Patents by Inventor Nobuyuki Kuji

Nobuyuki Kuji 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).

  • Patent number: 4672249
    Abstract: A submersible electric motor for use in submersible pump or the like, in which an upright motor shaft is supported by upper and lower thrust bearings for supporting upward and downward thrust loads, respectively, and thrust pads of the upper and the lower thrust bearings receive upper and lower slide contact members secured to the motor shaft in its upper and lower portions, and in which resilient means such as coil springs or rubber bushings bias the thrust pads of the upper thrust bearing, suspension mounted to the motor frame, towards the upper thrust contact member secured to the motor shaft. This thrust bearing for supporting an upward thrust given to the motor shaft may be applicable to various electric motors.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: June 9, 1987
    Assignee: Ebara Corporation
    Inventors: Minoru Iwata, Nobuyuki Kuji