Patents by Inventor Kouji Nitadori

Kouji Nitadori 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).

  • Ultrasonic motor and electronic device having the ultrasonic motor
    Patent number: 6717330
    Abstract: A control portion always monitors a present-position signal from a position sensor and monitors whether the present position of a moving body is a desired position, or not (Step 101). In the case where the control portion detects that the present position of the moving body reaches the desired position, the control portion generates a stop command signal and gives the stop command signal to an oscillation drive circuit (S102). Then, the control portion checks whether overshooting occurs, or not (S103), and in the case where the control portion judges that overshooting occurs, the control portion retains a stop command signal as it is for a stop command retaining time t (S104). After the stop command retaining time t elapses, the control portion gives a reverse command signal to the oscillation drive circuit to conduct reverse operation (S105). After Step S105, the control is returned to Step S101 and the above operation is repeated.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: April 6, 2004
    Assignee: Seiko Instruments Inc.
    Inventors: Akihiro Iino, Kouji Nitadori, Masao Kasuga
  • Ultrasonic motor having single booster circuit and electronic device with ultrasonic motor
    Patent number: 6573636
    Abstract: Pluralities of electrode groups are formed on one face of a piezoelectric element, and a common electrode is formed on another face. The common electrode is connected to a booster circuit for boosting a voltage signal obtained from an amplifier circuit. The pluralities of electrode groups are connected to selection circuits for switching a signal path of a signal output from here.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: June 3, 2003
    Assignee: Seiko Instruments Inc.
    Inventors: Akihiro Iino, Kenji Suzuki, Kouji Nitadori
  • Ultrasonic motor and electronic device having the ultrasonic motor
    Publication number: 20030020368
    Abstract: A control portion always monitors a present-position signal from a position sensor and monitors whether the present position of a moving body is a desired position, or not (Step 101). In the case where the control portion detects that the present position of the moving body reaches the desired position, the control portion generates a stop command signal and gives the stop command signal to an oscillation drive circuit (S102). Then, the control portion checks whether overshooting occurs, or not (S103), and in the case where the control portion judges that overshooting occurs, the control portion retains a stop command signal as it is for a stop command retaining time t (S104). After the stop command retaining time t elapses, the control portion gives a reverse command signal to the oscillation drive circuit to conduct reverse operation (S105). After Step S105, the control is returned to Step S101 and the above operation is repeated.
    Type: Application
    Filed: July 2, 2002
    Publication date: January 30, 2003
    Inventors: Akihiro Iino, Kouji Nitadori, Masao Kasuga