Patents by Inventor Patrick A. Buxton

Patrick A. Buxton 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).

  • Jam-door open sensing using media sensor and method for use thereof
    Patent number: 7744077
    Abstract: An open jam-door sensor having a peripheral device such as a printer including a substantially C-shaped feed path, the C-shaped feed path defining an inner guide and an outer guide, the outer guide being connected to the peripheral device. A media sensor for detecting type of media in the device is disposed on one of said guide opposite a reflective portion disposed on the other of said guides. The media sensor also being used to detect when the outer guide is in an open position and causing a processor to inhibit device operations, such as printing.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: June 29, 2010
    Assignee: Lexmark International, Inc.
    Inventors: Patrick A. Buxton, Kevin M. Johnson, Michael W. Lawrence, Mahesan Chelvayohan
  • Feed assist assembly
    Patent number: 7654513
    Abstract: A media feedpath having a feed assist roller, comprises a media feedpath having a C-shaped portion, a media input and a feed roll nip, an input roller feeding media from the media input, a feed assist roller downstream of the C-shaped portion of the media feedpath, the feed assist roller assisting media indexing through the media feedpath on a single side and without an opposed pinch roller, the feed roll nip having a driven roller and a feed roll pinch roll opposite the driven roll, the feed assist roller being driven by a toggle gear transmission from the driven roller of the feed roll nip, the gear train adapted for toggling to operably engage or disengage the feed assist roller depending on a driving direction of the driven roller of the feed roll nip.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: February 2, 2010
    Assignee: Lexmark International, Inc.
    Inventors: Patrick A. Buxton, Kevin M. Johnson, Michael W. Lawrence
  • Feed assist assembly
    Publication number: 20090236800
    Abstract: A media feedpath having a feed assist roller, comprises a media feedpath having a C-shaped portion, a media input and a feed roll nip, an input roller feeding media from the media input, a feed assist roller downstream of the C-shaped portion of the media feedpath, the feed assist roller assisting media indexing through the media feedpath on a single side and without an opposed pinch roller, the feed roll nip having a driven roller and a feed roll pinch roll opposite the driven roll, the feed assist roller being driven by a toggle gear transmission from the driven roller of the feed roll nip, the gear train adapted for toggling to operably engage or disengage the feed assist roller depending on a driving direction of the driven roller of the feed roll nip.
    Type: Application
    Filed: March 20, 2008
    Publication date: September 24, 2009
    Inventors: Patrick A. Buxton, Kevin M. Johnson, Michael W. Lawrence