any risk of damage when mechanically loaded before use, it is proposed that a propellant charge casing be provided which surrounds the propellant charge substance, with the propellant charge casing being in the form of a plastic part which is composed of a non-combustible, temperature-stable plastic material.Type: ApplicationFiled: December 3, 2010Publication date: March 31, 2011Applicant: DIEHL BGT DEFENCE GMBH & CO. KGInventors: Axel Pfersmann, Alfred Eckel
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Publication number: 20090133570Abstract: A weapon barrel of an automatic firearm is subject to bending oscillations during firing. A damping device is provided for damping the bending oscillations and to at least largely dissipate the kinetic energy of the bending oscillations by friction processes which are initiated by the bending oscillations, between two respective successive shots in the firing sequence.Type: ApplicationFiled: November 24, 2008Publication date: May 28, 2009Applicant: DIEHL BGT DEFENCE GMBH & CO. KGInventors: Axel Pfersmann, Alfred Eckel, Kai Willner, Johannes Geisler
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Patent number: 5698811Abstract: An igniting unit for a propellent charge, including a central perforated flame guiding tube having propellant rods which are oriented in an axial direction arranged on the outer surface thereof. On the inner surface of the flame guiding tube and on the casing surface of the propellant rods, however, not on the end surfaces of the latter, there is provided an igniting coating, and in which the igniting coating which is provided on the inner surface of the flame guiding tube is enhanced by an igniting powder strip which is oriented to extend in an axial direction.Type: GrantFiled: May 3, 1996Date of Patent: December 16, 1997Assignee: Diehl GmbH & Co.Inventor: Axel Pfersmann