Patents by Inventor Yukio Oosawa

Yukio Oosawa 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).

  • Document feeder
    Patent number: 6017031
    Abstract: A document feeder of the invention is formed of a sheet feeding tray for receiving sheets or documents thereon; a feeding device for feeding the sheets on the sheet feeding tray in order; and a feeding roller for feeding the sheets transferred from the feeding device in a sheet feeding direction and having at least one space extending in a direction perpendicular to the sheet feeding direction. The document feeder further includes at least first and second separating devices. The first separating device is formed of a frictional member having a frictional coefficient relative to a sheet greater than that between the sheets. The first separating device contacts the feeding roller and permits one sheet to pass therebetween. The second separating device is formed of an elastic member and has at least one tongue piece with a forward end. The forward end is located in the space of the feeding roller for separating the sheets between the forward end and the feeding roller.
    Type: Grant
    Filed: January 7, 1997
    Date of Patent: January 25, 2000
    Assignee: Nisca Corporation
    Inventors: Yukio Oosawa, Masahiro Ogawa, Toshihiro Kubodera