Patents Assigned to WKW Erbsloh Automotive GmbH
  • Patent number: 7197907
    Abstract: The invention relates to a method for producing a plurality of bent extruded profiles (4; 5) from a light metal or light metal alloy, which is characterized by the following steps: simultaneously extruding at least two extruded profiles (4; 5) that are mirror-symmetric with respect to their cross-sectional shape while using an extrusion device (1), said extrusion device comprising an extrusion die (2) with an extrusion matrix forming the at least two extruded profiles (4; 5); at the same time bending the at least two extruded profiles (4; 5), while bending, when viewing the direction of extrusion and in a horizontal plane of viewing including the direction of extrusion, at least one of the extruded profiles (4; 5) or the projection thereof into the plane of viewing with a curvature that has a sign opposite the sign of the curvature with which at least one additional extrusion profile (5) or the projection thereof into the plane of viewing is bent.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: April 3, 2007
    Assignee: WKW Erbsloh Automotive GmbH
    Inventor: Alf Birkenstock
  • Patent number: 6862911
    Abstract: A method for cutting a hollow extruded profile section into lengths in a press flow, wherein the extruded profile section is bent upon exit from the press either simultaneously with or directly after the forming extrusion process by a force acting thereon in a transversal manner in relation to the direction of the extruding press, and a force component acts as a traction of pressure force during the forming extrusion process on the cross-sectional area of the hollow-profile walls thus arising. The bent extruded profile section is cut in the press flow by the mechanical action of a saw, whereby force exerted on the extruded profile section during cutting is compensated by a supporting device arranged adjacent to the extruded profile section, so that deformation of the bent extruded profile section is prevented.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: March 8, 2005
    Assignee: WKW Erbsloh Automotive GmbH
    Inventors: Alf Birkenstock, Markus Jandewerth, Paul Hinzmann