Patents by Inventor Hiroaki Ezure

Hiroaki Ezure 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).

  • Pressurization device for the rotor of a motor
    Patent number: 5856718
    Abstract: A cup shaped base 12 and a cap 13 are coupled, therein coil spring 14 is accommodated to form a holder 11, and the holder is interposed between the bearing 3 of a rotor shaft 4 and a sleeve 5. Different from being directly mounted on the rotor shaft, since the base 12 is provisionally held on the rotor shaft, the operation efficiency at the time of assembling the motor is outstandingly increased.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: January 5, 1999
    Assignee: Minebea Co., Ltd.
    Inventors: Kunitake Matsushita, Takayuki Yamawaki, Hiroshi Sano, Hiroaki Ezure