Patents by Inventor Yasushi Mutou

Yasushi Mutou 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).

  • MACHINERY FACILITY CONDITION MONITORING METHOD AND SYSTEM AND ABNORMALITY DIAGNOSIS SYSTEM
    Publication number: 20070118333
    Abstract: An abnormality diagnosis system for diagnosing a presence or absence of an abnormality of a bearing unit for a railway vehicle axle, comprises a sensing/processing portion for outputting a signal generated from the bearing unit as an electric signal, a calculating/processing portion for making an abnormality diagnosis of the bearing unit based on an output of the sensing/processing portion, a result outputting portion for outputting a decision result of the calculating/processing portion, and a controlling/processing portion for feeding back a control signal to a control system of the railway vehicle based on the decision result.
    Type: Application
    Filed: December 27, 2006
    Publication date: May 24, 2007
    Applicant: NSK LTD.
    Inventors: Takanori Miyasaka, Hirotoshi Aramaki, Yasushi Mutou, Juntaro Sahara
  • Method and device for monitoring status of mechanical equipment and abnormality diagnosing device
    Patent number: 7184930
    Abstract: An abnormality diagnosis system for diagnosing a presence or absence of an abnormality of a bearing unit for a railway vehicle axle, comprises a sensing/processing portion for outputting a signal generated from the bearing unit as an electric signal, a calculating/processing portion for making an abnormality diagnosis of the bearing unit based on an output of the sensing/processing portion, a result outputting portion for outputting a decision result of the calculating/processing portion, and a controlling/processing portion for feeding back a control signal to a control system of the railway vehicle based on the decision result.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: February 27, 2007
    Assignee: NSK Ltd.
    Inventors: Takanori Miyasaka, Hirotoshi Aramaki, Yasushi Mutou, Juntaro Sahara
  • Method and device for monitoring status of mechanical equipment and abnormality diagnosing device
    Publication number: 20060167659
    Abstract: An abnormality diagnosis system for diagnosing a presence or absence of an abnormality of a bearing unit for a railway vehicle axle, comprises a sensing/processing portion for outputting a signal generated from the bearing unit as an electric signal, a calculating/processing portion for making an abnormality diagnosis of the bearing unit based on an output of the sensing/processing portion, a result outputting portion for outputting a decision result of the calculating/processing portion, and a controlling/processing portion for feeding back a control signal to a control system of the railway vehicle based on the decision result.
    Type: Application
    Filed: August 29, 2003
    Publication date: July 27, 2006
    Applicant: NSK LTD.
    Inventors: Takanori Miyasaka, Hirotoshi Aramaki, Yasushi Mutou, Juntaro Sahara
  • Cage for ball bearing
    Patent number: 6074099
    Abstract: A cage for ball bearing having pockets 7 the inner surface of which comprises a spherical surface portion 15 and a pair of cylindrical surface portions 16 on the opposite sides of the spherical surface portion 15 connected continuously to the opposite edges of the spherical surface portion 15, the spherical surface portion 15 having a radius of curvature slightly larger than the radius of curvature of the rolling contact surface of the balls to be held in the pockets 7, wherein the area of the spherical surface portion 15 in sliding contact with the rolling surface of the balls is decreased to smoothly supply the pockets 7 with lubricant to decrease the cage sound caused due to friction.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: June 13, 2000
    Assignee: NSK Ltd.
    Inventors: Yasushi Mutou, Kazuhiro Fujiu, Toshio Matsushima, Takashi Ogawa, Banda Noda