Patents by Inventor Shuhei Souma

Shuhei Souma 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).

  • In-wheel motor
    Patent number: 8790204
    Abstract: There is provided an in-wheel motor that can reduce the loss of energy. An electric vehicle driving device includes a first motor, a second motor, a speed change mechanism, a speed reducing mechanism, and a clutch device. A first planetary gear mechanism of the speed change mechanism is a single-pinion type planetary gear device. A second planetary gear mechanism of the speed change mechanism is a double-pinion type planetary gear device. The electric vehicle driving device operates so as to switch a first speed change state where the magnitudes of rotational forces of the first motor and the second motor are equal to each other and the directions of the rotational forces are opposite to each other, and a second speed change state where the rotational forces have the same magnitude and direction.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: July 29, 2014
    Assignee: NSK Ltd.
    Inventors: Daisuke Gunji, Yasuyuki Matsuda, Shuhei Souma
  • IN-WHEEL MOTOR
    Publication number: 20130267365
    Abstract: There is provided an in-wheel motor that can reduce the loss of energy. An electric vehicle driving device includes a first motor, a second motor, a speed change mechanism, a speed reducing mechanism, and a clutch device. A first planetary gear mechanism of the speed change mechanism is a single-pinion type planetary gear device. A second planetary gear mechanism of the speed change mechanism is a double-pinion type planetary gear device. The electric vehicle driving device operates so as to switch a first speed change state where the magnitudes of rotational forces of the first motor and the second motor are equal to each other and the directions of the rotational forces are opposite to each other, and a second speed change state where the rotational forces have the same magnitude and direction.
    Type: Application
    Filed: July 27, 2012
    Publication date: October 10, 2013
    Applicant: NSK LTD.
    Inventors: Daisuke Gunji, Yasuyuki Matsuda, Shuhei Souma