Patents by Inventor Hans-Otto Ramm

Hans-Otto Ramm 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).

  • Slag crusher
    Patent number: 7322538
    Abstract: Slag crusher having a shaft extending through a pressure housing which shaft is provided with inlet baffle plates in a funnel-shaped arrangement, stationary cutting knives and cutting knives rotating on the shaft. The shaft is offset with respect to the vertical center line of the pressure housing, so that the crushing area is concentrated in the middle of the slag crusher. The rotating cutting knives are angularly offset on the periphery of the shaft, so that only one rotating knife and two stationary knives are in engagement at a time.
    Type: Grant
    Filed: November 26, 1998
    Date of Patent: January 29, 2008
    Assignee: Metallgesellschaft AG
    Inventors: Wolfram Gruhlke, Hans-Otto Ramm