Patents by Inventor Genzou Naitou

Genzou Naitou 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).

  • Motor controller detecting abnormality of power transmission unit between main spindle and motor
    Patent number: 10018677
    Abstract: A motor controller includes a single-rotation signal detector detecting a single-rotation signal that indicates a single rotation of a main spindle, a rotation angle detector detecting a rotation angle of a motor every predetermined time, and a counter adding up the rotation angle. A value of the counter is reset when the single-rotation signal detector detects the single-rotation signal of the main spindle. The motor controller further includes a judgment unit judging that a power transmission unit has abnormality when a value of the rotation angle of the motor added up in the counter deviates from a predetermined range.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: July 10, 2018
    Assignee: FANUC CORPORATION
    Inventor: Genzou Naitou
  • MOTOR CONTROLLER DETECTING ABNORMALITY OF POWER TRANSMISSION UNIT BETWEEN MAIN SPINDLE AND MOTOR
    Publication number: 20150115855
    Abstract: A motor controller includes a single-rotation signal detector detecting a single-rotation signal that indicates a single rotation of a main spindle, a rotation angle detector detecting a rotation angle of a motor every predetermined time, and a counter adding up the rotation angle. A value of the counter is reset when the single-rotation signal detector detects the single-rotation signal of the main spindle. The motor controller further includes a judgment unit judging that a power transmission unit has abnormality when a value of the rotation angle of the motor added up in the counter deviates from a predetermined range.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventor: Genzou Naitou