Patents by Inventor Hirotaka TAMEKUNI

Hirotaka TAMEKUNI 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).

  • Motor and fan motor
    Patent number: 11002312
    Abstract: In an aerodynamic bearing, an outer peripheral surface of a shaft and an inner peripheral surface of a sleeve face each other in a radial direction. The sleeve includes a through hole penetrating the sleeve in the radial direction. A space on a radially inner side of the sleeve communicates with an external space of a motor through the through hole. A stationary portion includes a wall portion radially overlapping the through hole with a gap interposed therebetween on a radially outer side of the through hole.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: May 11, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Hiroshi Morishita, Kunio Sakurada, Hirotaka Tamekuni, Takeru Omura
  • Blower
    Patent number: 10920787
    Abstract: A blower includes an impeller that is rotatable about a central axis extending in a vertical direction, a motor that rotates the impeller, and a base portion on which the motor is mounted. The impeller includes a cup portion that covers the motor, and blades extending radially outward from the cup portion and arranged in a circumferential direction. A gap is provided between the cup portion and the base portion such that the gap becomes narrower in an outward direction with increasing distance from an interior of the cup portion.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: February 16, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Kunio Sakurada, Hiroshi Morishita, Akinobu Sumiji, Hirotaka Tamekuni
  • MOTOR AND FAN MOTOR
    Publication number: 20190285116
    Abstract: In an aerodynamic bearing, an outer peripheral surface of a shaft and an inner peripheral surface of a sleeve face each other in a radial direction. The sleeve includes a through hole penetrating the sleeve in the radial direction. A space on a radially inner side of the sleeve communicates with an external space of a motor through the through hole. A stationary portion includes a wall portion radially overlapping the through hole with a gap interposed therebetween on a radially outer side of the through hole.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 19, 2019
    Inventors: Hiroshi MORISHITA, Kunio SAKURADA, Hirotaka TAMEKUNI, Takeru OMURA
  • BLOWER
    Publication number: 20190195232
    Abstract: A blower includes an impeller that is rotatable about a central axis extending in a vertical direction, a motor that rotates the impeller, and a base portion on which the motor is mounted. The impeller includes a cup portion that covers the motor, and blades extending radially outward from the cup portion and arranged in a circumferential direction. A gap is provided between the cup portion and the base portion such that the gap becomes narrower in an outward direction with increasing distance from an interior of the cup portion.
    Type: Application
    Filed: October 11, 2018
    Publication date: June 27, 2019
    Inventors: Kunio SAKURADA, Hiroshi MORISHITA, Akinobu SUMIJI, Hirotaka TAMEKUNI