Patents by Inventor Rolf Eisenmann

Rolf Eisenmann 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).

  • Forging die
    Patent number: 4649731
    Abstract: In a forging die including a lower die with an embossing insert, an upper die and actuating elements displaceable to form with the upper die and the lower die an embossing groove receiving a blank to be forged, a locking member, cooperating with the actuating elements, is provided to lock the latter in a closed position.
    Type: Grant
    Filed: March 5, 1985
    Date of Patent: March 17, 1987
    Assignee: Thyssen Industrie AG, Schmiedetechnik/Bergbautechnik
    Inventor: Rolf Eisenmann