Patents by Inventor Tomomitsu Kamiya

Tomomitsu Kamiya 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).

  • Magnetic sensor unit less responsive to leaking magnetic flux
    Patent number: 7019516
    Abstract: A magnetic sensor unit includes an actuator motor and a magnetic position sensor. The actuator motor has a magnetic circuit including motor magnets. The magnetic position sensor includes a sensor magnet and a hall element for detecting magnetic flux. Magnet clearances are formed between the motor magnets. The hall element is disposed outside of the motor to detect the magnetic flux in a direction penetrating through the magnet clearances, and which is perpendicular to a direction from one of the motor magnets to the other. In this disposition of the hall element, it is restricted that the hall element detects leaking magnetic flux from the motor magnets.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: March 28, 2006
    Assignees: Nippon Soken, Inc., Denso Corporation
    Inventors: Masao Tokunaga, Kenji Takeda, Tomomitsu Kamiya
  • Magnetic sensor unit less responsive to leaking magnetic flux
    Publication number: 20040000902
    Abstract: A magnetic sensor unit includes an actuator motor and a magnetic position sensor. The actuator motor has a magnetic circuit including motor magnets. The magnetic position sensor includes a sensor magnet and a hall element for detecting magnetic flux. Magnet clearances are formed between the motor magnets. The hall element is disposed outside of the motor to detect the magnetic flux in a direction penetrating through the magnet clearances, and which is perpendicular to a direction from one of the motor magnets to the other. In this disposition of the hall element, it is restricted that the hall element detects leaking magnetic flux from the motor magnets.
    Type: Application
    Filed: June 11, 2003
    Publication date: January 1, 2004
    Inventors: Masao Tokunaga, Kenji Takeda, Tomomitsu Kamiya