Patents by Inventor Dana E. Schroeder

Dana E. Schroeder 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).

  • Bi-directional surface leveling system
    Patent number: 6168348
    Abstract: A bi-directional surface leveling system comprises a chassis attachable to a motion source and having a hitch, a grader frame pivotably connected to the hitch and supporting a box grader, and a forward frame pivotably attached to the grader frame and having a caster wheel for supporting the chassis. The box grader holds a bi-directional earth grading tool. Also included is a damping assembly attached to the hitch to dampen upward movement of the grader frame. A powered assembly is pivotably connected at one end to the forward frame and at the opposing end to the grader frame, and a control unit connected to the power assembly selectively extends and retracts the power assembly.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: January 2, 2001
    Assignee: Southern Laser, Inc.
    Inventors: Frederick A. Meyer, Robert W. Crowley, Dana E. Schroeder