Patents by Inventor Eckart Doege

Eckart Doege 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).

  • Drive apparatus for a forming machine
    Patent number: 6289754
    Abstract: A drive unit for a forming machine, comprising a rotary drive and a knuckle-joint drive for a gear transmission operating a ram, the knuckle-joint drive being operationally connected through a gear transmission to the rotary drive. To improve the drive rigidity as regards a forming machine and to be able to improve the drive-unit design and to relatively easily match the drive unit to the specific requirements of different forming methods, the gear transmission offers a periodically varying transmission ratio, at least two mutually engaging non-circular gears being used of which the pitch curves are designed in such manner that in conjunction with the knuckle-joint drive, and especially in conjunction with a subsequent crank drive, the motions of the ram will be optimally matched thereby to the particular work method.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: September 18, 2001
    Assignee: Verein Deutscher Werkzeumaschinenfabriken e. V. (VDW)
    Inventors: Eckart Doege, Martin Hindersmann, Ulrich Keller
  • Drive apparatus for a forming machine
    Patent number: 6021683
    Abstract: The invention concerns a drive unit for a forming machine, comprising a rotary drive and a knuckle-joint drive for a gear transmission operating a ram, the knuckle-joint drive being operationally connected through a gear transmission to the rotary drive. To improve the drive rigidity as regards a forming machine and to be able to improve the drive-unit design and to relatively easily match the drive unit to the specific requirements of different forming methods, the gear transmission offers a periodically varying transmission ratio, at least two mutually engaging non-circular gears being used of which the pitch curves are designed in such manner that in conjunction with the knuckle-joint drive, and especially in conjunction with a subsequent crank drive, the motions of the ram will be optimally matched thereby to the particular work method.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: February 8, 2000
    Assignee: Verein Deutscher Werkzeugmaschinenfabriken e.V. (VDW)
    Inventors: Eckart Doege, Martin Hindersmann, Ulrich Keller