Patents by Inventor Yuji Hiraiwa

Yuji Hiraiwa 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).

  • Displacement detecting device
    Patent number: 6586951
    Abstract: A displacement detecting device includes a power supply line made of a conductor on a substrate, an earth line made of a conductor on the substrate, a plurality of output lines made of a conductor on the substrate, a resistance formed between the power supply line and the earth line on the substrate, and a brush sliding on the resistance and at least one of the output lines electrically connecting between the resistance and at least one of the output lines, the displacement detecting device generating the output signal from the output lines based on the position of the brush, wherein one of the power supply line and the earth line is disposed between the output lines.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: July 1, 2003
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yuji Hiraiwa, Keiji Yasuda, Kouji Akashi
  • Displacement detecting device
    Publication number: 20020070735
    Abstract: A displacement detecting device includes a power supply line made of a conductor on a substrate, an earth line made of a conductor on the substrate, a plurality of output lines made of a conductor on the substrate, a resistance formed between the power supply line and the earth line on the substrate, and a brush sliding on the resistance and at least one of the output lines electrically connecting between the resistance and at least one of the output lines, the displacement detecting device generating the output signal from the output lines based on the position of the brush, wherein one of the power supply line and the earth line is disposed between the output lines
    Type: Application
    Filed: November 19, 2001
    Publication date: June 13, 2002
    Inventors: Yuji Hiraiwa, Keiji Yasuda, Kouji Akashi
  • Rotation speed sensor
    Patent number: 6101879
    Abstract: In the present invention, a detection coil and a cancellation coil are closely provided and electrically connected in series to cancel induction noise. The cancellation coil may be disposed at a position not to sense the rotation. An axis of the cancellation coil may be provided in parallel to an axis of the detection coil. The numbers of turns for the cancellation coil may be the same as those for the detection coils. The cancellation coil may be disposed coaxial to the detection coils.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: August 15, 2000
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Katsuyoshi Shirai, Satohiko Nakano, Yuji Hiraiwa