Patents by Inventor Robert N. O'Donnell

Robert N. O'Donnell 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).

  • Waste material handling container with liquid tight door seal
    Patent number: 4545523
    Abstract: A waste material handling container for sludges and the like having a liquid tight seal between a container door and its associated opening. The seal comprises a heavily armored resilient element and a cooperating rigid element arranged to engage the unarmored portion of the resilient sealing element through a gap in its armor. The container includes a system for selectively adjusting pressure on the door to apply a substantially uniformly distributed pressure on the resilient sealing element. The latter is formed of natural rubber having good resistance to a wide range of aggressive chemical wastes.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: October 8, 1985
    Assignee: Galbreath Incorporated
    Inventors: Donald E. Galbreath, Brooks Roudebush, Robert N. O'Donnell