Patents by Inventor Makoto Ohtuki

Makoto Ohtuki 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).

  • Shockproof and portable disk storage apparatus having shock absorbers on all sides of a head/disk enclosure and a coplanar electronic card
    Patent number: 5491608
    Abstract: A fixed disk storage unit is mounted in a protective outer case and is supported by elastic shock absorbers. A head/disk enclosure including a rotatable disk and a head actuator of the fixed disk storage unit therein, and an electronic card on which electronic circuits are mounted, are placed abreast with a gap there between on substantially the same plane in the protective outer case, and the head/disk enclosure is supported on all sides including the side next to the gap by the shock absorbers. This construction provides a shockproof and portable disk storage apparatus which is small-sized and whose manufacturing process is simple.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 13, 1996
    Assignee: International Business Machines Corporation
    Inventors: Ichiroh Koyanagi, Makoto Ohtuki, Fumitomo Ohsawa, Takayuki Satoh
  • Portable disk storage apparatus using flexible cable for shock absorption
    Patent number: 5402308
    Abstract: A fixed disk storage unit is mounted in a protective outer case, and is supported at one end by a flexible cable which connects a connector of the protective outer case with the fixed disk storage unit in the protective outer case, and supported at the other end by using elastic shock absorbers against the elasticity of the flexible cable. A head/disk enclosure including a rotatable disk and a head actuator of the fixed disk storage unit therein, and an electronic card on which electronic circuits are mounted, are placed abreast on substantially the same plane in the protective outer case, and the head/disk enclosure is supported by the shock absorbers. This construction provides a shockproof and portable disk storage apparatus which is small-sized and whose manufacturing process is simple.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: March 28, 1995
    Assignee: International Business Machines Corporation
    Inventors: Ichiroh Koyanagi, Makoto Ohtuki, Fumitomo Ohsawa, Takayuki Satoh