Patents by Inventor Shigeo KUMAOU

Shigeo KUMAOU 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).

  • Impeller of centrifugal fan and method and apparatus for manufacturing the same
    Patent number: 10697474
    Abstract: An impeller of a centrifugal fan includes multiple blades arranged annularly around a rotational axis, a main plate, a shroud, main plate-side welded portions between main plate-side blade axial ends of the blades and the main plate, and shroud-side welded portions between shroud-side blade axial ends of the blades and the shroud. The main plate is arranged opposite to main plate-side blade axial ends. The shroud is arranged opposite to shroud-side blade axial ends. The main plate-side welded portions have main plate-side welding holes that are recesses extending through the main plate to portions of the main plate-side blade axial ends. The shroud-side welded portions have shroud-side welding holes that are recesses extending through the shroud to portions of the shroud-side blade axial ends.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: June 30, 2020
    Assignee: Daikin Industries, Ltd.
    Inventor: Shigeo Kumaou
  • IMPELLER OF CENTRIFUGAL FAN AND METHOD AND APPARATUS FOR MANUFACTURING THE SAME
    Publication number: 20190010961
    Abstract: An impeller of a centrifugal fan includes multiple blades arranged annularly around a rotational axis, a main plate, a shroud, main plate-side welded portions between main plate-side blade axial ends of the blades and the main plate, and shroud-side welded portions between shroud-side blade axial ends of the blades and the shroud. The main plate is arranged opposite to main plate-side blade axial ends. The shroud is arranged opposite to shroud-side blade axial ends. The main plate-side welded portions have main plate-side welding holes that are recesses extending through the main plate to portions of the main plate-side blade axial ends. The shroud-side welded portions have shroud-side welding holes that are recesses extending through the shroud to portions of the shroud-side blade axial ends.
    Type: Application
    Filed: August 10, 2016
    Publication date: January 10, 2019
    Inventor: Shigeo KUMAOU