Patents by Inventor Robert Clark DuBois

Robert Clark DuBois 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).

  • Electrostatic copier including means for detaching paper from a photoconductor
    Patent number: 4013359
    Abstract: In combination with paper conveying apparatus in an electrostatic copier, including a movable photoconductor adapted to be electrically energized from a source of supply of electrostatic charge for attaching thereto a sheet of paper for movement therewith, there is described structure for detaching the sheet from the moving photoconductor. The structure includes the provision of one or more apertures in the photoconductor and finger means movable at least partially through the apertures, as the photoconductor is moving, for urging a portion of the attached sheet of paper away from the photoconductor. In addition, the structure preferably includes vacuum header means for urging the remainder of the attached sheet of paper away from the moving photoconductor.
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: March 22, 1977
    Assignee: Pitney-Bowes, Inc.
    Inventors: Robert Clark DuBois, Eugene Patrick Lavin, Joseph F. Miciukiewicz