Including Ground Supported, Grader Guiding Rail Patents (Class 37/383)
  • Patent number: 8205359
    Abstract: A sidewalk grader provided for grading a sidewalk base disposed along a curb of an existing road structure. The sidewalk grader comprises a tracking assembly fixable to a vertically adjustable backfill blade of a compact excavator positioned to move forward over an existing road structure to advance the sidewalk grader. The tracking assembly comprises a vertically adjustable tracking means disposed for engagement with the top surface of the curb, to provide a reference point. A grading assembly is mounted to the tracking assembly. The grading assembly comprises a frame, and a grading blade rotatingly mounted to the frame to permit adjustment of slope of the blade. An adjustable link connects the grading blade to the frame to adjustable fix their relative position.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: June 26, 2012
    Inventor: Ronald H. Gordon
  • Patent number: 5775012
    Abstract: A hitch adjustable rear blade hitched to the back of a tractor for earth grading operations. The blade having an elongated cylindrical skid releasably mounted to the back of the blade adjacent the leading edge of the blade and a pair of spaced apart stabilizer springs adjustably mounted to the front of the blade holding the blade in tensional position. A front blade having the elongated cylindrical skid releasably mounted is also disclosed.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: July 7, 1998
    Inventor: William L. Hockensmith