Patents by Inventor Keisuke Fujimaru

Keisuke Fujimaru 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).

  • Sheet feeding apparatus
    Patent number: 6672580
    Abstract: A sheet feeding apparatus comprises a pressure plate disposed at a position where sheets first hit the same and a separation plate for separating the sheets. The pressure plate and the separation plate are rotatable independently of each other. The pressure plate is pressed by one spring, while the separation plate is pressed by another spring, against sheet feed roller independently of each other.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: January 6, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroshi Shibata, Yoshihiro Tsumori, Yasuhiro Minami, Keisuke Fujimaru
  • Sheet feeding apparatus
    Publication number: 20030062668
    Abstract: With an aim to provide a sheet feeding apparatus in which multi-picking of sheets by the sheet feed roller is obviated even when stacked sheets are inserted with a rush, the invention comprises pressure plate 4 disposed at a position where sheets first hit the same and separation plate 60 for separating sheets, both of which are rotatable independently of each other. Pressure plate 4 is pressed by spring 50, while separation plate 60 is pressed by spring 70, against sheet feed roller 3 independently of each other.
    Type: Application
    Filed: August 30, 2002
    Publication date: April 3, 2003
    Inventors: Hiroshi Shibata, Yoshihiro Tsumori, Yasuhiro Minami, Keisuke Fujimaru