Patents by Inventor Todd J. Marquardsen

Todd J. Marquardsen 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).

  • Replaceable tooth mount rotor system for waste fragmenting machines
    Patent number: 8066213
    Abstract: Advantageously, certain embodiments of the present invention provide a system that allows easy replacement of one or more worn rotor teeth and/or rotor tooth mount(s) mounted on a waste fragmenting machine. The present invention may further provide a system that allows minimization of stress during fragmentation on the attachment mechanisms between the mount and the rotor.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: November 29, 2011
    Assignee: Rotochopper, Inc.
    Inventor: Todd J. Marquardsen
  • REPLACEABLE TOOTH MOUNT ROTOR SYSTEM FOR WASTE FRAGMENTING MACHINES
    Publication number: 20110226880
    Abstract: Advantageously, certain embodiments of the present invention provide a system that allows easy replacement of one or more worn rotor teeth and/or rotor tooth mount(s) mounted on a waste fragmenting machine. The present invention may further provide a system that allows minimization of stress during fragmentation on the attachment mechanisms between the mount and the rotor.
    Type: Application
    Filed: March 22, 2010
    Publication date: September 22, 2011
    Applicant: ROTOCHOPPER
    Inventor: Todd J. Marquardsen
  • Device and method for improving grinding efficacy in gravity-fed grinding machines
    Patent number: 7946513
    Abstract: The present invention regulates the delivery of feedstock to the fragmentation zone in a gravity-fed comminuting machine and reduces the ejection of feed materials by means of a rotating cylinder located at an offset position above the rotor. Rotationally mounted on an axis parallel to and above, but offset from, the axis of the rotor, this cylinder serves primarily as a striking surface, or anvil. The continual rotation of the anvil, in the opposite rotational direction as the rotor and with much slower rotational speed, assists in agitating the feed material, alleviating the problems of feed chute obstructions and feed aggregation. The cylinder forces the feed materials into contact with the rotor teeth through continuous rotation and provides a novel tooth design to improve efficacy and reduce wear.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: May 24, 2011
    Inventors: Jamey O. Brick, Douglas G. Meyer, Nick D. Lieser, Dennis D. Finken, Todd J. Marquardsen
  • DEVICE AND METHOD FOR IMPROVING GRINDING EFFICACY IN GRAVITY-FED GRINDING MACHINES
    Publication number: 20090108110
    Abstract: The present invention regulates the delivery of feedstock to the fragmentation zone in a gravity-fed comminuting machine and reduces the ejection of feed materials by means of a rotating cylinder located at an offset position above the rotor. Rotationally mounted on an axis parallel to and above, but offset from, the axis of the rotor, this cylinder serves primarily as a striking surface, or anvil. The continual rotation of the anvil, in the opposite rotational direction as the rotor and with much slower rotational speed, assists in agitating the feed material, alleviating the problems of feed chute obstructions and feed aggregation. The cylinder forces the feed materials into contact with the rotor teeth through continuous rotation and provides a novel tooth design to improve efficacy and reduce wear.
    Type: Application
    Filed: October 24, 2008
    Publication date: April 30, 2009
    Inventors: Jamey O. Brick, Douglas G. Meyer, Nick D. Lieser, Dennis D. Finken, Todd J. Marquardsen