Patents by Inventor Robert N. Mills

Robert N. Mills 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).

  • Concrete mold form
    Patent number: 11701795
    Abstract: A concrete mold form (10) is provided to form concrete products such as concrete bridge girder (12). The form (10) has first and second side forms (14, 16) which are supported on carriages (22) riding on tracks (24) for moving the side forms (14, 16) between a closed position to cast the product and an open position to allow the cast product to be removed. At least one of the carriages (22) is a powered carriage (22P, 22M) which rotates a roller (28, 70) engaging the track with a hydraulic motor (38) to move the side form between the closed and open positions.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: July 18, 2023
    Assignee: Hamilton Form Company, Ltd.
    Inventors: Joel A. Whalen, Taylor A. Slate, Robert N. Mills, Glenn R. Prewett, Garrett W. Ollmann