Patents by Inventor Shigenori Hato

Shigenori Hato 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).

  • Suction tool for an electric vacuum cleaner
    Patent number: 6189180
    Abstract: A suction tool for an electric vacuum cleaner includes: a suction tool body which is connected to the vacuum cleaner body and has a suction inflow passage therein for conducting a suction air stream from a suction port, to the vacuum cleaner body; and a movable brush which is provided inside the suction inflow passage formed in the suction tool body and is driven by a driver device. In this tool, the movable brush sways and reciprocates back and forth about a support shaft, perpendicular to the direction of the suction inflow stream. Alternatively, the tool may have a linear motor which operates so as to reciprocate a rod which is liked at one end of it with oscillatory plate pivoted inside the suction tool. Further, this movable brush may be formed of a unit which is composed of a sweeping member having a pair of front and rear sweeping parts and a moving brushing part embedded in between, wherein the front sweeping part is shorter than the rear sweeping part.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: February 20, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shigenori Hato, Mikio Yagi, Noriaki Miyoshi, Kiyoshi Ishii, Yuji Ohnishi
  • Suction tool for an electric vacuum cleaner
    Patent number: 5901411
    Abstract: A suction tool for an electric vacuum cleaner includes: a suction tool body which is connected to the vacuum cleaner body and has a suction inflow passage therein for conducting a suction air stream from a suction port, to the vacuum cleaner body; and a movable brush which is provided inside the suction inflow passage formed in the suction tool body and is driven by a driver device. In this tool, the movable brush sways and reciprocates back and forth about a support shaft, perpendicular to the direction of the suction inflow stream. Alternatively, the tool may have a linear motor which operates so as to reciprocate a rod which is liked at one end of it with oscillatory plate pivoted inside the suction tool. Further, this movable brush may be formed of a unit which is composed of a sweeping member having a pair of front and rear sweeping parts and a moving brushing part embedded in between, wherein the front sweeping part is shorter than the rear sweeping part.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: May 11, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shigenori Hato, Mikio Yagi, Noriaki Miyoshi, Kiyoshi Ishii, Yuji Ohnishi