Patents by Inventor Norihiko Satou

Norihiko Satou 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).

  • Generator motor cooling structure and generator motor
    Patent number: 8907534
    Abstract: A generator motor cooling structure for cooling a generator motor, which includes a housing storing an input/output shaft to which a rotor is attached and a stator disposed at an outer periphery portion of the rotor, by a cooling medium, includes: a protrusion portion that protrudes toward a coil of the stator from an inner surface of the housing of one end side in a direction of a central rotation axis of the input/output shaft to form a passage of the cooling medium between the coil and the protrusion portion, and is disposed around the central rotation axis.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: December 9, 2014
    Assignee: Komatsu Ltd.
    Inventors: Norihiko Satou, Yukihiko Sugimoto
  • Generator motor cooling structure and generator motor
    Patent number: 8836180
    Abstract: A generator motor cooling structure for cooling a generator motor, which includes a housing storing an input/output shaft to which a rotor is attached and a stator disposed at an outer periphery portion of the rotor, by a cooling medium, includes: a protrusion portion that protrudes toward the rotor from a surface at a side of the housing of an end side member disposed at one end portion of the housing in a direction of a central rotation axis of the input/output shaft, wherein the protrusion portion is provided on an inner side of a coil of the stator in a radial direction, on an outer side of a bearing attached to the input/output shaft in the radial direction, in at least a partial region on a periphery of the central rotation axis.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: September 16, 2014
    Assignee: Komatsu Ltd.
    Inventors: Norihiko Satou, Yukihiko Sugimoto
  • GENERATOR MOTOR COOLING STRUCTURE AND GENERATOR MOTOR
    Publication number: 20140015354
    Abstract: A generator motor cooling structure for cooling a generator motor, which includes a housing storing an input/output shaft to which a rotor is attached and a stator disposed at an outer periphery portion of the rotor, by a cooling medium, includes: a protrusion portion that protrudes toward a coil of the stator from an inner surface of the housing of one end side in a direction of a central rotation axis of the input/output shaft to form a passage of the cooling medium between the coil and the protrusion portion, and is disposed around the central rotation axis.
    Type: Application
    Filed: March 26, 2012
    Publication date: January 16, 2014
    Applicant: KOMATSU LTD.
    Inventors: Norihiko Satou, Yukihiko Sugimoto
  • GENERATOR MOTOR COOLING STRUCTURE AND GENERATOR MOTOR
    Publication number: 20130154408
    Abstract: A generator motor cooling structure for cooling a generator motor, which includes a housing storing an input/output shaft to which a rotor is attached and a stator disposed at an outer periphery portion of the rotor, by a cooling medium, includes: a protrusion portion that protrudes toward the rotor from a surface at a side of the housing of an end side member disposed at one end portion of the housing in a direction of a central rotation axis of the input/output shaft, wherein the protrusion portion is provided on an inner side of a coil of the stator in a radial direction, on an outer side of a bearing attached to the input/output shaft in the radial direction, in at least a partial region on a periphery of the central rotation axis.
    Type: Application
    Filed: March 26, 2012
    Publication date: June 20, 2013
    Applicant: KOMATSU LTD.
    Inventors: Norihiko Satou, Yukihiko Sugimoto