Patents by Inventor Masaki Shinotsuka

Masaki Shinotsuka 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).

  • Player and spindle motor with skirt section having resin lead-in features
    Patent number: 8448199
    Abstract: A spindle motor includes a rotor made of metal including a substantially circular top surface section and a tubular skirt section arranged at a predetermined space from an outer periphery of the top surface section and a disk table of synthetic resin outsert-molded in the rotor and including a table main body section located on an outer surface side of the rotor and a rotor-inner-surface superimposing section located on an inner surface side of the rotor. First resin lead-in holes are provided in the tubular skirt section and an inner surface of the table main body section located on the outer surface side of the rotor is connected to the rotor-inner-surface superimposing section located on the inner surface side of the rotor through the first resin lead-in holes.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: May 21, 2013
    Assignee: Sony Corporation
    Inventors: Mikinori Matsuda, Kazuhito Kurita, Masaki Shinotsuka, Yudai Kato
  • Spindle motor and player
    Publication number: 20080222668
    Abstract: A spindle motor includes a rotor made of metal including a substantially circular top surface section and a tubular skirt section arranged at a predetermined space from an outer periphery of the top surface section and a disk table of synthetic resin outsert-molded in the rotor and including a table main body section located on an outer surface side of the rotor and a rotor-inner-surface superimposing section located on an inner surface side of the rotor. First resin lead-in holes are provided in the tubular skirt section and an inner surface of the table main body section located on the outer surface side of the rotor is connected to the rotor-inner-surface superimposing section located on the inner surface side of the rotor through the first resin lead-in holes.
    Type: Application
    Filed: November 20, 2007
    Publication date: September 11, 2008
    Applicant: Sony Corporation
    Inventors: Mikinori Matsuda, Kazuhito Kurita, Masaki Shinotsuka, Yudai Kato