Patents by Inventor Takafumi Koshida

Takafumi Koshida 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).

  • Drive unit and manufacturing method thereof
    Publication number: 20090237018
    Abstract: A drive unit includes a rotating electrical machine; a rotation sensor that detects a rotational position of a rotor of the rotating electrical machine, and a storage medium. In an inspecting step of measuring a counter electromotive force by mechanically driving the rotating electrical machine after the rotating electrical machine and the rotation sensor are assembled together, positional error information of the rotation sensor obtained based on information of the counter electromotive force and output information from the rotation sensor is stored in the storage medium. The storage medium is integrally provided to the drive unit in such a state that the storage medium is readable upon assembling a control device that controls the rotating electrical machine.
    Type: Application
    Filed: December 30, 2008
    Publication date: September 24, 2009
    Applicant: AISIN AW CO., LTD.
    Inventors: Yoshinari Nakagawa, Tomoo Atarashi, Takafumi Koshida