Patents by Inventor Ryohei Otaka

Ryohei Otaka 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).

  • Brushless motor with a stator comprising a bobbin and a conductor wire wound on the bobbin by being overlapped in plural layers
    Patent number: 10903708
    Abstract: A stator of a brushless motor may include a core; a bobbin including a pair of side surfaces, an inner wall, and an outer wall; a conductor wire wound by being overlapped in plural layers; and a resin layer covering the bobbin and the conductor wire. A profile of the conductor wire may become larger towards an outer circumferential side of the stator. Among portions of the conductor wire arranged along a rotary axis direction of a rotor on at least one side surface included in the pair of side surfaces and located on an innermost circumferential side of the stator in the respective plural layers, a portion of the conductor wire exposed to the resin layer and separated from the inner wall and the outer wall may be tilted from an inner circumferential side of the stator toward the outer circumferential side of the stator.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: January 26, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Yoshihiko Honda, Akira Hamajima, Ryohei Otaka
  • BRUSHLESS MOTOR
    Publication number: 20190027992
    Abstract: A stator of a brushless motor may include a core; a bobbin including a pair of side surfaces, an inner wall, and an outer wall; a conductor wire wound by being overlapped in plural layers; and a resin layer covering the bobbin and the conductor wire. A profile of the conductor wire may become larger towards an outer circumferential side of the stator. Among portions of the conductor wire arranged along a rotary axis direction of a rotor on at least one side surface included in the pair of side surfaces and located on an innermost circumferential side of the stator in the respective plural layers, a portion of the conductor wire exposed to the resin layer and separated from the inner wall and the outer wall may be tilted from an inner circumferential side of the stator toward the outer circumferential side of the stator.
    Type: Application
    Filed: July 3, 2018
    Publication date: January 24, 2019
    Inventors: Yoshihiko Honda, Akira Hamajima, Ryohei Otaka