Patents by Inventor Shuichi Otsuka

Shuichi Otsuka 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).

  • Blower
    Publication number: 20020009364
    Abstract: This invention is designed to reduce a harsh noise, by suppressing a wind noise generated at a wind-receiving end, which is caused by forming the wind-receiving end of an outlet port for air so as to be parallel to a side extending along the direction of the rotation axis of a vane of an impeller.
    Type: Application
    Filed: July 5, 2001
    Publication date: January 24, 2002
    Applicant: Minebea Co., Ltd.
    Inventor: Shuichi Otsuka
  • Axial flow fan motor with circuit board and housing interlocking structure
    Patent number: 6137197
    Abstract: An axial flow fan motor is provided with a motor housing that supports a bearing box. Bearings supported by the bearing box rotatably support a rotary shaft on which a yoke and an impeller are fixed. A U-letter shaped groove is provided on one portion of the motor housing, which is adapted to be engaged with a projection provided on an outer circumference on a PC board assembled with a control circuit. Since the PC board is securely positioned, the tip end of a probe of an automatic test machine can securely contact the terminal pin.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: October 24, 2000
    Assignee: Minebea Co., Ltd.
    Inventors: Noboru Taniguchi, Shuichi Otsuka
  • Axial flow fan motor
    Patent number: 6023113
    Abstract: An anti-electrostatic property between an impeller and a lead wire is improved particularly in a case of a miniature axial flow fan motor. In an axial flow fan motor, an impeller (6) integral with a motor yoke (12) is provided on a shaft (5) rotatably supported by bearings (2,3). An end face of the motor yoke (12) confronted with a PC board (8) mounting a drive circuit and its component parts thereon is covered by resin (P). Resin covering this portion suppresses the generation of the electrostatic current at this portion.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: February 8, 2000
    Assignee: Minebea Co., Ltd.
    Inventor: Shuichi Otsuka