Patents by Inventor Michael Walter Keyes

Michael Walter Keyes 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).

  • Print head shutter
    Patent number: 6726306
    Abstract: A shutter for a print head of a print cartridge is provided. The shutter includes a cover movably attachable to the print cartridge. The cover is movable between a closed position to cover the print head and an open position to expose the print head. An arm is pivotally attachable to the print cartridge and is movably attached to the cover. A biasing device for biasing the cover in the closed position is attached to the arm and is attachable to the print cartridge.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: April 27, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Michael Walter Keyes, David A. Bradley, Jr.
  • Print head shutter
    Publication number: 20040008235
    Abstract: A shutter for a print head of a print cartridge is provided. The shutter includes a cover movably attachable to the print cartridge. The cover is movable between a closed position to cover the print head and an open position to expose the print head. An arm is pivotally attachable to the print cartridge and is movably attached to the cover. A biasing device for biasing the cover in the closed position is attached to the arm and is attachable to the print cartridge.
    Type: Application
    Filed: July 10, 2002
    Publication date: January 15, 2004
    Inventors: Michael Walter Keyes, David A. Bradley