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