Patents by Inventor Masahiko Hoshina

Masahiko Hoshina 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).

  • Spherical ultrasound motor and control method for a spherical ultrasound motor
    Patent number: 8841868
    Abstract: A substantially spherical rotor can be controlled with accuracy even in a relatively low speed rotation. In controlling rotational motions of a rotor 3 of a spherical ultrasonic motor 1, phases of voltages to be applied to three stators 9a, 9b, 9c are determined to set the direction of a rotation axis of the rotor 3. Frequencies of voltages to be applied to the three stators 9a, 9b, 9c are adjusted to control the rotation speed of the rotor 3. Thereby, control with high accuracy is enabled in a relatively low speed rotation.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: September 23, 2014
    Assignee: National University Corporation Tokyo University of Agriculture and Technology
    Inventors: Shigeki Toyama, Masahiko Hoshina
  • SPHERICAL ULTRASOUND MOTOR AND CONTROL METHOD FOR A SPHERICAL ULTRASOUND MOTOR
    Publication number: 20120119684
    Abstract: A substantially spherical rotor can be controlled with accuracy even in a relatively low speed rotation. In controlling rotational motions of a rotor 3 of a spherical ultrasonic motor 1, phases of voltages to be applied to three stators 9a, 9b, 9c are determined to set the direction of a rotation axis of the rotor 3. Frequencies of voltages to be applied to the three stators 9a, 9b, 9c are adjusted to control the rotation speed of the rotor 3. Thereby, control with high accuracy is enabled in a relatively low speed rotation.
    Type: Application
    Filed: March 10, 2010
    Publication date: May 17, 2012
    Applicant: National University Corporation Tokyo University of Agruculture and Technology
    Inventors: Shigeki Toyama, Masahiko Hoshina