Patents by Inventor Ronald J. DePlazes

Ronald J. DePlazes 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).

  • Patent number: 4815542
    Abstract: An attachment for a box-scraper. The box-scraper includes a pair of spaced apart walls each having a lower edge; a horizontally oriented frame member mounted intermediate the side walls; and, an elongate blade mounted intermediate the walls and having a leading edge. The attachment facilitates leveling of the ground and includes a first horizontally oriented member having a lower ground engaging surface; a pair of flange portions upwardly depending from the first elongate member and each having an upper surface normally bearing against the lower edge of one of the side walls, at least one of the flange portions having an inner wall normally bearing against the leading edge of the blade; and, apparatus connected to the attachment and the frame to maintain the attachment in position on the box-scraper.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: March 28, 1989
    Inventor: Ronald J. DePlazes