Patents by Inventor Hiroki Masuyama

Hiroki Masuyama 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).

  • Patent number: 10720811
    Abstract: An electric motor for vehicle including a stator; a stator support member; a rotation shaft; a rotor including a bottom wall and a peripheral wall, in which the peripheral wall is provided with a magnet and the bottom wall is configured to be combined with the rotation shaft; and a bearing holder including a tube part, and a water drip hole is formed on a vertically lower side of the tube part, the stator support member being provided with a bearing holder insertion part including a boss part into which the tube part is configured to be inserted, wherein a water drain structure configured to drain a water drop from the water drip hole is provided along a circumferential direction of an inner circumferential surface of the boss part in a vertically lower area of the inner circumferential surface of the boss part.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: July 21, 2020
    Assignee: Mitsuba Corporation
    Inventors: Keiichi Hosoi, Shuichi Tsujiyama, Mikio Kawamura, Shingo Watanabe, Hiroki Masuyama, Takeshi Tonegawa, Minoru Ota
  • Publication number: 20180019635
    Abstract: An electric motor for vehicle including a stator; a stator support member; a rotation shaft; a rotor including a bottom wall and a peripheral wall, in which the peripheral wall is provided with a magnet and the bottom wall is configured to be combined with the rotation shaft; and a bearing holder including a tube part, and a water drip hole is formed on a vertically lower side of the tube part, the stator support member being provided with a bearing holder insertion part including a boss part into which the tube part is configured to be inserted, wherein a water drain structure configured to drain a water drop from the water drip hole is provided along a circumferential direction of an inner circumferential surface of the boss part in a vertically lower area of the inner circumferential surface of the boss part.
    Type: Application
    Filed: May 27, 2016
    Publication date: January 18, 2018
    Inventors: Keiichi Hosoi, Shuichi Tsujiyama, Mikio Kawamura, Shingo Watanabe, Hiroki Masuyama, Takeshi Tonegawa, Minoru Ota
  • Patent number: 9249788
    Abstract: This electric fan has a rotation shaft that is provided rotatably with respect to a stator, a rotor yoke provided on the rotation shaft and formed in a bottomed cylindrical shape so as to cover the stator from a front surface, and a bracket that fixes the stator to a fan shroud and is formed so as to cover a rear surface of the stator, with a fan body provided so as to integrally rotate with the rotation shaft and the rotor yoke. The fan body has a fan boss formed in a bottomed cylindrical shape so as to cover the rotor yoke from a front surface, and a plurality of blades that is provided protruding radially from an outer circumferential surface of the fan boss. A first labyrinth portion is provided between an opening portion of the fan boss and the fan shroud.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: February 2, 2016
    Assignee: Mitsuba Corporation
    Inventors: Hiroshi Kimura, Hiroki Masuyama, Keiichi Hosoi, Shinya Saito
  • Publication number: 20130287605
    Abstract: This electric fan has a rotation shaft that is provided rotatably with respect to a stator, a rotor yoke provided on the rotation shaft and formed in a bottomed cylindrical shape so as to cover the stator from a front surface, and a bracket that fixes the stator to a fan shroud and is formed so as to cover a rear surface of the stator, with a fan body provided so as to integrally rotate with the rotation shaft and the rotor yoke. The fan body has a fan boss formed in a bottomed cylindrical shape so as to cover the rotor yoke from a front surface, and a plurality of blades that is provided protruding radially from an outer circumferential surface of the fan boss. A first labyrinth portion is provided between an opening portion of the fan boss and the fan shroud.
    Type: Application
    Filed: January 10, 2012
    Publication date: October 31, 2013
    Applicant: MITSUBA CORPORATION
    Inventors: Hiroshi Kimura, Hiroki Masuyama, Keiichi Hosoi, Shinya Saito