Patents by Inventor Thomas A. Prentiss

Thomas A. Prentiss 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).

  • Cleaning brush having fibers of different lengths
    Patent number: 5923940
    Abstract: An apparatus and printing machine that contain a cleaner brush with long sweeper fibers orientated along the overall width of the brush, and having a greater length than the majority of fibers of the brush to remove the particles that adhere to the cleaner housing and thus, prevent toner droppings.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: July 13, 1999
    Assignee: Xerox Corporation
    Inventors: Steven W. Baldwin, Dennis G. Gerbasi, Thomas A. Prentiss, David R. Stookey, Bruce E. Thayer, Ralph J. Weber, Matthew P. Daniels, James J. Teich, Moritz P. Wagner
  • Monitoring cleaning performance to predict cleaner life
    Patent number: 5903797
    Abstract: A method, apparatus and printing machine are disclosed that contain a monitoring system that includes a sensor and artificial stress conditions to determine the cleaner brush life. A comparative analysis is performed from the data provided by the monitoring system of a normal cleaning residual toner particle mass and artificial stress conditions cleaning residual toner particle mass to predict brush cleaner life reliably.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: May 11, 1999
    Assignee: Xerox Corporation
    Inventors: Matthew P. Daniels, Dennis G. Gerbasi, Thomas A. Prentiss, David R. Stookey, James J. Teich, Bruce E. Thayer, Moritz P. Wagner, Ralph J. Weber