Patents by Inventor John Ponasik

John Ponasik 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).

  • Adjustment mechanism utilizing a variable displacement motor for a rock crusher
    Patent number: 6513738
    Abstract: A rock crushing system or conical rock crusher includes a bowl which is threadably engaged to a main frame. The bowl can be adjusted with respect to the main frame at more than one speed by utilizing a gap adjustment mechanism including a variable displacement hydraulic motor. Preferably, a set of two variable displacement hydraulic motor units can be utilized to drive the bowl with respect to the frame at a lower torque, higher speed setting and at a higher torque, lower speed setting.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: February 4, 2003
    Assignee: Metso Minerals Industries, Inc.
    Inventors: Thomas G. Braun, John Ponasik