Patents by Inventor Harry L. Doss

Harry L. Doss 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).

  • Grading machine
    Patent number: 4411323
    Abstract: A grading machine (10) is disclosed. The grading machine (10) includes a main frame (14), a center frame (16), and a rear frame (18). A grading blade (20) is connected to the main frame (14) for pivotable motion about a vertical axis. A pair of spaced wheels (22) is carried by the rear frame (18). The tilt of the blade (20) can be adjusted by rotating the center frame (16) and the main frame (14) connected thereto about a horizontal axis extending in the direction of travel of the machine (10). The height of the blade (20) can be adjusted by adjusting the angular relationship between the center frame (16) and the main frame (14) about a second horizontal axis of a coupling rod (96).
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: October 25, 1983
    Inventor: Harry L. Doss