Patents by Inventor Tsutomu Gotou

Tsutomu Gotou 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).

  • Multi-piece hub for supporting recording disks in a hard disk drive
    Patent number: 5715114
    Abstract: A disk assembly includes a disk as a recording medium having a center hole whose center hole defines an inner cylindrical surface. The disk is provided with a first mating portion such as a chamfered end at the inner cylindrical surface, and a hub structure to be connected with the inner cylindrical surface of the recording medium. The hub structure has a plurality of divided hub members inside the center hole, the hub member being formed by dividing the hub structure fanwise by a predetermined angular pitch. The hub members are provided with a second mating portion, typically a groove, at a location opposed to the first mating portion, wherein the hub members support the disk by fitting the second mating portion into the first mating portion.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: February 3, 1998
    Assignee: Fujitsu Limited
    Inventor: Tsutomu Gotou