Patents Assigned to Tower Automotive Technology Products, Inc.
  • Patent number: 6679417
    Abstract: An efficient and effective process for manufacturing of hardened aluminum components is achieved by coordinating the material preparation steps with the forming steps. The resulting product is a hardened aluminum component with desirable strength characteristics. The process includes initial heating of sheet material in order to prepare it for further processing. The sheet material is then quenched to promote appropriate material conditioning. A product forming sub-process is then undertaken in a relatively short period of time following the quenching. The product forming is done while the material is in a relatively ductile condition, thus easing forming operations, and avoiding product spring-back problems. Lastly, the component is naturally aged, to provide the final hardening operations. The resulting product has very desirable strength characteristics, due to the combined forming and hardening process.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: January 20, 2004
    Assignee: Tower Automotive Technology Products, Inc.
    Inventors: Lawrence M. Dziadosz, Clarence W. Fulton
  • Patent number: 6626351
    Abstract: By utilizing a roll bonding process and appropriately forming steps, a load bearing structure is created which is capable of handling and appropriately transferring loads. One preferred method includes the combination of roll bonding and hydroforming to efficiently create structural components. While various product configurations are possible, one version includes a waffle-type structure produced by appropriate roll bonding of material sheets. This waffle-type structure can also undergo additional forming steps to create several structural components capable of handling and carrying loads in a very efficient and effective manner. More significantly, this process enables the use of structural aluminum for load bearing components which are efficiently and cost effective when manufactured.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: September 30, 2003
    Assignee: Tower Automotive Technology Products, Inc.
    Inventors: Lawrence M. Dziadosz, Clarence W. Fulton
  • Patent number: 6619533
    Abstract: Link arms for use in suspension systems are produced through an extrusion and friction stir welding process. Blocks having an eye and a planar body section are formed through an extrusion process. These sections are then paired together and joined through friction stir welding. The welded joint(s) is/are positioned in such a location so as to not impact the structural integrity of the completed component. Through this process it is possible to construct cost competitive link arms having the same or better structural integrity as previously employed steel link arms while achieving dramatic weight reductions.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: September 16, 2003
    Assignee: Tower Automotive Technology Products, Inc.
    Inventors: Jon Hootman, John F. Hinrichs, Jeffrey S. Noruk, Mike Gall, Phillip C. Ruehl