Patents by Inventor Ellwyn St. Louis

Ellwyn St. Louis 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).

  • Hydraulic toilet seat
    Patent number: 5063617
    Abstract: An hydraulic toilet seat assembly utilizes available household water pressure to lift, elevate and lower a toilet seat so as to facilitate mounting and dismounting by a person who is disabled or infirm. As the seat rises it assumes a forwardly pitched orientation to further facilitate use. A positive displacement fluid divider unit delivers to hydraulic motors appropriate volumes of water to drive motor pistons through different distances, so as to produce the desired seat inclination.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: November 12, 1991
    Inventors: Walter J. Ward, Ellwyn St. Louis, Frederick A. Ward