Patents by Inventor Ryouhei Shigematsu

Ryouhei Shigematsu 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).

  • Actuator and object detecting apparatus that uses actuator using distance detection
    Patent number: 7060962
    Abstract: An actuator includes a blade spring of which one end is fixed to a fixed member and other end is fixed to a movable member. A driving unit moves the movable member. A position detector detects a distance to a flat portion of the blade spring, and a calculating unit calculates an amount of displacement of the movable member based on the distance detected by the position detector.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: June 13, 2006
    Assignee: NHK Spring Co., Ltd.
    Inventors: Jun Tominaga, Ryouhei Shigematsu, Atsuo Matsumoto
  • Actuator and object detecting apparatus that uses actuator
    Publication number: 20050157289
    Abstract: An actuator includes a blade spring of which one end is fixed to a fixed member and other end is fixed to a movable member. A driving unit moves the movable member. A position detector detects a distance to a flat portion of the blade spring, and a calculating unit calculates an amount of displacement of the movable member based on the distance detected by the position detector.
    Type: Application
    Filed: March 14, 2005
    Publication date: July 21, 2005
    Applicant: NHK SPRING CO., LTD.
    Inventors: Jun Tominaga, Ryouhei Shigematsu, Atsuo Matsumoto