Patents by Inventor Donald B. Gorrell

Donald B. Gorrell 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).

  • Drive screw pile
    Patent number: 4650372
    Abstract: A drivable pile with a plurality of helical flanges affixed radially symmetrically about the external surface of an elongated pile member. In a preferred embodiment, two flanges are diametrically opposed at radial positions 180.degree. apart with an axial pitch of 30.degree. to the longitudinal axis. The helical flanges complete a sum total of approximately one turn along a portion of the length of the pile member and are removed slightly from the lower end of the pile.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: March 17, 1987
    Assignee: The Dow Chemical Company
    Inventor: Donald B. Gorrell