Patents by Inventor Jan STUHRMANN

Jan STUHRMANN 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).

  • Publication number: 20240174036
    Abstract: A motor vehicle support member 1 is described having a structured shell 5 having a wall W, into which wall 5 a recess is introduced, and having a bushing 4 held in the recess of wall 5 for receiving and/or mounting another component connectable thereto, wherein the recess has a conical collar 6, flared in the longitudinal direction of the bushing 4, as a receptacle for the bushing 4, to which the bushing 4 is fixed, wherein the bushing 4 includes a conical lateral surface 7 in the section in which it is fixed to the collar (6, 6a . . . 6f). A method for producing such a support member 1 is also described.
    Type: Application
    Filed: March 22, 2022
    Publication date: May 30, 2024
    Inventors: Alexander Günther, Phil GRÜSSING, Jan Stuhrmann, Marc Horlacher
  • Publication number: 20240165743
    Abstract: A method is described for laser welding two joining partners (1d, 2d) made of a metal material and held together in a lap joint, wherein the first joining partner (1d) includes a joining flange (3) having a joint and the second joining partner (2d) includes a joining zone (6d) on a flat side, wherein for the process of laser welding, the first joining partner (1d) is held contacting the joining zone (6d) of the second joining partner (2d) with one side of its joining flange (3d), wherein between the two joining partners (1d, 2d), a gap (10d) widening in the direction pointing away from the side to which the laser is applied is provided and the laser beam (7) is directed in the fillet formed by joining zone (6d) and joining flange (3d) at an angle ? of 1° to 45° in relation to the plane of the joining zone 6d and the welding is carried out so that the weld seam (12) formed extends into the gap 10d and in this way in the gap (10d) a gap base SB is formed, by which the opposing surfaces of the joining partners (
    Type: Application
    Filed: March 22, 2022
    Publication date: May 23, 2024
    Inventors: Jan STUHRMANN, Christian DAHMEN
  • Patent number: 11969825
    Abstract: The invention relates to a method for laser welding the end faces of the joints (5, 6) of two connecting flanges (3, 4), which are held in an adjoining manner, of two connecting partners (1, 2) made of a steel material. According to the method, in addition to being moved in the advancement direction, which follows the longitudinal extension of the joints (5, 6), the welding laser beam (8) is moved back and forth in an oscillating manner transversely to the advancement direction. At least one of the two connecting partners (1, 2) to be welded at the connecting flange (3, 4) joints (5, 6) is equipped with a metal coating at least in the region of the respective connecting flange (3, 4).
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: April 30, 2024
    Assignee: KIRCHHOFF AUTOMOTIVE DEUTSCHLAND GMBH
    Inventor: Jan Stuhrmann
  • Publication number: 20240123549
    Abstract: A description is given of a method for the laser welding of two parts to be joined (1) that are positioned in relation to one another, in which method the laser head, with the laser beam (9) emitted from it, and the two parts to be joined (1), with the joint (3) thereof, are moved in relation to one another in a feeding direction along the longitudinal extent of the joint (3) and the laser beam (9) produces in the joint (3) a weld seam with a target welding-in depth (8) which is deeper than the critical welding-in depth of the parts to be joined (1), wherein the welding method is performed in two steps and, to form the weld seam connecting the two parts to be joined (1), in a first step material in the joint (3) is melted by the laser beam (9) down to the target welding-in depth (8) and wherein, in a subsequent step, the weld seam produced by the first step is melted once again down to a welding-in depth which, as a maximum, corresponds to the critical welding-in depth of the parts to be joined (1).
    Type: Application
    Filed: February 22, 2022
    Publication date: April 18, 2024
    Inventors: Jan STUHRMANN, Christian DAHMEN
  • Patent number: 11358238
    Abstract: A method for laser welding the end faces of joints of two connecting flanges, which are held against each other, of two connecting partners made from a steel material, of which at least one is provided with a metallic coating with an evaporation temperature that is below the melting temperature of the steel material. The method is carried out such that, for the process of laser welding, the connecting flanges of the two connecting partners are held against each other enclosing an angle that opens pointing in a direction from the joint side on which the laser is applied, as a result of which a degassing gap, which increases in the direction of heat introduction, is provided between the connecting flanges, through which degassing gap evaporation products of the coating material resulting from the introduction of heat are carried off.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: June 14, 2022
    Assignee: KIRCHHOFF AUTOMOTIVE DEUTSCHLAND GMBH
    Inventors: Jan Stuhrmann, Christian Dahmen
  • Publication number: 20190375047
    Abstract: The invention relates to a method for laser welding the end faces of joints (2, 2.1) of two connecting flanges, which are held against each other, of two connecting partners (1, 1.1) made from a steel material, of which at least one is provided with a metallic coating with an evaporation temperature that is below the melting temperature of the steel material. The method is carried out such that, for the process of laser welding, the connecting flanges (1, 1.1) of the two connecting partners (1, 1.1) are held against each other enclosing an angle that opens pointing in a direction from the joint side on which the laser is applied, as a result of which a degassing gap (5), which increases in the direction of heat introduction, is provided between the connecting flanges (3, 3.1), through which degassing gap evaporation products of the coating material (8, 8.1) resulting from the introduction of heat are carried off.
    Type: Application
    Filed: March 19, 2018
    Publication date: December 12, 2019
    Inventors: Jan Stuhrmann, Christian Dahmen
  • Publication number: 20180117712
    Abstract: The invention relates to a method for laser welding the end faces of the joints (5, 6) of two connecting flanges (3, 4), which are held in an adjoining manner, of two connecting partners (1, 2) made of a steel material. According to the method, in addition to being moved in the advancement direction, which follows the longitudinal extension of the joints (5, 6), the welding laser beam (8) is moved back and forth in an oscillating manner transversely to the advancement direction. At least one of the two connecting partners (1, 2) to be welded at the connecting flange (3, 4) joints (5, 6) is equipped with a metal coating at least in the region of the respective connecting flange (3, 4).
    Type: Application
    Filed: April 8, 2016
    Publication date: May 3, 2018
    Inventor: Jan STUHRMANN