Patents by Inventor Masayoshi Amasaka

Masayoshi Amasaka 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: 6587311
    Abstract: A magnetic storage device having a ramped-loading-type head suspension, in which a magnetic head slider mounted on a support beam can fly above a storage medium in stable state in the loading or unloading operation, is disclosed. The head suspension includes a support beam having a distal end and a proximal end, a gimbal pivotally coupled to the distal end portion of the support beam through a pivotal portion and a loading member connected to a free end of the gimbal positioned to the side nearer to the proximal end of the support beam. The provision of the loading member at the free end of the gimbal permits the flow-in end of a magnetic head slider mounted on the gimbal to be kept farther away from the surface of the storage medium than the flow-out end thereof, thereby eliminating an unstable flying state of the magnetic head slider.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: July 1, 2003
    Assignee: Fujitsu Limited
    Inventors: Masaaki Niijima, Masayoshi Amasaka
  • Patent number: 4120010
    Abstract: At the start of operation, a floating magnetic head is brought into contact with the surface of a magnetic disk and the magnetic disk is then rotated to float the magnetic head off the magnetic disk surface. At the end of operation, the floating magnetic head is drawn away from the magnetic disk surface of the rotating magnetic disk and, after the lapse of a certain period of time, the magnetic disk is stopped. This prevents the floating magnetic head from sticking to the magnetic disk owing to dew condensation, permits easy miniaturization of the floating space and provides for increased recording density.
    Type: Grant
    Filed: May 25, 1977
    Date of Patent: October 10, 1978
    Assignees: Nippon Telegraph and Telephone Public Corp., Hitachi, Ltd., Fujitsu Limited
    Inventors: Yasunaga Mitsuya, Shigemitsu Oguchi, Wataru Hayakawa, Hatsuo Takahashi, Gen-ichi Ishida, Masayoshi Amasaka