Patents by Inventor Christer Thuman

Christer Thuman 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: 11953299
    Abstract: A procedure for producing a warhead with controlled fragmentation includes manufacturing an inner shell and filling it with an explosive substance. The procedure further includes providing a net around the outer surface of the inner shell as well as depositing a material on and around the net. A warhead is produced by the procedure and includes an inner shell. A material applied to the warhead comprises weak points for guided fragmentation of the deposited material upon detonation of the warhead.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: April 9, 2024
    Assignee: BAE SYSTEMS BOFORS AB
    Inventors: Christer Thuman, Björn Johansson, Hamzah Hamdan
  • Publication number: 20230358519
    Abstract: A method is provided for producing a component for a warhead, wherein the method involves the steps: i.) an inner shell is arranged on a tool, ii.) preshaped projectiles are arranged on the inner shell, iii.) powder is arranged to enclose the preshaped projectiles, iv.) the powder is pressed such that the powder, the preshaped projectiles, and the inner shell are joined together, v.) the tool is removed from the component formed from the powder, the preshaped projectiles, and the inner shell. A warhead and a projectile are also provided.
    Type: Application
    Filed: February 1, 2021
    Publication date: November 9, 2023
    Applicant: BAE SYSTEMS BOFORS AB
    Inventors: Christer THUMAN, Hamzah HAMDAN, Björn JOHANSSON
  • Patent number: 11725918
    Abstract: A payload container for providing a horizontal dispersion pattern of sub-projectiles suitable for combatting surface targets is in the form of a cylinder and includes at least two sub-projectiles arranged in a core enclosed by a container wall, wherein the sub-projectiles are linearly disposed. In addition, a projectile and use of the same include at least one payload container or a plurality of sequentially arranged payload containers displaced by a displacement angle relative to each other. The displacement angle is predetermined in such way so that the sub-projectiles are vertically lined at the time when the mechanical force from the carrier shell disappears and the sub-projectiles are spread to the left and to the right, providing a horizontal dispersion pattern.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: August 15, 2023
    Assignee: BAE SYSTEMS BOFORS AB
    Inventor: Christer Thuman
  • Publication number: 20230194222
    Abstract: A projectile for short firing ranges includes as a cylinder with a nose having a substantially flat surface arranged with a threaded socket allowing for the arrangement of, for example, a fuze a rear section designed with a substantially flat surface, as well as a projectile body arranged with energetic material enclosed by a casing.
    Type: Application
    Filed: May 4, 2021
    Publication date: June 22, 2023
    Applicant: BAE SYSTEMS BOFORS AB
    Inventors: Anders HAGBERG, Christer THUMAN
  • Publication number: 20220155045
    Abstract: A method for producing a warhead with directed blasting action involves the step of making an outer casing and arranging therein a charge with a cavity situated at the front end of the charge. An insert whose shape corresponds to the shape of the cavity is arranged on the surface of the charge. The method furthermore involves the step of depositing a material on the insert in an additive manufacturing process. A warhead manufactured according to the method includes an outer casing, a charge with a cavity situated at the front end of the charge, and an insert. A material is deposited on the insert.
    Type: Application
    Filed: March 9, 2020
    Publication date: May 19, 2022
    Applicant: BAE SYSTEMS BOFORS AB
    Inventors: Hamzah HAMDAN, Christer THUMAN, Björn JOHANSSON
  • Publication number: 20220155046
    Abstract: A procedure for producing a warhead with controlled fragmentation includes manufacturing an inner shell and filling it with an explosive substance. The procedure further includes providing a net around the outer surface of the inner shell as well as depositing a material on and around the net. A warhead is produced by the procedure and includes an inner shell. A material applied to the warhead comprises weak points for guided fragmentation of the deposited material upon detonation of the warhead.
    Type: Application
    Filed: March 9, 2020
    Publication date: May 19, 2022
    Applicant: BAE SYSTEMS BOFORS AB
    Inventors: Christer THUMAN, Björn JOHANSSON, Hamzah HAMDAN
  • Patent number: 11236980
    Abstract: A holding device and method for decreasing the contact-impact event on sub-projectiles when fired from a barrel, cylinder, carrier shell or the like includes a core and at least two legs that at least partially enclose at least one sub-projectile each. When a projectile is fired from a barrel or the like the sub-projectiles load the legs of the device which are deformed and open up and release the sub-projectiles in a controlled manner without tumbling which leads them to hit and penetrate their target with the short-side. A holding device including sub-projectiles and a projectile including the holding device are also provided.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: February 1, 2022
    Assignee: BAE SYSTEMS BOFORS AB
    Inventors: Christer Thuman, Ulf Heiche, Reijo Vesa
  • Patent number: 11231259
    Abstract: A projectile with selectable angle of attack for increased impact on a target includes an active charge and controllable initiation device for initiation of the active charge, wherein the projectile also includes at least one side-acting impulse motor for tilting the projectile relative to its trajectory from a substantially vertical position, in which the front face of the projectile is directed toward the target, into a more horizontal position, in which the outer surface of the projectile is directed toward the target.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: January 25, 2022
    Assignee: BAE SYSTEMS BOFORS AB
    Inventors: Christer Thuman, Thomas Pettersson, Mats Larsson
  • Patent number: 11187508
    Abstract: A warhead includes an outer casing and an inner shell, which delimits a central space for an explosive substance. The inner shell receives a series of preformed elements, which are arranged in contact with the outer side of the inner shell. The inner shell is arranged for a controlled fragmentation upon a detonation of the explosive substance. The preformed elements are arranged with a surface contact against the inner shell.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: November 30, 2021
    Assignee: BAE SYSTEMS BOFORS AB
    Inventors: Christer Thuman, Björn Johansson, Peter Tjernström
  • Publication number: 20210180929
    Abstract: A payload container for providing a horizontal dispersion pattern of sub-projectiles suitable for combatting surface targets is in the form of a cylinder and includes at least two sub-projectiles arranged in a core enclosed by a container wall, wherein the sub-projectiles are linearly disposed. In addition, a projectile and use of the same include at least one payload container or a plurality of sequentially arranged payload containers displaced by a displacement angle relative to each other. The displacement angle is predetermined in such way so that the sub-projectiles are vertically lined at the time when the mechanical force from the carrier shell disappears and the sub-projectiles are spread to the left and to the right, providing a horizontal dispersion pattern.
    Type: Application
    Filed: September 26, 2018
    Publication date: June 17, 2021
    Applicant: BAE SYSTEMS BOFORS AB
    Inventor: Christer THUMAN
  • Publication number: 20200355479
    Abstract: A holding device and method for decreasing the contact-impact event on sub-projectiles when fired from a barrel, cylinder, carrier shell or the like includes a core and at least two legs that at least partially enclose at least one sub-projectile each. When a projectile is fired from a barrel or the like the sub-projectiles load the legs of the device which are deformed and open up and release the sub-projectiles in a controlled manner without tumbling which leads them to hit and penetrate their target with the short-side. A holding device including sub-projectiles and a projectile including the holding device are also provided.
    Type: Application
    Filed: September 26, 2018
    Publication date: November 12, 2020
    Applicant: BAE SYSTEMS BOFORS AB
    Inventors: Christer THUMAN, Ulf HEICHE, Reijo VESA
  • Publication number: 20200340788
    Abstract: A warhead includes an outer casing and an inner shell, which delimits a central space for an explosive substance. The inner shell receives a series of preformed elements, which are arranged in contact with the outer side of the inner shell. The inner shell is arranged for a controlled fragmentation upon a detonation of the explosive substance. The preformed elements are arranged with a surface contact against the inner shell.
    Type: Application
    Filed: October 30, 2018
    Publication date: October 29, 2020
    Applicant: BAE SYSTEMS BOFORS AB
    Inventors: Christer THUMAN, Björn JOHANSSON, Peter TJERNSTRÖM
  • Publication number: 20200191537
    Abstract: A projectile with selectable angle of attack for increased impact on a target includes an active charge and controllable initiation device for initiation of the active charge, wherein the projectile also includes at least one side-acting impulse motor for tilting the projectile relative to its trajectory from a substantially vertical position, in which the front face of the projectile is directed toward the target, into a more horizontal position, in which the outer surface of the projectile is directed toward the target.
    Type: Application
    Filed: April 27, 2018
    Publication date: June 18, 2020
    Applicant: BAE SYSTEMS BOFORS AB
    Inventors: Christer THUMAN, Thomas PETTERSSON, Mats LARSSON
  • Patent number: 10502538
    Abstract: The invention relates to method for pre fragmentation of a warhead (1) comprising a warhead body (2), an explosive charge (6), a fin part (3), and a warhead shell (4) with the density ?shell wherein the warhead shell (4) comprises pre formed cavities (5), where each cavity (5) comprises at least one pre formed projectile (7) with the density ?proj and filler material or agent (8) with the density ?fill, wherein the method comprises the following steps: —pre formation of the cavities (5) in the warhead shell (4), —arrangement of at least one projectile (7) in each pre formed cavities (5), —filling of filler material or agent (8) in the cavities (5) so that the cavities (5) are filled, —treatment of the filler material or agent (8) so that the filler material or agent (8) forms a connected structure vid high adhesiveness to the projectiles (7) and to the walls of the cavity (5). The invention further relates to a pre fragmented warhead.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: December 10, 2019
    Assignee: BAE SYSTEMS BOFORS AB
    Inventors: Christer Thuman, Abraham Langlet, Ulf Heiche
  • Patent number: 9470493
    Abstract: The invention relates to a method of, with a projectile (1) comprising a reactive charge (4), combating an explosive-charged weapon unit (7), preferably an enemy shell, so that undesirable harmful effects on the environment are reduced, wherein the projectile (1) is configured to penetrate the surface (8) of the weapon unit (7) upon impact so that a passage (9) is opened into the explosive (10) of the weapon unit (7), through which passage (9) the reactive charge (4), under the influence of the kinetic energy of the projectile (1), is transferred to the explosive (10) of the weapon unit (7). The method can be deemed to be characterized in that the reactive charge (4), upon contact with the explosive (10) of the weapon unit (7), reacts and starts a hypergolic reaction with the explosive (10). The invention also relates to a projectile (1) for the said method.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: October 18, 2016
    Assignee: BAE SYSTEMS BOFORS AB
    Inventors: Christer Thuman, Kjell Wallberg, Carin Vorde
  • Publication number: 20150300795
    Abstract: The invention relates to a method of, with a projectile (1) comprising a reactive charge (4), combating an explosive-charged weapon unit (7), preferably an enemy shell, so that undesirable harmful effects on the environment are reduced, wherein the projectile (1) is configured to penetrate the surface (8) of the weapon unit (7) upon impact so that a passage (9) is opened into the explosive (10) of the weapon unit (7), through which passage (9) the reactive charge (4), under the influence of the kinetic energy of the projectile (1), is transferred to the explosive (10) of the weapon unit (7). The method can be deemed to be characterized in that the reactive charge (4), upon contact with the explosive (10) of the weapon unit (7), reacts and starts a hypergolic reaction with the explosive (10). The invention also relates to a projectile (1) for the said method.
    Type: Application
    Filed: August 6, 2014
    Publication date: October 22, 2015
    Inventors: Christer Thuman, Kjell Wallberg, Carin Vorde
  • Patent number: 9140529
    Abstract: The present invention relates to a method for packing fin-stabilized penetrators (8) in a carrier shell (1), which penetrators (8) comprise a front penetrator part (10) and a rear fin part (9, 9?) comprising fin sides (14, 14?), so that the empty space between the penetrators (8) and problems with the penetrators upon the release of the penetrators (8) from the carrier shell (1) are minimized, wherein the penetrators (8) are packed in groups (7) and are joined together to form larger packing units (6), in which each group (7) is arranged with a centrally located penetrator (8) flanked by at least three outer penetrators (8), which outer penetrators (8) are arranged so that their front penetrator parts (10) lie side to side against the fin sides (14, 14?) of the centrally located penetrator (8).
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: September 22, 2015
    Assignee: BAE Systems Bofors AB
    Inventor: Christer Thuman
  • Patent number: 8978537
    Abstract: The present invention relates to a mine protection accessory for fitting to military or civil wheeled vehicles (2) as protection against landmines (12, 12?, 12?) or homemade bombs. The mine protection ( ) is characterized in that the mine protection accessory is configured for fitting to the underside of the vehicle (2) adjacent to one of the wheels (3) of the vehicle (2), and in that the mine protection accessory comprises at least one guard plate (1, 11) configured to deflect pressure, splinters and gravel from a landmine (12, 12?, 12?) away from the underside of the vehicle (2).
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: March 17, 2015
    Assignee: BAE Systems Bofors AB
    Inventor: Christer Thuman
  • Publication number: 20150068424
    Abstract: The present invention relates to a method for packing fin-stabilized penetrators (8) in a carrier shell (1), which penetrators (8) comprise a front penetrator part (10) and a rear fin part (9, 9?) comprising fin sides (14, 14?), so that the empty space between the penetrators (8) and problems with the penetrators upon the release of the penetrators (8) from the carrier shell (1) are minimized, wherein the penetrators (8) are packed in groups (7) and are joined together to form larger packing units (6), in which each group (7) is arranged with a centrally located penetrator (8) flanked by at least three Outer penetrators (8), which outer penetrators (8) are arranged so that their front penetrator parts (10) lie side to side against the fin sides (14, 14?) of the centrally located penetrator (8).
    Type: Application
    Filed: November 18, 2014
    Publication date: March 12, 2015
    Inventor: Christer Thuman
  • Patent number: 8915189
    Abstract: The present invention relates to a method for packing fin-stabilized penetrators (8) in a carrier shell (1), which penetrators (8) comprise a front penetrator part (10) and a rear fin part (9, 9?) comprising fin sides (14, 14?), so that the empty space between the penetrators (8) and problems with the penetrators upon the release of the penetrators (8) from the carrier shell (1) are minimized, wherein the penetrators (8) are packed in groups (7) and are joined together to form larger packing units (6), in which each group (7) is arranged with a centrally located penetrator (8) flanked by at least three outer penetrators (8), which outer penetrators (8) are arranged so that their front penetrator parts (10) lie side to side against the fin sides (14, 14?) of the centrally located penetrator (8).
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: December 23, 2014
    Assignee: BAE Systems Bofors AB
    Inventor: Christer Thuman