Patents by Inventor Junetsu Hayashi

Junetsu Hayashi 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).

  • Permanent magnet 2-phase DC brushless motor
    Patent number: 6465973
    Abstract: Several embodiments of improved 2-phase DC brushless motors. In each embodiment, there are pluralities of windings and the current flow through the windings is controlled by a reduced number of main switches from the prior art type of devices. In accordance with a feature of certain embodiments, pair of windings are provided with a common CT that detects the current flowing through the connected pair of windings and which functions to control the main switching device in a pulse width modulated manner. As a result, the control circuit can be simplified and reduced in cost without sacrificing performance.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: October 15, 2002
    Assignee: Kabushiki Kaisha Moric
    Inventors: Takashi Kato, Tadashi Takano, Junetsu Hayashi