Patents by Inventor Ralf Duning

Ralf Duning 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: 5863103
    Abstract: A light-metal strip wheel, in particular for motor vehicles, which includes a wheel disk and a rim. The wheel disk comprises two wheel-disk parts each having a ventilation hole. The ventilation holes have necks that when pressed into one another, secure together the two wheel-disk parts with the two parts separated from one another in the region surrounding the ventilation holes, while coming to rest on one another in a hub region. The space between the two wheel-disk parts in the region surrounding the ventilation holes increases the stiffness of the strip wheel so that the wheel is suitable for accommodating large loads.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: January 26, 1999
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Meinhard Bonning, Ralf Duning, Uwe Gohrbandt, Gerhard Sollner
  • Patent number: 5806395
    Abstract: Method and apparatus for removing an edge fin produced on a workpiece surface during the production of metal rim reinforcement strips. The edge fin is removed after the rim is clamped in the longitudinal direction by cutting a lateral incision into the edge fin along the longitudinal direction just above the workpiece surface. The cutting tool may be stationary blades or roll blades, the latter blades cooperating with a support for the edge fin during lateral cutting.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: September 15, 1998
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Hans-Joachim Dafler, Ralf Duning, Uwe Gohrbandt, Helmut Tummler