Patents by Inventor Hirokazu Kohda

Hirokazu Kohda 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).

  • Ink reservoir of ink jet printer
    Patent number: 4914453
    Abstract: An ink reservoir of an ink jet printer which comprises an ink tank having an ink outlet storing ink and feeding the stored ink to a nozzle (13) and a vent hole for circulating air between an external atmosphere and an internal space, an outlet opening/closing means movably provided for being able to open and close the ink outlet; vent hole opening/closing means (56) and (57) movably provided for being able to open/close the vent hole, and operation transferring means for mechanically transferring movement of the outlet opening/closing means to the vent hole opening/closing means so as to interlock the operation of the outlet opening/closing means with the operation of the vent hole opening/closing means. When the outlet opening/closing means performs its operation, the operation is transferred by the operation transferring means to open/close the vent hole opening/closing means.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: April 3, 1990
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshio Kanayama, Hirokazu Kohda