Patents by Inventor Fumiro Kaneda

Fumiro Kaneda 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).

  • Three blade type vertical windmill device
    Patent number: 7220107
    Abstract: The present invention relates to a windmill device rotating by a wind power. More particularly, to efficiently obtain rotating energy irrespective of a wind direction, the present invention is firstly characterized in that assuming that an outermost radius as a distance between the remotest position of each blade from the center of a vertical shaft and the vertical shaft is r1, an innermost radius as a distance between the nearest position of each blade to the vertical shaft and the vertical shaft is r2, and the angle (rad) of an arbitrary position r in an inner peripheral surface of the cross-section of the blade by regarding a line segment for connecting the remotest position from the vertical shaft to the vertical shaft as a reference is t (in this case, 0<=t<=2?/3), the form of the inner peripheral surface in the cross-section of each of the three blades satisfies a following formula: r=(r1?r2)×((t?2?/3)×2)/(2?/3)×2+r2.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: May 22, 2007
    Inventor: Fumiro Kaneda
  • Three-bladed vertical wind mill equipment
    Publication number: 20040265116
    Abstract: The present invention relates to a windmill device rotating by a wind power.
    Type: Application
    Filed: August 13, 2004
    Publication date: December 30, 2004
    Inventor: Fumiro Kaneda