Patents by Inventor Gordon Robert Dunning

Gordon Robert Dunning 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).

  • Fuser latch system
    Patent number: 6697589
    Abstract: A fuser latch system suitable for a customer replaceable fuser unit. Front holders include datum receivers on a base machine frame and datums on the fuser frame. Rear latches include retainers connected to the base machine frame, and axially translatable and rotatable shafts connected to the fuser frame. An end of the shaft is received in a retainer upon axial translation of the shaft, and locked in place upon rotation of the shaft. The rear latches bias the fuser frame for proper gear mesh and paper path alignment.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: February 24, 2004
    Assignee: Lexmark International, Inc.
    Inventors: Gordon Robert Dunning, Paul Douglas Horrall, Edward Alan Rush
  • Referencing mechanism for an imaging apparatus
    Patent number: 6535236
    Abstract: An imaging apparatus includes a machine frame, a printhead housing containing a printhead for generating a laser beam, and a position sensing device. The position sensing device includes a position sensing device frame and a position sensor for sensing a position of the laser beam. The position sensing device frame is interposed between the machine frame and the printhead housing. Each of the machine frame, the printhead housing and the position sensing device frame include at least one reference feature that in combination accurately reference the position of the printhead housing to the machine frame.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: March 18, 2003
    Assignee: Lexmark International, Inc.
    Inventors: Billy Carl Chappel, Christopher Gregory Chee, Gordon Robert Dunning, Paul Douglas Horrall
  • Encoder system with cover mounted encoder
    Patent number: 5763970
    Abstract: Sensor (41) is held between its arms (63) and nubs 60 in cover (31). A circuit board (57) on which the sensor is mounted remains outside of the cover, and panels (55) of the sensor (41) extend upward to prevent the circuit board (57) from collapsing leads (45, 53) which connect the sensor to the circuit board. Reliable operation is obtained without narrow tolerances.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: June 9, 1998
    Assignee: Lexmark International, Inc.
    Inventors: Gordon Robert Dunning, Steven Wayne Parish, Lowell Thomas Siders