Patents by Inventor Ann Hardwick Smith

Ann Hardwick Smith 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).

  • Bath tub lift chair apparatus
    Patent number: 4091478
    Abstract: An apparatus for raising and lowering invalids into a bath tub having a frame that fits onto the bath tub with a chair rockably mounted to the frame. The frame has a vertically extending and rotatably mounted, externally threaded member; and a chair supporting frame portion has an internally threaded sleeve riding thereon and supporting the chair. The chair is rockably mounted to the chair support frame and interconnected with a ratchet so as to rotate the elongated, threaded member with the ratchet as the chair rocks back and forth.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: May 30, 1978
    Inventors: Charles W. Hardwick, Ann Hardwick Smith, Kinnaman Browning Smith
  • Bath tub lift chair apparatus
    Patent number: 4034426
    Abstract: An apparatus for raising and lowering invalids in a bath tub chair having a frame that fits into the bathtub with a chair rockably mounted to the frame. The frame has vertically extending gear racks while the rocking chair has a ratcheting gear attached thereto so that the rocking of the chair can be used to raise or lower the chair by its occupant.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: July 12, 1977
    Inventors: Charles W. Hardwick, Ann Hardwick Smith, Kinnaman Browning Smith