Patents by Inventor Clifford P. Duff

Clifford P. Duff 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).

  • Publication number: 20080244816
    Abstract: A toilet auger includes a first elongate tubular housing, a second elongate tubular housing, a drain cleaning cable, a driven member, and a feed mechanism. The first elongate tubular housing includes a rotational axis. The second elongate tubular housing receives at least a portion of the first housing. The drain cleaning cable is disposed in the first housing and includes a portion disposed generally along the rotational axis. The cable operatively engages the first housing such that rotation of the first housing about the rotational axis causes the cable to rotate generally in the rotational axis. The driven member connects to the first housing for rotating the first housing about the rotational axis to rotate at least a portion of the drain cable generally in the rotational axis. The feed mechanism engages the cable and is configured to axially displace the cable as the cable rotates generally in the rotational axis. A method for removing an obstruction from a toilet drain is also disclosed.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 9, 2008
    Applicant: EMERSON ELECTRIC CO.
    Inventors: Larry F. Babb, Clifford P. Duff
  • Publication number: 20080148503
    Abstract: A monitoring assembly for indicating the length of a sewer drain cleaning snake or flexible cable is described. The assembly provides a visual indication as to the length of cable that has been administered from, or retracted into, a sewer or drain cleaning device. The assembly is particularly adapted for use in hand held cleaning devices.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Larry F. Babb, Clifford P. Duff, Michael J. Rutkowski