Patents by Inventor Satoshi SHIMUZU

Satoshi SHIMUZU 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: 10895284
    Abstract: A bearing unit includes: an impregnated bearing that rotatably supports a shaft of a rotor; a storage part which is formed in a manner that an end surface of a housing incorporating the rotor in an axial direction becomes convex toward an outer side and which stores the impregnated bearing in a non-rotatable manner; and an oil return washer which is placed to face an end surface of the impregnated bearing stored in the storage part and which integrally rotates with the shaft. The storage part has a bottom tubular shape, and includes an inner surface and a bottom surface, and the oil return washer is placed in a manner that the facing surface overlaps with the inner surface of the storage part when viewed from a radial direction, and includes a circulation part that receives oil leaked from the impregnated bearing and returns the oil to the impregnated bearing.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: January 19, 2021
    Assignee: MABUCHI MOTOR CO., LTD.
    Inventors: Shinya Iio, Yoshinobu Katsuta, Satoshi Shimuzu
  • Publication number: 20200102983
    Abstract: A bearing unit includes: an impregnated bearing that rotatably supports a shaft of a rotor; a storage part which is formed in a manner that an end surface of a housing incorporating the rotor in an axial direction becomes convex toward an outer side and which stores the impregnated bearing in a non-rotatable manner; and an oil return washer which is placed to face an end surface of the impregnated bearing stored in the storage part and which integrally rotates with the shaft. The storage part has a bottom tubular shape, and includes an inner surface and a bottom surface, and the oil return washer is placed in a manner that the facing surface overlaps with the inner surface of the storage part when viewed from a radial direction, and includes a circulation part that receives oil leaked from the impregnated bearing and returns the oil to the impregnated bearing.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 2, 2020
    Inventors: Shinya IIO, Yoshinobu KATSUTA, Satoshi SHIMUZU