Patents by Inventor Ryoma Endou

Ryoma Endou 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).

  • Device for measuring rotation accuracy and dynamic torque for radial rolling bearing
    Patent number: 6378382
    Abstract: A device is provided for measuring non-repetitive run-out and dynamic torque simultaneously for a radial rolling bearing, comprising a holder for holding one of the outer and inner races, a pushing member for pushing the holder in an axial direction without confining the holder in both of the radial and rotational directions, a drive shaft for rotatingly driving the other of the outer and inner races, a precision bearing device for rotatingly supporting the drive shaft, a displacement sensor for measuring radial displacement of the one of the outer and inner races, a wire having one end connected to a portion which rotates together with the one of the outer and inner races, and a torque sensor connected to the other end of the wire to measure dynamic torque applied to the one of the outer and inner races.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: April 30, 2002
    Assignee: NSK Ltd.
    Inventors: Shoji Noguchi, Ryoma Endou