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).
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Patent number: 11953299Abstract: 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: GrantFiled: March 9, 2020Date of Patent: April 9, 2024Assignee: BAE SYSTEMS BOFORS ABInventors: Christer Thuman, Björn Johansson, Hamzah Hamdan
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Publication number: 20230358519Abstract: 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: ApplicationFiled: February 1, 2021Publication date: November 9, 2023Applicant: BAE SYSTEMS BOFORS ABInventors: Christer THUMAN, Hamzah HAMDAN, Björn JOHANSSON
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Patent number: 11725918Abstract: 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: GrantFiled: September 26, 2018Date of Patent: August 15, 2023Assignee: BAE SYSTEMS BOFORS ABInventor: Christer Thuman
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Publication number: 20230194222Abstract: 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: ApplicationFiled: May 4, 2021Publication date: June 22, 2023Applicant: BAE SYSTEMS BOFORS ABInventors: Anders HAGBERG, Christer THUMAN
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Publication number: 20220155045Abstract: 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: ApplicationFiled: March 9, 2020Publication date: May 19, 2022Applicant: BAE SYSTEMS BOFORS ABInventors: Hamzah HAMDAN, Christer THUMAN, Björn JOHANSSON
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Publication number: 20220155046Abstract: 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: ApplicationFiled: March 9, 2020Publication date: May 19, 2022Applicant: BAE SYSTEMS BOFORS ABInventors: Christer THUMAN, Björn JOHANSSON, Hamzah HAMDAN
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Patent number: 11236980Abstract: 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: GrantFiled: September 26, 2018Date of Patent: February 1, 2022Assignee: BAE SYSTEMS BOFORS ABInventors: Christer Thuman, Ulf Heiche, Reijo Vesa
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Patent number: 11231259Abstract: 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: GrantFiled: April 27, 2018Date of Patent: January 25, 2022Assignee: BAE SYSTEMS BOFORS ABInventors: Christer Thuman, Thomas Pettersson, Mats Larsson
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Patent number: 11187508Abstract: 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: GrantFiled: October 30, 2018Date of Patent: November 30, 2021Assignee: BAE SYSTEMS BOFORS ABInventors: Christer Thuman, Björn Johansson, Peter Tjernström
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Publication number: 20210180929Abstract: 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: ApplicationFiled: September 26, 2018Publication date: June 17, 2021Applicant: BAE SYSTEMS BOFORS ABInventor: Christer THUMAN
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Publication number: 20200355479Abstract: 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: ApplicationFiled: September 26, 2018Publication date: November 12, 2020Applicant: BAE SYSTEMS BOFORS ABInventors: Christer THUMAN, Ulf HEICHE, Reijo VESA
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Publication number: 20200340788Abstract: 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: ApplicationFiled: October 30, 2018Publication date: October 29, 2020Applicant: BAE SYSTEMS BOFORS ABInventors: Christer THUMAN, Björn JOHANSSON, Peter TJERNSTRÖM
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Publication number: 20200191537Abstract: 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: ApplicationFiled: April 27, 2018Publication date: June 18, 2020Applicant: BAE SYSTEMS BOFORS ABInventors: Christer THUMAN, Thomas PETTERSSON, Mats LARSSON
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Patent number: 10502538Abstract: 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: GrantFiled: April 26, 2017Date of Patent: December 10, 2019Assignee: BAE SYSTEMS BOFORS ABInventors: Christer Thuman, Abraham Langlet, Ulf Heiche
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Patent number: 9470493Abstract: 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: GrantFiled: August 6, 2014Date of Patent: October 18, 2016Assignee: BAE SYSTEMS BOFORS ABInventors: Christer Thuman, Kjell Wallberg, Carin Vorde
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Publication number: 20150300795Abstract: 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: ApplicationFiled: August 6, 2014Publication date: October 22, 2015Inventors: Christer Thuman, Kjell Wallberg, Carin Vorde
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Patent number: 9140529Abstract: 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: GrantFiled: November 18, 2014Date of Patent: September 22, 2015Assignee: BAE Systems Bofors ABInventor: Christer Thuman
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Patent number: 8978537Abstract: 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: GrantFiled: November 24, 2011Date of Patent: March 17, 2015Assignee: BAE Systems Bofors ABInventor: Christer Thuman
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Publication number: 20150068424Abstract: 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: ApplicationFiled: November 18, 2014Publication date: March 12, 2015Inventor: Christer Thuman
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Patent number: 8915189Abstract: 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: GrantFiled: March 10, 2011Date of Patent: December 23, 2014Assignee: BAE Systems Bofors ABInventor: Christer Thuman