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).

  • Patent number: 9488422
    Abstract: 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: Grant
    Filed: December 22, 2010
    Date of Patent: November 8, 2016
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventors: Helmut Hammer, Axel Pfersmann
  • Patent number: 8844187
    Abstract: 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: Grant
    Filed: August 8, 2013
    Date of Patent: September 30, 2014
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventors: Axel Pfersmann, Rainer Himmert
  • Patent number: 8833227
    Abstract: 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: Grant
    Filed: July 2, 2012
    Date of Patent: September 16, 2014
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventors: Axel Pfersmann, Fritz Schlenk, Manfred Hechtl, Alfred Eckel
  • Publication number: 20140041274
    Abstract: 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: Application
    Filed: August 8, 2013
    Publication date: February 13, 2014
    Applicant: DIEHL BGT DEFENCE GMBH & CO. KG
    Inventors: AXEL PFERSMANN, RAINER HIMMERT
  • Patent number: 8561541
    Abstract: 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: Grant
    Filed: September 14, 2011
    Date of Patent: October 22, 2013
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventor: Axel Pfersmann
  • Patent number: 8359964
    Abstract: 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: Grant
    Filed: May 26, 2009
    Date of Patent: January 29, 2013
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventor: Axel Pfersmann
  • Publication number: 20130014634
    Abstract: 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: Application
    Filed: July 2, 2012
    Publication date: January 17, 2013
    Applicant: DIEHL BGT DEFENCE GMBH & CO. KG
    Inventors: Axel PFERSMANN, Fritz SCHLENK, Manfred HECHTL, Alfred ECKEL
  • Patent number: 8161882
    Abstract: 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: Grant
    Filed: December 3, 2010
    Date of Patent: April 24, 2012
    Assignee: Diehl BGT Defense GmbH & Co. KG
    Inventors: Axel Pfersmann, Alfred Eckel
  • Publication number: 20120060714
    Abstract: 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: Application
    Filed: September 14, 2011
    Publication date: March 15, 2012
    Applicant: DIEHL BGT DEFENCE GMBH & CO. KG
    Inventor: AXEL PFERSMANN
  • Publication number: 20110162247
    Abstract: 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: Application
    Filed: December 22, 2010
    Publication date: July 7, 2011
    Applicant: DIEHL BGT DEFENCE GMBH & CO. KG
    Inventors: HELMUT HAMMER, Axel Pfersmann
  • Publication number: 20110083548
    Abstract: 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: Application
    Filed: May 26, 2009
    Publication date: April 14, 2011
    Applicant: DIEHL BGT DEFENCE GMBH & CO. KG
    Inventor: Axel Pfersmann
  • Publication number: 20110072996
    Abstract: 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: Application
    Filed: December 3, 2010
    Publication date: March 31, 2011
    Applicant: DIEHL BGT DEFENCE GMBH & CO. KG
    Inventors: Axel Pfersmann, Alfred Eckel
  • Publication number: 20090133570
    Abstract: 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: Application
    Filed: November 24, 2008
    Publication date: May 28, 2009
    Applicant: DIEHL BGT DEFENCE GMBH & CO. KG
    Inventors: Axel Pfersmann, Alfred Eckel, Kai Willner, Johannes Geisler
  • Patent number: 5698811
    Abstract: 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: Grant
    Filed: May 3, 1996
    Date of Patent: December 16, 1997
    Assignee: Diehl GmbH & Co.
    Inventor: Axel Pfersmann